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Trailer-mounted Generator Violations #117384 06/06/04 10:34 PM
Joined: Oct 2000
Posts: 3,631
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Here are some photos of a job site trailer-mounted generator. There are two loads, one is the wire in the PVC supplying the first job trailer and the second is the 10/3 extension cord supplying a second job trailer.

Based on these photos, can you spot the 6 code violations?

- Dave Nix
[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

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Re: Trailer-mounted Generator Violations #117385 06/19/04 03:37 AM
Joined: Mar 2004
Posts: 391
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BigJohn Offline
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  • 1st Picture:
  • Conductors subject to damage - 300.4
  • No mechanical continuity of raceway - 300.12
  • Incomplete raceway - 300.18
  • Incomplete raceway and no support on raceway - 352.30
  • If that conduit is schedule 40 and subject to damage, violation of 352.12(C).
  • If one of the conductors on that lug is the GEC, violation of 250.64(B)
  • If that lug is not designed for use with that ring-connector, violation of 110.3(B).
  • 2nd Picture:
  • Aluminum GEC too close to the earth - 250.64(A)
  • Grounding electrode above grade - 250.53(G)
  • The connection of that GEC to the electrode looks really suspicious, possible violtation of 250.70.
3rd Picture:
Not sure. Maybe a violation of 400.8 or something in Article 552? [Linked Image]

4th Picture:
Taking a cue from the prominent "Schedule 40" and assuming the conduit is subject to damage - 352.12(C)

Anything I missed? [Linked Image]

Question: Since that generator isn't even required to have a grounding electrode, could it fail inspection because of the violations concerning the electrode and GEC? Could an inspector really say: "You don't need that electrode, but since you put it in, you gotta satisfy 250.56 by putting in another!" [Linked Image]

-John

[This message has been edited by BigJohn (edited 06-19-2004).]

Re: Trailer-mounted Generator Violations #117386 06/19/04 09:29 PM
Joined: Oct 2003
Posts: 147
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crash Offline
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I would guess that the job trailer, supplied by the extension cord in the third picture, would require a 120/240 volt supply and a 10-4 extension cord.


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