points of grounding

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Tasker32

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current employer wants satellite grounding to the AC disconnect regardless. I have a issue with mounting a ac grounding clip to the front of the box or taking a screw driver to break the side weld joints to get one on.
Is it NEC acceptable to clamp the ground wire to the condensing unit itself and still be in compliance to 810.21 (f) and 250.4
 
I don't see in art. 810.51(F) where your installation would comply. It sounds like you need to try and get back to the service and pick up your ground there from any place mentioned in the art.
 
art 800 is not my strongest area of the book, im afraid to say. I understand the jest of connecting the dishes ground with the buildings grounding system. with repeated quoteing of 810.21 f1-3 (in nec 2005)by employer as for the reason to pull a ground to the ac disconnect or to the meter base. "effectively grounded metal structure"

but my main curiosity is ,is there a art about obstructing a electric box (ac disconnect) that i can quote as a reason not to ground to ac disconnect.
 
Tasker32 said:
current employer wants satellite grounding to the AC disconnect regardless.
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If you mean air-conditioning AC, that won't fly no matter what you use. A branch-circuit's EGC is not a GEC.

If you mean alternating-current AC, as in the building's main disconnect enclosure, that's permissable.

The best place would be the driven ground or other existing grounding electrode.
 
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