SECTION ELECTRICAL INDEX. Electrical System Protection Device Study

Transcription

1 SECTION TITLE SECTION ELECTRICAL INDEX Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Section Summary of Electrical Work Supplementary Electrical Conditions Wiring Methods Exterior Wiring Methods Interior Electrical System Protection Device Study Raceways Wire and Cable 600 Volt Splices and Terminations Metal Clad Cable Junction and Pullboxes Outlet Boxes Wiring Devices Mounting Height of Outlets Panelboards Panel Cabinets and Trim Disconnect Switches Service Entrance Main Service Serviceboard Circuit Breakers and Fusible Switches Grounding Lighting Fixtures and Lamps Transient Voltage Surge Suppression Fire Alarm System Card Access System Apartment Doorbell Sytem Electric Equipment and Motors RAY Engineering Copyright 2010 Electrical Index 16000

2 SECTION SUMMARY OF ELECTRICAL WORK PART 1 - GENERAL 1.1 WORK INCLUDED A. Refer to the General Conditions and Division 1, which form a part of this Contract and have the same force and effect as if printed herein in full. B. Any reference in the Electrical Division to "this Contractor," is intended as indication of the work to be furnished and installed by the Electrical Contractor. Where work is indicated on the electrical drawings or specified in the electrical division without reference or mention as to the Contractor, it is understood such work is to be provided by the Electrical Contractor. C. Wherever the word "provide" appears in these specifications or on the accompanying drawings, it means "furnish and install, with all associated wiring, raceway, supports and appurtenances, final connections and place same in proper electrical operating condition." Where equipment is listed but the words "provide" or "furnish and install" are not mentioned, it is understood that such material and/or work is the responsibility of this Contractor. D. Wherever the word "equipment" appears in these specifications or on the accompanying drawings, it means "all wiring, raceways, fixtures, supports, panels, boxes, switches, devices and appurtenances." Where the word "work" appears in these specifications or on the accompanying drawings, it means "to include all equipment, all labor, rigging, scaffolding, tools and appurtenances of an auxiliary nature." PART 2 - PRODUCTS 2.1 PERFORMANCE A. Perform the work under Division 16 in accordance with the Contract Documents. The work includes the furnishing and installing of all materials, equipment, appurtenances, and other necessary work required for proper completion, operation and use of the electrical facilities and includes the furnishing of all tools, equipment, labor, transportation, supervision and other such items incidental to the execution of the work, all as intended or reasonably implied by the Contract Documents. PART 3 - EXECUTION 3.1 SCOPE OF WORK A. Without limiting or restricting the volume of work and solely for the convenience of this Contractor, the work to be performed is, in general, to be comprised of the following: 1. Electrical Service Facilities from Utility System to the Building. 2. Electrical Service Equipment. 3. Electrical Distribution System for Power and Lighting. 4. Grounding System. 5. Branch Circuit System including protection and wiring, for lighting, devices and other electrical utilization equipment. Summary of Electrical Work

3 6. Wiring Devices, Disconnect Switches and Lighting Fixtures complete with Lamps. 7. Power Wiring for Motors and other electrical utilization equipment. 8. Temporary Light and Power for all trades. 9. Exterior Lighting System. 10. Emergency Lighting System. 11. Telephone/Data Service Facilities from utility system to building. 12. TV Cable Service Facilities from utility system to building. 13. Complete Fire Alarm System 14. Access Control System 15. Lightning Protection System 16. Emergency Call System 17. Security System 18. Nurse Call System 19. Obtain and pay for all permits and inspections required by any and all Lawful Authorities. 20. Panel directories, identification nameplates, operation and maintenance instructions, record drawings, and cleaning premises of debris resulting from this Contractor's work. 3.2 WORK NOT INCLUDED IN THIS DIVISION A. In general, all special control equipment required for the Heating and Ventilating System, Plumbing System, and Air Conditioning System will be furnished under the respective Division. Loose motor starters, thermal switches, etc., provided by Mechanical Contractor will be delivered to this Contractor for storage and installation. B. All control wiring for the Heating and Ventilating System and Air Conditioning System will be furnished and installed under the respective Division. END OF SECTION Summary of Electrical Work

