MA Electric Code Challenges for Architects

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1 MA Electric Code Challenges for Architects Boston Society of Architects Codes Committee March 19, 2013 Presented by Doug Anderson 313 Congress Street Boston, MA fax

2 Best Practice Commercial Construction Consulting is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-aia members are available upon request. This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

3 SL1 Learning Objectives Basics of electrical engineering Scope of the NEC and review of the MA Amendments Differences between emergency and standby power Architectural impacts of electrical code requirements

4 Slide 3 SL1 Needs a 4th learning objective Sara Lavado, 3/15/2013

5 Basics of Electrical Engineering V = Voltage The force behind electricity I = Current (amperes) The volume of flow of electricity R = Resistance (ohms) The resistance to the flow W = Power (watts) Measure of work

6 Basics of Electrical Engineering Ohm s Law V = Voltage I = Current (amperage) R = Resistance V = I * R

7 Basics of Electrical Engineering DC = Direct Current AC = Alternating Current

8 Basics of Electrical Engineering Power V = Voltage I = Current (amperage) P = Power (watts) (AC & DC) VA = Volt-amperes (AC) P = V * I * pf (power factor)

9 Basics of Electrical Engineering AC Power VA = V * I P = V * I * pf (power factor)

10 Basics of Electrical Engineering Three phase AC Power

11 Basics of Electrical Engineering Three phase AC Power

12 Basics of Electrical Engineering Power Losses P = V * I P = (I*R) * I P = I 2 * R

13 Basics of Electrical Engineering Power Losses 10,000 kw: 480V * 21A (#10, 3.3 ohms/3,000 ft) 240V * 42A (#6, 1.3 ohms/3,000 ft)

14 Basics of Electrical Engineering Power Losses P = I 2 * R 21 2 * 3.3 ohms = 1,450 VA loss 42 2 * 1.3 ohms = 2,300 VA loss

15 Basics of Electrical Engineering Transformers 240V * 42A 480V * 21A Power is constant

16 Scope of the NEC Installations Wiring Methods Wiring Materials Equipment Special Conditions (emergency and stand by)

17 Scope of the NEC, MA amendments

18 Scope of the NEC, MA amendments

19 Scope of the NEC, Installations Working Space/ Working Clearance

20 Scope of the NEC, Installations Working Space Working Clearance

21 Scope of the NEC, Installations Working Space Working Clearance

22 Scope of the NEC, Installations Working Space Working Clearance

23 Scope of the NEC, Installations Working Space Working Clearance

24 Emergency & Stand-By Power Scoping requirements for each are in the Building Code Emergency Power: Exit Signs Egress Lighting Elevator (travel >70 feet, 524 CMR) High Rise: Fire Pump Elevator Fire Alarm and Detection Systems Voice Evacuation

25 Emergency & Stand-By Power Legally Required Stand-by Power: High Rise: Fire Command Center Smoke Control systems

26 Emergency & Stand-By Power Sources of Emergency and Stand-by Power: Generators Batteries

27 Emergency & Stand-By Power Sources of Emergency and Stand-by Power: Separate Service Fuel Cells

28 Emergency & Stand-By Power Installation Requirements of Emergency and Stand-by Power Two Hour Separation required for Prime Mover ATS Smoke Control Controls Emergency Only: Feeders to Panelboards

29 Architectural Impacts Room Sizes Room Locations Room Ratings Shafts

30 Thank you for your time! Questions? This concludes The American Institute of Architects Continuing Education Systems Program Doug Anderson 313 Congress Street Boston, MA fax

31 C 3 Services: MEP / FP Engineering Due Diligence Construction Management Owner s Representatives Development Advisory Code Advisory Building Envelope 313 Congress Street Boston, MA fax