Ground Fault using SG/DG weatherproof boxes [RE-wrenches]

[Jeffery Wolfe, Global Resource Options]

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William,

Sounds more like a reason to avoid using taped split bolts than to avoid
using MC's. Polaris type connectors are faster, safer, more rugged, and
not much more money.

Jeff Wolfe
Global Resource Options, Inc., Solar Energy Solutions
-----Original Message-----
From: William Miller [mailto:wrmiller at charter.net] 

Randy:

Here is yet another reason to avoid the use of MC cables!  Just say no.

William Miller



At 12:16 PM 3/17/2006, you wrote:

>Wrenches,
>We use outdoor rated SG and DB boxes and blank covers when we have 
>strings dispersed across a flat roof to transition from MC wire.
>Recently, I had an inspection of a 3kw system where the inspector took 
>off the cover of a single gang, waterproof box and caused a ground 
>fault when he put the cover back on.
>
>The reason for this is the box cover screws are =BE=94 which is 
>unnecessarily long. When the inspector wedged the taped split bolt back

>in the box he positioned it directly behind the screw hole. The screw 
>bored through a thick layer of tape like butter to the split bolt 
>causing the ground fault.
>

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