4 SECTION SUPPLEMENTARY ELECTRICAL CONDITIONS PART 1- GENERAL 1.1 EXAMINATION OF CONTRACT DOCUMENTS A. Carefully examine the General, Mechanical and Electrical drawings. If any discrepancies occur between the drawings and the Specifications, report such discrepancies to the Architect in writing and obtain written instructions as to the manner in which to proceed. No departures from the Contract Drawings shall be made without prior written approval of the Architect. B. Any discrepancies shall be reported at least 15-days prior to submission of bid. In the event that such discrepancies are not reported in this manner, the Contractor shall accept the Architect's interpretation and/or clarification. 1.2 STANDARDS OF MATERIAL AND WORKMANSHIP A. All work shall be executed by person skilled in the work to which they are assigned. All materials and equipment furnished for the project shall be new and of first quality, produced by manufacturers who have been regularly engaged in the manufacturer of these products for a period of not less than five years. B. Where there is more than one item of similar equipment required under this Contract, all such similar equipment shall be the product of one manufacturer. C. All materials furnished under this Contract shall be determined safe by a nationally recognized testing laboratory, such as Underwriters' Laboratories, Inc., or Factory Mutual Engineering Corporation. All material shall be labeled, certified or listed by such laboratory. 1.3 STANDARDS, SPECIFICATIONS AND CODES A. Where Electrical Standards, Federal Specifications, and Electrical Codes are referred to herein, it shall be understood that such reference is to the issue in effect at the date of the proposal, including all revisions and addends, if any. 1.4 LAWS, REGULATIONS, PERMITS AND CERTIFICATES A. Procure all necessary permits, paying all associated charges, and furnish the Architect with evidence of the permits before commencing the Contract Work. Furnish to the Owner, two copies of the final electrical inspection certificate from The Middle Department. Notify the inspection agency in sufficient time prior to concealment of work so that a complete rough-in inspection may be made. The material, equipment and installation shall conform to all applicable regulations and codes. A partial list being as follows: 1. The Occupational Health and Safety Act of The National Electrical Code, NFPA The National Fire Protection Association. 4. Life Safety Code, NFPA IBC, International Building Code, The National Electrical Safety Code. 7. Service Installation Rules and all rulings of the local power and telephone companies. Supplementary Electrical Conditions

5 8. American National Standards Institute. 9. Institute of Electrical and Electronic Engineers. 10. Standards of the National Electric Manufacturers Association. 11. All health and safety regulations or codes which pertain to the installation of equipment furnished under this Contract or the subsequent use of the equipment by the Owner. B. Nothing contained in these Specifications or shown on the drawings shall be so construed as to conflict with any national, state, municipal or local laws or regulations governing the installation of work specified herein, and all such acts, ordinances and regulations, including the National Electrical Code, are hereby incorporated and made a part of these Specifications. All such requirements shall be satisfied by this Contractor and at no additional expense to the Owner. PART 2 - PRODUCTS 2.1 ATTACHMENTS AND SUPPORTS A. Provide adequate support for all installed equipment. Methods of support shall be subject to approval. B. All fastenings, supports, hangers, clamps and anchors shall be of the type made for the specific purpose for which they are to be used. Provide toggle bolts or machine bolt fastenings for hollow tile, terra-cotta or lath construction. Use machine screws for structural steel fastening, lead expansion shields and machine screws for solid masonry fastening, and lag screws or bolts for wood fastening. Install all conduit rigidly and firmly to prevent swaying, vibration or sagging, using malleable or wrought steel hangers of standard design, pipe clamps, or fabricated steel supports of approved design. Hangers for horizontal conduit runs shall be adjustable clevis type. Perforated strap iron hangers are not permitted. C. Fastenings and attachments such as screws, bolts and nuts shall be made with nonferrous metals, galvanized or cadmium plated steel. All fastenings and attachments shall be made with such materials or so protected that they will offer the maximum protection against deterioration from age, weather and dampness. D. All exterior fastening devices shall be Series 300 stainless steel. E. Lighting fixture supports shall not be dependent on the work of others, such as ceiling grid system, duct work, etc., for their support. Supply all auxiliary steel rods, hangers, and miscellaneous hardware that may be required to provide independent support of the lighting fixtures from the basic building structure. Unless specifically indicated, chain hanging will not be permitted. 2.2 ACCESS DOORS A. The Contractor shall inform himself fully regarding peculiarities and limitations of space available for the installation of all materials and equipment under the electrical scope of work. B. Arrange all equipment and apparatus which may have to be reached from time to time for operation or maintenance so that they are readily accessible. C. Any items of equipment which at some time may require operation or maintenance and is located behind plaster, masonry, or other such construction shall be made accessible by access doors. Supplementary Electrical Conditions

