Mike Holt

Mike
Holt
Articles
Code Q&A
Q. The old panels in an industrial building do not have complete panel schedules. Does the Code require us to update them?
Stumped by the Code? 2
Q. We have a 400A, 3-phase feeder that we want to wire with two parallel sets of 3/0 AWG conductors in the same raceway. Is this acceptable?
Pools and Spas — Part 1 of 3 1
If Art. 680 of the National Electrical Code (NEC) has one overriding concern, it's to keep people and water separated from electricity. Article 680 applies to pools, spas, hot tubs, fountains, and similar bodies of water.
Code Q&A
Q. Can the ground wire from a ground rod terminate in the meter socket enclosure, or must it terminate in the service disconnect?
Code Q&A
Q. What are the NEC lighting and switching requirements for stairways?
Electrical Services — Part 2
Looking at Fig. 230.1 in the NEC, we can see that the second and third major areas of Art. 230 provide requirements for service entrance conductors (Part
Stumped by the Code?
Q. What are the requirements for supporting communications raceways and cables above a suspended ceiling?
Top 2008 NEC Changes 1
The bonding rules for reducing voltage gradients around permanently installed pools, outdoor spas, or outdoor hot tubs were changed again. Here's a summary of the entire section. (A) Performance. Equipotential bonding is intended to reduce voltage ...
Code Q&A
Q. What are the AFCI protection requirements for dwelling units, and do these requirements apply to smoke alarms?
Code Q&A
Q. Does the code require GFCI-type receptacles anywhere, or can you use GFCI breakers for all required GFCI locations?
Stumped by the Code?
Q. What are the termination requirements where NM cables enter a panel?
Electrical Services — Part 1
If you look at Fig. 230.1 in the NEC, you'll see that Art. 230 divides neatly into three general of coverage. The first includes general requirements,
Code Q&A
Q. In our local high school science lab, receptacles have been installed within 4 in. from the edge of a sink. Is this acceptable per the Code?
Code Q&A
Q. Where does the Code address which way the grounding terminal of a receptacle goes (up or down)?
How Much Working Space Is Enough? 3
In order to create safe working conditions, OSHA and the NEC provide working space requirements that vary according to the hazards involved with
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