Can I use a piece of schedule 40 conduit, a pair of male threaded adapters, and a pair of locknuts to connect a meter pan and a 3R loadcenter mounted side by side about 7 inches apart? The conduit KO would be well below the buss bars. For what it's worth, the poco used sch40 to bring the power up to their meter pan (they provide and install the pan).
Outdoor PVC conduit question
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If it's ok with your inspector. From your brief description, I doubt the 7" span between boxes would be considered 'subject to physical damage' so I'd bet you'd be ok. You'll also need bushings on the MA's if the wires are #4 or larger.
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Again, it's what the inspector wants. PVC pipe & fittings that are glued up properly will be watertight. The issue is when the pipe is coming out of the sides of the boxes and where the MA's fit in the knockout. If the fitting & locknut are made up tight and seal well against the box, I've had inspectors say it was ok (and like yours, the pipe was below the busbars). I've also had an inspector in a simular situation request the fitting to box area be sealed with silicone as an added measure.
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