6 D. Provide access doors that are not smaller than 12-inches by 16-inches, of all steel construction, with a No. 16 gauge wall or ceiling frame and No. 14 gauge panel door and with 1/8-inch asbestos secured to the inside of the door. Access doors shall contain concealed hinges, and outside of doors shall be flush with finished surface. 2.3 SLEEVES AND WATERPROOF CONDUIT SEALS A. Furnish and install sleeves where required to protect equipment or facilities in the installation. Extend each sleeve through its respective floor, wall or partition. Cut each wall or partition sleeve flush with each surface. Extend each floor sleeve one inch above the finished floor. Properly install and firmly secure all sleeves in place. B. For sleeves in bearing walls, masonry walls, floors and partitions, provide standard weight steel pipe finished with smooth edges. For other than masonry partitions through suspended ceilings and for concealed vertical piping, provide No. 22 U.S.G. galvanized iron. Sleeves through exterior walls below grade and through waterproofed floors and walls shall have integral water stops. C. Waterproof all electrical penetrations occurring below grade through exterior walls and through waterproofed floors or walls. Seal each conduit or cable to the interior of the sleeves with O.Z. Type FSK seals, Thunderline Corporation Link Seals or approved equal. 2.4 SLEEVES AND CONDUIT FIRE SEALS A. Firestop openings around electrical penetrations in fire resistant rated walls, partitions, floors or ceilings. B. Furnish and install sleeves and seal each conduit or cable as required to prevent the spread of fire or the products of combustion at all locations designated in Article of the National Electrical Code. Seals shall consist of both conduit and cable Fire Stops as manufactured by O.Z., or approved equal. Irregular openings shall be sealed with a silicone foam sealant approved as a fire stop as manufactured by Dow Corning or approved equal. 2.5 SOURCE OF SUPPLY A. Within 30-days after award of the Contract, submit to the Architect for approval, a source of supply schedule showing make, type, manufacturer's name and trade name of all material and equipment before any material is ordered. After approval is received, there shall be no change in the manufacturer of any materials or equipment except upon written order of the Architect. 2.6 SINGULAR NUMBER A. All references made to any particular item in the singular number shall apply equally to as many identical items that the completed Electrical System may require. 2.7 ANCHOR BOLTS A. Provide and set in place before pouring of concrete foundations, all necessary anchor bolts as required for equipment furnished under this Contract. Anchor bolts shall be of the hook type, of proper size and length to suit the equipment. Set anchor bolts in pipe sleeves of approximately twice the bolt diameter and one-half the length of the bolt. 2.8 SPARE AND LOOSE PARTS A. Parts removed from equipment and spare and loose parts furnished with equipment, shall be suitably labeled and safely stored by this Contractor until the completion of the work, and then delivered to the Owner. Before final payment, an itemized list of such spare and loose parts Supplementary Electrical Conditions

7 PART 3 - EXECUTION shall be prepared in triplicate by this Contractor. 2-copies shall be delivered to the Owner and the other copy shall be receipted by the Architect and returned to this Contractor. 3.1 ORDER OF PROCEDURE A. Reference shall be made to the General Conditions, Division 1 wherein the order of procedure of work is established. This Contractor is cautioned not to proceed with any work under this Division before fulfilling all applicable requirements of the procedure set forth therein. 3.2 COORDINATION WITH OTHERS A. This Contractor shall cooperate with all others involved in the construction of this project, coordinate the scheduling of his work so that he does not delay or interfere with their work, and shall also check the location of his equipment with others to avoid space conflicts. 3.3 PROTECTION OF WORK A. This Contractor shall be held responsible for the protection of and damage to his work prior to the final acceptance of same and shall repair or replace all damaged work at this own expense. 3.4 STORAGE OF MATERIALS AND EQUIPMENT A. Store material and equipment in a location which will not interfere with the operations of other Contractors and in a manner which will afford them maximum protection. B. All items of equipment shall be protected from moisture and changes in temperature which may cause condensation. 3.5 LOCATION OF OUTLETS A. The drawings are generally indicative and diagrammatic of the work to be installed. Carefully investigate the structural and finish conditions affecting the work and arrange all work accordingly, furnishing necessary parts and equipment that may be required to meet the various conditions. B. Wall switches are indicated on the drawings on the door strike side of the doors; however, it is the responsibility of this Contractor to verify final door swing arrangements prior to locating outlet boxes for wall switches. C. Determine at the site the location of all raceways, outlets and equipment. The right is reserved to change the location of any electrical outlet, control equipment, or motor to any point not over 10'-0" distant from the location shown, without extra cost; accordingly, do not install branch circuit wiring leading to the location of such equipment until the location has been approved. Space all lighting fixtures evenly on centers or joints of ceiling tiles or other architectural elements, or as dimensioned on the drawings. 3.6 TESTING A. Provide any tests of equipment, wiring or insulation deemed necessary by an inspection department or by the Architect and provide all apparatus, meters, materials, and labor required to make such tests. Remove any material or equipment which is found to be defective during the tests and replace with new at no additional cost to the Owner. Supplementary Electrical Conditions

