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Breaker Location Question/Confusion 27 Aug 2013 | 06:30 am
Let me start with what I have first, then the question: I changed an outdoor main breaker panel 200A. The panel only has the main 200A breaker and two 100A breakers, each feeding a sub panel. I put t...
HRG or NRG Resistance grounding 27 Aug 2013 | 06:28 am
Hello, This question might be too silly or too odd please don't mind.... When i look at the pictures of neutral grounding resistor it is all series winding inside how can a thin wire can limit fault...
2014 already!???? 27 Aug 2013 | 06:23 am
Massachusetts doesn't play around do they? Date: August 23, 2013 To: PFS Regional Offices, Plan Reviewers and Inspectors Servicing Modular Manufacturers Shipping into Massachusetts cc: Modular Manu...
Makeup air requirement for range hoods over 400cfm 27 Aug 2013 | 05:51 am
I just learned about this code from the 2009 IRC. For anybody who doesn't know, if you have an exhaust hood at a certain cfm (400, usually) that exhausts to the outside you must have a way to makeup t...
GFCI's & auto transformers......... 27 Aug 2013 | 05:08 am
Hey Guys, Another interesting one! Am installing two 230 Volt@ 10.0 amp single phase autoclaves to steralize glassware, accessories, etc. in a clean research enviromment and classroom. The manufactur...
SO cord used to wire a light fixture 27 Aug 2013 | 04:15 am
I have several fluorescent light fixtures to wire on a paint booth. All the fixtures are on the outside of the paint booth. In order the change lamps in the fixtures, the fixtures must be removed from...
Control circuit with other power conductors. 27 Aug 2013 | 04:10 am
Hello everyone. Is there a nec issue if I run control conductors (class 1, 120v) for relays' coils for lighting in same raceway with other power conductors? Or does my control circuit for relays has t...
AFCI Success Story with Knob & Tube (well, mostly) 27 Aug 2013 | 03:50 am
There's a lot of bad press on AFCI on this forum, I though I'd share a semi-success story: In a 1930's construction home a double-pole AFCI was added the legacy multiwire shared neutral Knob & Tube c...
Unlicensed installation of underground pvc conduit. 27 Aug 2013 | 02:58 am
Can a general contractor hire unlicensed workers to install electrical pvc on a job so a licensed crew can install the wire at a later date?
Autorecloser fuse saving scheme - lowset based on load current or conductor ampacity 27 Aug 2013 | 12:25 am
Good day, I am brainstorming a coordination problem whereby the inverse time overcurrent lowsetset pickup of an autorecloser has to be set for a 12kV feeder. The feeder has a small load of about 60A ...
