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#116686 04/17/04 06:52 AM
Joined: Dec 2000
Posts: 4,289
This is work done by one of our crews. Their work is generally good, but there's an obvious violation. Can you do better than the local inspectors and spot it? (not the workspace violation)

[Linked Image]

[Linked Image]

The guys have never been called on it, so stopping the "habit" won't happen until there's another option (Screaming and yelling would get me nowhere, I'd like to offer something positive).

Does anyone have any ideas? How would you make it better and Code compliant??

[This message has been edited by electure (edited 04-17-2004).]

#116687 04/17/04 08:34 AM
Joined: May 2001
Posts: 552
Are you concerned with gutter fill and derating?

#116688 04/17/04 10:01 AM
Joined: Sep 2003
Posts: 650
How close are those transformers to the wall? Do they have a vent opening on the 'back'?


#116689 04/17/04 10:40 AM
Joined: Jun 2003
Posts: 1,143
What's with the apparantly unsupported pipe...was it placed there as a spacer, and then forgotten?

pic1 - behind the xformers

pic2 - a little more obvious... just behind the xformer - 8 blocks up from the c-strut.

#116690 04/17/04 11:39 AM
Joined: Sep 2003
Posts: 650
In the transformers, do the conductors go under the core to the lugs, over the core to the lugs, or are the lugs facing the wall?


#116691 04/17/04 12:33 PM
Joined: Sep 2003
Posts: 114
Just a wild guess here.. but are the top breakers in the bigger panels too high up from the floor?

#116692 04/17/04 12:40 PM
Joined: Jan 2003
Posts: 4,391
Scott you got me stumped.

I thought of labels but I think I see some.

I thought of the transformers in the working space but they are too high for that.

I thought of protection from physical damage but that is a subjective article and if the AHJ does not think these are subject to damage then it is OK. [Linked Image]

So what is it? [Linked Image]

Pretty nice looking parallel pipe work. [Linked Image]


Bob Badger
Construction & Maintenance Electrician
#116693 04/17/04 12:47 PM
Joined: Jul 2002
Posts: 680
Trough above the panels??

Those 2 seal offs going into that 1 panel must be some expensive.

Is it a car shop, looks like a transmission jack??

#116694 04/17/04 03:54 PM
Joined: Aug 2001
Posts: 599
I must agree with TXSparky on the gutter fill. Thats all I can really see.

#116695 04/17/04 04:08 PM
Joined: Dec 2000
Posts: 4,289
Yes, it's the derating in the wireway. Everything else is ok. (The C/B's aren't above 6'7", the sealoffs are all poured, xfrmrs have plenty of clearance, lugs are on front bottom. I don't see any unsupported pipe) [Linked Image]
The wires in that wireway should be derated to 35%. Most of those panelboards are 42 circuits, and the number of conductors in a cross-section greatly exceeds 40. 310-15(b)(2)(a).

Can you think of another way that this could be done and have it come out clean and still comply??

(And yes, it's an auto service garage)...S

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