8 B. Test all equipment which is furnished to the Contractor by other parties in the presence of an authorized representative of such party to determine whether or not the operation is satisfactory and that the equipment performs the function intended. 3.7 CUTTING AND PATCHING A. Where chases and openings are required in new work, notify the General Contractor who shall incorporate such chases and openings into his work. Furnish all necessary sleeves, lintels, anchor bolts, thimbles and frames, required for such work. B. Where openings are required in work already in place, all cutting and patching shall be done by or at the expense of this Contractor. C. This Contractor will be held responsible for the provision of openings, whether or not he serves proper notice to the General Contractor as to his requirements. It shall be his duty to closely watch the progress of the General Contractor, and to see that proper provisions are being made for his work. D. This Contractor shall consult with the Architect before cutting any openings, and shall cut such openings in an approved manner so that they will not weaken or damage any structural part of the building. 3.8 PAINTING A. Remove rust, clean and paint all auxiliary steel members and parts installed by this Contractor for the support of his work, using one coat of a rust inhibiting primer before erection. After the steel members are in place, paint with one coat of light gray oil paint. B. Distribution panels, panelboards, signaling system cabinets and lighting fixtures shall be finished painted at the place of manufacture. They shall be protected from damage during construction and this Contractor shall assume the responsibility of restoring any factory finish which is damaged. 3.9 SHOP DRAWINGS AND SAMPLES A. Submit shop drawings for all items of material and equipment as herein and after specified. Review the shop drawings prior to submission and verify that they are complete, including the following minimum information: complete construction details including dimensions, materials, and finishes; diagrams or illustration showing physical characteristics; performance data; description of operation; name of laboratory by which item will be labeled, certified, or listed; and where applicable, wiring diagrams showing the connections of all components of related equipment. B. Submit shop drawings promptly so that no delay will result in this Contractor's work or the work of others. Submit 6-copies. C. Submit samples for approval of all items which are of a different make or catalog number than those names in the Contract Documents. Supply samples for all other items upon request. D. No items requiring shop drawings or samples shall be purchased until after approval of same, except that orders may be placed subject to the approval of drawings or samples. E. Make the corrections indicated on the returned shop drawings and resubmit 8-corrected copies for final approval, furnishing such other copies that may be needed. No work shown on shop drawings shall be started until same has been returned approved. Supplementary Electrical Conditions

9 F. The Architect's examination of shop drawings, samples, or schedules, shall not relieve this Contractor from responsibility for deviations from drawings or Specifications, unless he has in writing called attention to such deviations at the time of submission, nor shall it relieve him from responsibility for errors of any sort in shop drawings and schedules SUBMISSIONS A. In addition to the requirements of Division 1, the Contractor shall provide product data and shop drawings for all materials proposed for installation under this Contract. The product data and shop drawings shall be submitted to the Architect for approval before such equipment is delivered to the site. The Contractor shall submit samples as may be required by the Architect of any article or materials to be used under this Contract, which samples, if approved, may be used on the work after serving their purpose as samples. B. Identify submittals with the following information permanently adhered to or noted on each separate component of each submittal and also noted on the transmittal form. Mark each copy of each submittal identically, with the following: 3.11 SUBSTITUTIONS 1. Project title and location. 2. The section number of the section by which the proposed equipment if specified. 3. The drawing number or numbers of the drawing or drawings by which the proposed equipment is indicated. 4. The name, address and telephone number of the supplier and the associated manufacturer. 5. Submittals presented on sheets 8-1/2 by 14 or less shall be presented as part of a bound volume. 6. Refer to the article titled SUBSTITUTIONS for all products which are not specified by manufacturer and catalog number and are intended to be submitted. A. The submissions are the Contractor s documents and the Architect s and Architect s approval constitutes an acknowledgment that the documents have been submitted and nothing more. It is the Contractor s responsibility to check his own submissions for compliance with the contract documents and job conditions. B. Throughout the specifications, types of materials may be specified by manufacturer s name and catalog number in order to establish standards of quality and performance and not for the purpose of limiting competition. Unless specifically stated otherwise, the bidder may assume the phrase or approved equal, except that the burden is upon the bidder to prove such equality. If the bidder elects to prove such equality, he must request the Architect's approval in writing to substitute such item for the specified item, and shall submit supporting data, and samples if required, to permit a fair evaluation of the proposed substitution with respect to quality, serviceability and warranty. C. When this Contractor desires to furnish equipment of a manufacturer other than the specified or intended, he shall include a complete specification of the substituted item, along with each submission copy of shop drawings, indicating the necessary modifications to the substituted product to satisfy the requirements of the contract specifications. Manufacturer s specifications shall be written as close as possible over the contract specifications and each paragraph shall bear the same paragraph number as the contract specifications so that close comparison can be made. Supplementary Electrical Conditions

