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03-13-2007, 05:10 PM
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#1
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Senior Member
Join Date: Mar 2007
Location: Leesburg VA
Posts: 6,527
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A few violations
This is a sub panel and that is no simple screw.
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03-13-2007, 05:13 PM
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#2
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Senior Member
Join Date: Mar 2007
Location: Leesburg VA
Posts: 6,527
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How good does steel conduct?
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03-13-2007, 05:46 PM
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#3
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Moderator
Join Date: Jan 2007
Location: Beautiful Cumberland Valley, in PA
Posts: 6,875
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The EMT as dummy fuses I've seen before, as well as copper pipe. The fender washers on the transformer flags puzzles me. Why do you suppose they felt the need to use fender washers there?
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03-13-2007, 05:48 PM
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#4
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Moderator
Join Date: Jan 2007
Location: Beautiful Cumberland Valley, in PA
Posts: 6,875
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Somebody went to a lot of effort to put an MBJ in that sub when they didn't even need one.
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03-13-2007, 05:48 PM
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#5
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Senior Member
Join Date: Mar 2007
Location: Leesburg VA
Posts: 6,527
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See this all the time. The holes are 1/2" and the lugs fall into the holes.
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03-13-2007, 05:58 PM
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#6
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Moderator
Join Date: Jan 2007
Location: Beautiful Cumberland Valley, in PA
Posts: 6,875
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Quote:
Originally Posted by brian john
See this all the time. The holes are 1/2" and the lugs fall into the holes.
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I don't have occasion to open many transformers that are already commissioned, so I havn't seen this. I crimp terminals on, so I guess I don't have this issue. I just use a terminal with the same size hole as whatever I'm bolting it to.
Thanks for sharing your pictures and your commentary! We love pictures!
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03-13-2007, 07:27 PM
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#7
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Senior Member
Join Date: Jan 2007
Location: Salt Lake City
Posts: 617
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In my area the GEC needs to be continuos from the electrode, through the EGC bond then onto XO.
This is why I always do my equipment bond with a 'feed through' lug.
I'm not even sure if two lugs under on bolt is legal, never seen that either
__________________
Joe Momma was here 
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03-19-2007, 08:46 PM
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#8
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Senior Member
Join Date: Mar 2007
Location: Leesburg VA
Posts: 6,527
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Quote:
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In my area the GEC needs to be continuos from the electrode
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I assume this is a local code or a local inspectors WANT. No real reason for that practice that I can see.
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03-20-2007, 10:53 AM
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#9
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Ax grinder
Join Date: Jan 2007
Location: North Logan, Utah
Posts: 679
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Quote:
In my area the GEC needs to be continuos from the electrode, through the EGC bond then onto XO.
This is why I always do my equipment bond with a 'feed through' lug.
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I agree with Brian, there is no requirement in the NEC for running the GEC continious as you have discribed.
Quote:
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I assume this is a local code or a local inspectors WANT.
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It must be what the inspector wants to see. Utah has no State or Local amendments to the NEC.
Chris
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03-25-2007, 06:50 PM
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#10
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Senior Member
Join Date: Mar 2007
Location: USA
Posts: 314
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Dummy Fuses
Quote:
Originally Posted by MDShunk
The EMT as dummy fuses I've seen before, as well as copper pipe. The fender washers on the transformer flags puzzles me. Why do you suppose they felt the need to use fender washers there?
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Dummy Fuses here:
http://www.connex-electronics.com/ht...dummy_fuse.pdf
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03-25-2007, 06:57 PM
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#11
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Moderator
Join Date: Jan 2007
Location: Beautiful Cumberland Valley, in PA
Posts: 6,875
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Quote:
Originally Posted by Joe Tedesco
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 And, in case there's any doubt, they have stamped on them "THIS IS NOT A FUSE". I've seen them used from time to time do disconnect the neutral along with the hots, without actually fusing the neutral. The "EMT dummy fuse" is a no-go, though.
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03-25-2007, 07:27 PM
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#12
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Member
Join Date: Jan 2007
Posts: 48
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Quote:
Originally Posted by Joe Tedesco
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Thanks Joe! We use these for 240V grounded B circuits.
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