Code Q&A
Dec 3, 2009, By Mike Holt
Q. I recently saw a service disconnect that was being used as a conduit for two feeder circuits. Is this legal?...
Code Q&A
Nov 19, 2009, By Mike Holt
Q. I need to run a feeder to a pool house panel. What are the wiring methods required for this type of installation?...
Code Quandaries
Nov 1, 2009, By Mike Holt, NEC Consultant
Q. Is it legal to splice conductors in an "LB" fitting?...
Code Q&A
Oct 22, 2009, By Mike Holt
Q. Can I install a panel in the clothes closet of a house if the working space of 110.26 is maintained?...
Code Q&A
Oct 8, 2009, By Mike Holt
Q. We do a lot of generators for residences, and only recently have been getting written up on our transfer switches. The inspectors are saying that if I use the transfer switch to transfer the entire house — and I put it between the meter and the service disconnect — then the transfer switch must be 'service rated.' Can you help me understand the rules, please?...
Code Quandaries
Oct 1, 2009, By Mike Holt, NEC Consultant
For a 240V to 208Y/120V transformer, is it better to bond the neutral to the metal frame at the transformer itself, at the panel, or at both locations?...
Code Q&A
Sep 24, 2009, By Mike Holt
Q. What is the maximum length of raceway I can use where the conductor ampacity is not required to be adjusted for conductor bundling?...
Code Q&A
Sep 10, 2009, By Mike Holt, NEC Consultant
Q. We have a heat tape system installed on a metal roof. Someone told us to use a GFCI on the circuit, and someone else told us not to. Does the NEC offer any guidance here?...
Stumped by the Code?
Sep 9, 2009, By Mike Holt, NEC Consultant
Q. Do we have to install a receptacle behind the swing of a door in a bedroom of a dwelling unit, even if the wall is only 2 ft 6 in. wide?...
Code Quandaries
Sep 1, 2009, By Mike Holt, NEC Consultant
Q. What are the NEC grounding requirements for satellite dishes?...
Code Q&A
Jul 16, 2009,
Q. Can we install a 3-wire feeder (no equipment ground) to a pool house and bond the neutral and ground at the new panel?...
Code Q&A
Jul 2, 2009, By Mike Holt
Q. Is the grounding conductor for a TV antenna sized the same as a grounding conductor for a satellite dish?...
Code Quandaries
Jul 1, 2009, By Mike Holt, NEC Consultant
Q. I am having a hard time understanding the rule on how to size the circuit breaker/fuse for a motor that has separate overload protection. Can you please explain this rule?...
Code Q&A
Jun 18, 2009, By Mike Holt
Q. Do we still have to bond the deck of an outdoor swimming pool if the deck is constructed of pavers?...
Code Q&A
Jun 4, 2009, By Mike Holt
Q. We are being told that we must GFCI protect our receptacle for the washing machine if it is located within 6 ft of the laundry sink....
Code Quandaries
Jun 1, 2009, By Mike Holt, NEC Consultant
Q. I am having a hard time understanding the feeder tap rules. Can you please show an example of how the 1/10 rule for 10-ft taps applies?...
Code Q&A
May 21, 2009, By Mike Holt
Q. What are the requirements for grounding metal equipment racks supporting computer servers?...
Code Q&A
May 7, 2009, By Mike Holt
Q. We are being told that we can’t use PVC conduit underground to provide power to the gasoline pumps we are wiring. Is this true?...
Code Quandaries
May 1, 2009, By Mike Holt, NEC Consultant
Q. How does the Code address diesel fuel dispensers as they relate to hazardous locations? ...
Code Q&A
Apr 23, 2009, By Mike Holt
Q. I am hearing differing opinions about the requirements for bonding steel gas piping. What are the rules for this?...
Code Q&A
Apr 9, 2009, By Mike Holt
Q. The old panels in an industrial building do not have complete panel schedules. Does the Code require us to update them?...