10 D. The verification specification shall include the exact wording of the contract specification and the revised wording identified properly indicating all the deviations proposed. Each paragraph shall be denoted as TOTALLY COMPLIES, PARTIALLY COMPLIES, or DOES NOT COMPLY. If no deviations are noted, the Contractor must furnish the material or equipment in accordance with the contract specifications. E. Also, when the Contractor submits equipment or materials of the manufacturers specified, verification specifications must be submitted at the request of the Architect. F. The Contractor is responsible for confirming that all specified products will be available in a timely manner to manner to meet the contract schedule. Should the delivery time schedule of any specified product be an issue that could adversely affect the project schedule, the Contractor shall notify the Architect, in writing, within 14-days following the award the Contract. Documentation as to when specified products were ordered and anticipated delivery dates will be required to be submitted to the Architect at this time. Failing to comply with this paragraph will prohibit the Contractor from substituting a specified product based on delivery time issues IDENTIFICATION NAMEPLATES A. Identify all items of electrical equipment, protective devices and similar items by name, function and/or control. Provide nameplates with characters not less than 1/4-inch and minimum size of 1" x 3". Fabricate using two laminated black plastic sheets bonded with a middle sheet of white plastic and characters engraved in one black sheet to the depth of the white plastic. Attach nameplates with sheet metal screws or bolts and nuts. B. Submit a typewritten list of nameplates for approval before ordering. C. Plastic tape embossed nameplates will not be acceptable OPERATION AND MAINTENANCE DATA A. Collect two sets of complete instructions for operation and maintenance of all equipment, spare parts lists, and line per wire diagrams, for all pieces of equipment furnished under this Contract. Bind the data in a notebook, suitably indexed. Upon conclusion of the work, deliver two sets of notebooks to the Owner's Representative INSTRUCTIONS A. After all tests and adjustments have been made, fully instruct the Owner representatives regarding all details of operation and maintenance of equipment installed under this Contract RECORD DRAWINGS A. Retain a separate "Record" set of prints of the Contract Drawings on the job. Neatly mark on the "Record" set any and all installation changes. Keep this "Record" set up to date through the conclusion of the Contract. B. The marking of this "Record" set shall show all changes, as well as the actual plan location and elevation of all underground and concealed conduit. Deliver to the Owner before application for final payment SPECIAL ENGINEERING SERVICES A. In the instance of complex or specialized electrical systems such as fire alarm or similar miscellaneous systems, the installation, final connections and testing of such systems shall be made under the direct supervision of a competent Authorized Service Engineer who is in the employ of the respective equipment manufacturers or suppliers. Supplementary Electrical Conditions

11 B. Any and all expenses incurred in providing these equipment manufacturer's representatives shall be the responsibility of this Contractor GUARANTEE A. This Contractor and his surety shall guarantee in writing for a period of one year from the date of final acceptance that all materials, equipment and labor furnished by him are free from defects. This Contractor shall further guarantee that if any piece of material or equipment is found to be defective within the guarantee period because of faulty manufacture or faulty installation, in the opinion of the Architect, he will replace and install such material or equipment without any further expense to the Owner. B. Furnish 3-copies of all guarantees and certificates which are required CLEANUP OF PREMISES AND EQUIPMENT A. Upon completion of this Contract and after final approval of completion is given, remove all tools, benches and other workmen's appurtenances from the premises. Clean the premises of all remaining debris and leave the entire installation clean and in first-class operating condition. B. Clean distribution boards, panelboards and other electrical apparatus. C. Remove all dirt, insects, grease and other foreign materials from all enclosing globes and plastic diffusers of lighting fixtures. Remove all paint, grease and plaster from all wiring devices and coverplates IDENTIFICATION LABELING A. All secondary feeder conductors shall be identified by voltage and phase with H.W. Brady Company self-sticking labels. END OF SECTION Supplementary Electrical Conditions

12 SECTION WIRING METHODS EXTERIOR PART 1 - GENERAL 1.1 WORK INCLUDED A. Install underground secondary feeder conductors plastic PVC Schedule 40 ducts as indicated on the Drawings with a maximum earth cover of 30-inches, unless noted otherwise. PART 2 - PRODUCTS 2.1 MATERIALS A. Refer to appropriate accompanying sections of the Specifications. PART 3 - EXECUTION 3.1 EXCAVATION, INSTALLATION AND BACKFILLING A. Provide all excavating required for the installation of electrical facilities. This Contractor is responsible for coordinating and protecting all new and/or existing underground service lines such as gas, water, electric and telephone services and sanitary and storm water piping. B. Perform the excavation work on an "Unclassified Basis"; that is, all earth or rock formations shall be removed regardless of the type or hardness of such formations. Include the cost of such excavation in the Contract Price at the time of bidding. C. To the extent practicable, grade trenches so that the raceways have a fall of at least 3-inches per 100-feet away from the building. D. After underground electrical facilities are installed and tested, backfill all excavations with selected earth, placed in layers not exceeding 6-inches to thickness with each layer mechanically compacted to a density not less than the surrounding earth. Backfill all excavations under paved areas the full depth with "run-of-bank" gravel with approximately 50-percent sand content by volume. E. Provide a plastic marker strip along the entire length of the underground duct system, installed 12-inches below grade. Marker strip shall read 'CAUTION - BURIED ELECTRIC LINE BELOW' and shall be "Terra-Tape" as manufactured by Griffolyn Company, Houston, Texas, or an approved equal. F. All excavations which are improperly backfilled or where settlement occurs shall be reopened to the depth required for proper compaction, then refilled and compacted with the surface restored to the required grade, and compaction mounded and contoured. G. Restore all surfaces to their original condition including replacement of top soil, seeding and restoration of any paved surfaces damaged by these operations. 3.2 RESTORATION AND MAINTENANCE OF SURFACES Wiring Methods Exterior

13 A. This Contractor shall replace all surface material and shall restore paving, curbing, sidewalks, gutters, shrubbery, fences, sod and other surfaces disturbed to a condition equal to that before work began, furnishing all labor and material required. B. Restore damaged paved surfaces with new pavement matching that damaged. No permanent paving shall be placed less than 30-days after backfilling, unless approved by the Architect. C. All material and labor required for repair of defects in trench backfill and paved surfaces shall be supplied by this Contractor for the period required by the Maintenance Bond. END OF SECTION Wiring Methods Exterior

