Code Forum Recap - April 2015


Code Forum Recap - April 2015

Another great resource from Mike Holt Enterprises! The following is a list of the top topics discussed on our code forum in the past month. Simply click on any topic that interests you to read or join in the discussion. If you’re not already registered as a code forum member, click here to sign up now!

1: NEUTRAL CONDUCTOR FROM THE DISTRIBUTION UTILITY with 69 replies in the Grounding versus Bonding forum
2: GFCIs under kitchen sinks with 59 replies in the NEC forum
3: "Dirty" voltage on bus. with 51 replies in the Electrical Calculations / Engineering forum
4: Temp power to office trailer with 49 replies in the NEC forum
5: Home feeder with 41 replies in the NEC forum
6: AFCI protection @ 1st device with 40 replies in the NEC forum
7: 120v & 277V Through a 2p switch with 38 replies in the NEC forum
8: Too many opinions with 36 replies in the NEC forum
9: My Wyotech teacher tonight argued with me about grounding with 36 replies in the Education forum
10: Tranny inrush formula? with 31 replies in the Electrical Calculations / Engineering forum
11: Should the NEC ditch grounding electrodes? with 31 replies in the Grounding versus Bonding forum
12: How often do you have to renew your license with 30 replies in the NEC forum
13: Don't scold with 27 replies in the NEC forum
14: romex connector + coupling with 27 replies in the NEC forum
15: Colors with 26 replies in the NEC forum
16: New computer windows 8? with 26 replies in the Business Management / Estimating forum
17: Kitchen Pop-up outlets with 26 replies in the NEC forum
18: I never heard this before with 25 replies in the NEC forum
19: Laundry Room Arc Fault with 24 replies in the NEC forum
20: Call my self Mr. MH problems. with 24 replies in the NEC forum
21: Stack unit washer and dryer with 23 replies in the NEC forum
22: WYE - WYE? with 23 replies in the Electrical Calculations / Engineering forum
23: Voltage Drop 3% or 5% with 22 replies in the NEC forum
24: Use of NM wire with 22 replies in the NEC forum
25: Aluminum to Aluminum ASAP please ... with 21 replies in the NEC forum
26: THE PHYSICS of . . . . MAGNETIZATION-CURRENT INRUSH with 21 replies in the Electrical Calculations / Engineering forum
27: 312.9 Amp Feeder with 21 replies in the NEC forum
28: One 8 AWG wire can handle about 50 Amps. Two would handle 100 Amps. with 21 replies in the NEC forum
29: romex for temp with 20 replies in the NEC forum
30: Using a chain link fence as GEC?? with 20 replies in the Grounding versus Bonding forum

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Comments

Is the water heater considered an appliance

Zack oliver May 5 2015, 7:24 pm EDT
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Comment to your Code forum Question : Newutral conductor from the Distribution utility. Response: #1. Utility facilities are excepted from the NEC, they must follow: 1. Their utility wiring stanards and/or 2. The NESC. What is important is the service conductors brought under the NEC by the inside wiring contractor. under NEC Article 250.24(C)all AC systems at 1000v or less must have a grounded conductor at the point of service with the electric utility regardless whether the inside wiring load is strictly three pole three phase or 2 poles single phase. There are some exceptions listed. What I have always question but never had a "clean' answer. Why this article has a restriction to 100v or less. Many utilities service voltage to customers above the 1000v limit and the need to have a low impedance pass from the service disconnect to the utility power source remains. Hence a fault to service disconnect to case requires this low impedance path which the grounding rod will not suffice. Any help on this portion.....?

Ed nfante May 5 2015, 11:42 am EDT
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