14 SECTION WIRING METHODS INTERIOR PART 1 - GENERAL 1.1 WORK INCLUDED A. In all portions of the building, install all feeder wire and cable in raceways as hereinafter specified, concealing all such wiring wherever possible. B. MC Cable shall be allowed for apartment branch circuits only unless noted otherwise. All MC Cable shall concealed. PART 2 - PRODUCTS 2.1 MATERIALS A. Utilize rigid steel or intermediate metal conduit for all raceways 3-inches and larger, for all conduit runs under floor slabs, where slabs are on grade, for all conduit runs in damp locations, for all exposed runs in the unfinished Mechanical Rooms or where otherwise required by the National Electrical Code. Electrical metallic tubing may be used in sizes 3-inches and smaller for all raceway runs, except as noted above. B. Use liquid-tight flexible steel conduit in lengths not exceeding 18-inches for the connection of motors and other items subject to vibration in all exposed areas and all damp locations. C. Flexible steel conduit (Greenfield) may be used in lengths not exceeding 48-inches for the connection of recessed lighting fixtures, and for motors or other items subject to vibration, which are installed above finished ceilings. PART 3 - EXECUTION 3.1 INSTALLATION A. The number of branch circuit home runs in each raceway is indicated on the drawings. END OF SECTION Wiring Methods Interior

15 SECTION ELECTRICAL SYSTEM PROTECTIVE DEVICE STUDY PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions, and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. Scope: This Section covers the furnishing of an electrical short circuit and overcurrent protective device coordination study, including an arc-flash hazard study, for the building electrical system required under this construction contract. B. Preparer: The electrical system protective device study required by this Section shall be prepared by a professional engineer registered in the State of PA and in the fulltime employment of the manufacturer of the switchboards. All studies shall be prepared by the same professional engineer. 1.3 SUBMITTALS A. General: Submit the following according to the Conditions of the Contract and Division 1 Specification Sections. B. Division 1: Conform to the requirements of Division 1, Section 01300, "Submittals". 1. In addition to the requirements of Division 1, the short circuit and protection coordination studies shall be bound in 8-1/2 by 11 hard cover bound volumes with drawings and diagrams folded to fit the in 8-1/2 by 11 hard format and securely retained in pockets or compartments of the rigid binder. 2. Ten copies of the study shall be submitted. 3. The study shall include each medium and low voltage distribution system. C. Industry Standards: Provide, for each section of the study, an identification and description of the industry testing standards on which the study is based. D. Certification: Certification by the Contractor that the protective devices have been adjusted and set in accordance with the approved protective device study shall be included for each adjustable protective overcurrent, over/under voltage, or related protective device. 1.4 DATA COLLECTION FOR THE STUDY A. The Contractor shall be responsible for and shall expedite collection of the data to assure completion of the studies as required for final approval of the distribution equipment shop drawings and/or prior to release of the equipment for manufacturing. 1.5 STUDY REQUIREMENTS A. Power Company: The study shall include the utility power company's system and relay characteristics. Electrical System Protective Device Study

16 B. General Content: Provide calculations, impedance diagrams, conclusions and recommendations as part of the general content of the study. C. Ground Fault Study: Include a ground fault study for each medium voltage switchgear line-up, medium voltage controller, low voltage switchgear line-up, switchboard, motor control center, distribution panelboard, branch circuit panelboards and other significant locations throughout the system. D. One Line Diagram: 1. Show, on the one line diagram, all electrical equipment and wiring to be protected by the overcurrent devices installed under this project. Clearly show, on the one line, the schematic wiring of the electrical distribution system. 2. Also show on the one line diagram the following specific information: a. Calculated fault impedance, X/R ratios, and short circuit values at each 480V switchboard bus, each busway, on each transformer at each 480 volt and 208 power panelboard. Provide short circuit value for each branch panelboard. b. Breaker and fuse ratings. c. Transformer KVA and voltage ratings, percent impedance, X/R ratios, and wiring connections. d. Voltage at each bus. e. Identification of each bus. f. Conduit material, feeder sizes, length, and X/R ratios. E. Short Circuit: Provide short circuit tabulations which include the system impedance's, X/R ratio, asymmetry factor, KVA, symmetrical and asymmetrical fault currents. F. General Study Requirements: Provide each study with the following items as a minimum: 1. Provide coordination plots which graphically indicate the coordination proposed for the several systems. Provide plots centered on full scale log-log forms. 2. Provide coordination plots with complete titles, representative one-line diagrams and legends, associated power company's relay or system characteristics, motor controller fuses and relays, significant motor starting characteristics, complete parameters for power, network and substation transformers, complete operating bands for low voltage switchboard circuit breaker trip devices, fuses, if applicable, and the associated system load protective devices. 3. Provide coordination plots which define the types of protective devices selected, together with the proposed coil taps, time dial settings and pick-up settings required. 4. The long time region of the coordination plots shall indicate a complete tap scale for each medium voltage relay and full load current transformer parameters and designate the pick-ups required for the low voltage circuit breakers. 5. The short time region shall indicate the medium voltage relay instantaneous elements, the magnetizing inrush, and American National Standards Institute (ANSI) withstand transformer parameters, the low voltage circuit breaker, short time and instantaneous Electrical System Protective Device Study

17 trip devices, fuse manufacturing tolerance bands, including the low voltage network protector fuses, when applicable, and significant symmetrical and asymmetrical fault currents. G. Equipment Selection: Coordinate each item of equipment as follows: 1. Select each primary protective device required for a delta-to-wye-connected transformer so the characteristic or operating band is within the transformer parameters, which includes a parameter equivalent to 58 percent of the ANSI withstand point to afford protection for secondary line-to-ground faults. 2. Provide the transformer damage curve for each transformer when the selected protective device is not within the associated parameters. 3. Separate low voltage power circuit breakers from each other and the associated primary protective device by a 16 percent current margin for coordination and protection in the event of secondary line-to-line faults. 4. Separate medium voltage relays by a 0.4 second time margin when the maximum three-phase fault flows, to assure proper selectivity. 5. The protective device characteristics or operating band shall be suitably terminated to reflect the actual symmetrical and asymmetrical fault currents sensed by the device. 6. Source combinations include proposed and future power company feeders, large motors, or generators. 7. Studies based on written calculations shall include sample calculations for each voltage category. H. Contract Drawings: The drawings and specifications indicate the general requirements for the motors, motor starter equipment, and medium voltage and low voltage equipment. Determine additional specific characteristics of equipment furnished in accordance with the results of the short circuit and protective device coordination study. 1. Submit any equipment design discrepancies and the proposed corrective modifications, if required, with the short circuit and protective device coordination study. Identify any variations clearly on the subsequent shop drawings. 2. Provide the necessary field settings, adjustments and minor modifications for conformance with the approved short circuit and protective device coordination study, without additional expense. 3. Do not submit equipment shop drawings until the short circuit and protective device coordination study has been approved by the Engineer. 1.6 MOTOR STARTING STUDY A. General: Submit drawings and studies which include a starting study for each low voltage or medium voltage motor 50 HP and larger or motors requiring conformity with the specified power company inrush limitations. 1. Provide written calculations and an equivalent impedance diagram to assure that the selected motors and controller equipment restrict the starting current within the specific Electrical System Protective Device Study

18 power company inrush requirements and within the voltage drop limitations for the motors and the principal incandescent lamp manufacturers. 2. Determine the percentage voltage drop from a consideration of the above factors, the frequency of starts, borderline of irritation, and borderline of flicker visibility. 3. The calculations and impedance diagram shall be complete and clearly define the base quantities selected, system, motor and starting equivalent impedances, conclusions, and recommendations. B. Contract Drawings: The drawings and specifications indicate the general requirements for the motors, motor starting equipment, and medium voltage and low voltage equipment. Determine additional specific characteristics of equipment furnished and provide requirements in accordance with the results of the motor starting study. PART 2 - PRODUCTS 1. Submit the equipment design discrepancies and the proposed corrective modifications, if required, with the motor starting study. Identify any variations clearly on the subsequent shop drawings. 2. Provide the necessary field settings, adjustments and minor modifications for conformance with the approved motor starting study, without additional expense. 3. Do not submit shop drawings until the motor starting study has been approved by the Engineer. 2.1 SHORT CIRCUIT AND PROTECTIVE DEVICE STUDY A. The short circuit study shall be performed with the aid of a digital computer program and shall be in accordance with the latest applicable IEEE and ANSI standards. B. In the short circuit study, provide calculation methods and assumptions, the base per unit quantities selected, one-line diagrams, source impedance data including power company system characteristics, typical calculations, tabulations of calculation quantities and results, conclusions, and recommendations. Calculate short circuit interrupting and momentary (when applicable) duties for an assumed 3-phase bolted fault at each supply switchgear lineup, unit substation primary and secondary terminals, low-voltage switchgear lineup, switchboard, motor control center, distribution panelboard, pertinent branch circuit panelboard, and other significant locations throughout the system. Provide a ground fault current study for the same system areas, including the associated zero sequence impedance data. Include in tabulations fault impedance, X to R ratios, asymmetry factors, motor contribution, short circuit kva, and symmetrical and asymmetrical fault currents. C. Include on the curve sheets power company relay and fuse characteristics, system medium-voltage equipment relay and fuse characteristics, low-voltage equipment circuit breaker trip device characteristics, pertinent transformer characteristics, pertinent motor and generator characteristics, and characteristic of other system load protective devices. Include at least all devices down to largest branch circuit and largest feeder circuit breaker in each motor control center, and main breaker in branch panelboards. Include all adjustable settings for ground fault protective devices. Include manufacturing tolerance and damage bands in plotted fuse characteristics. Show transformer full load and 150, 400, or 600 percent currents, transformer magnetizing inrush, ANSI transformer withstand parameters, and significant symmetrical and asymmetrical fault currents. Terminate device characteristic curves at a point Electrical System Protective Device Study

19 reflecting the maximum symmetrical or asymmetrical fault current to which the device is exposed. D. Include complete fault calculations as specified herein for each proposed and ultimate source combination. Note that source combinations may include present and future supply circuits, large motors, or generators as noted on Drawing one-lines. E. Submit qualifications of individual(s) who will perform the work for approval prior to commencement of the studies. Provide studies in conjunction with equipment submittals to verify equipment ratings required. Submit a draft of the study to Engineer for review prior to delivery of the study to the Owner. Make all additions or changes as required by the reviewer at no additional cost to the Owner. F. Utilize equipment load data for the study obtained by the Contractor from Contract Documents, including Contract Addenda issued prior to bid openings. G. Include fault contribution of all motors in the study. Notify the Engineer in writing of circuit protective devices not properly rated for fault conditions. H. Provide settings for the air handling unit motor starters or obtain from the mechanical contractor, include in the study package, and comment. 2.2 ARC-FLASH HAZARD STUDY SPECIFICATION A. Study Requirements 1. A detailed arc-flash hazard study shall be performed in accordance with the latest versions of all appropriate and applicable codes and standards including, but not limited to, NFPA 70E and IEEE Std The scope of this evaluation is the system as defined by the short-circuit study but is limited to all system voltages of 250V and up as well as 208V and 240V systems fed from 125 kva transformers and larger. 3. The study work shall be performed by the equipment manufacturer's engineers involved in the analysis of power systems for a period of at least five years. 4. The arc-flash hazard study shall be conducted by the same personnel performing the project s short-circuit and coordination studies, the output data of which shall form the input basis for the arc-flash hazard calculations and analysis. Equipment layouts and configurations shall be obtained from the manufacturer s final submittals and project layout drawings. 5. The results of this study shall include the calculated arc-flash boundary and incident energy (in cal/cm 2 ) at key points throughout the scope of the system defined for the short-circuit and coordination studies. The study report shall also provide a detailed verbal discussion and explanation of the tabulated outputs, and an executive summary of these results. a. Three bound copies of this report shall be provided. B. Hazard Label Requirements Electrical System Protective Device Study

20 PART 3 - EXECUTION 1. Properly detailed shock and arc-flash hazard labels shall be provided for all appropriate locations such as: a. The front of each main or incoming compartment b. The front of each vertical low-voltage stack or each medium-voltage breaker door c. The front of each accessible auxiliary or conductor compartment d. Each accessible rear or side vertical section 2. Each label shall be at least 5 x 3.5 in size, black ink laser-printed on a white background with a prominent red danger symbol and two yellow triangles one for arc-flash hazard and one for shock hazard. 3. Each label shall be of durable polyester stock, self adhesive, and designed to resist degradation from scuffing, chemicals, moisture and wide temperature fluctuations. It shall also incorporate a polyvinyl polymer over-laminate to assure color stability, and resistance to UV, chemicals, and common cleaning solvents. 4. Each label shall incorporate the short-circuit Bus ID for the bus behind the cover/door on which it is to be mounted, the calculated incident energy and its corresponding hazard/risk PPE (personal protective equipment) category number, the calculated arc-flash protection boundary, the shock hazard boundaries, and a description of the combined level of PPE. 5. An Excel spreadsheet shall be provided prior to printing the labels to identify the content for each label and its targeted equipment location. One comment line on each label will provide details for its mounting location. 6. The printed labels shall be provided to the contractor for installation on the equipment. 3.1 POWER COMPANY APPROVAL A. Copies of the final report shall be submitted to the power company for their review and approval. Approved copies of the report shall be submitted to the Engineer. 3.2 ANALYSIS A. Analyze the short circuit calculations, and highlight any equipment that is determined to be underrated as specified. Verify that all current transformers are the proper size to meet equipment requirements. Propose approaches to effectively protect the underrated equipment. Proposed major corrective modifications will be taken under advisement by the Engineer, and the Contractor will be given further instructions. Provide minor modifications to conform to the study (examples of minor modifications are trip sizes within the same frame, the time curve characteristics of induction relays, and C.T. Ranges). B. After developing the coordination curves, highlight areas lacking coordination. Present a technical evaluation with a discussion of the logical compromises for best coordination. 3.3 FIELD SETTINGS A. The Contractor shall perform field adjustments of the protective devices as required to place the equipment in final operating condition. The settings shall be in accordance with the Electrical System Protective Device Study

21 approved short circuit study, protective device evaluation study, and protective device coordination study. B. Necessary field settings of devices and adjustments and minor modifications to equipment to accomplish conformance with the approved short circuit and protective device coordination study shall be carried out by the Contractor at no additional cost to the Owner. 3.4 IDENTIFICATION A. The Contractor shall install the arc-flash labels and identify boundaries. Boundaries shall be painted in a color per NFPA 70E. END OF SECTION Electrical System Protective Device Study