Sub Panel grounding question

Sub-panel Bonding/Grounding Question with Meter Pedestal and 3 Panel Architectur - Community Forums

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I'm installing a 100 amp service to a 100 amp disconnect and then from disconnect using 100 amp sub feed to service

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electrical panel - Flipped off main breaker for repair, unrelated circuit will not come back on - Home Improvement Stack Exchange

I have an electrical issue i can't figure out. i have box with 4 circuits. 1. 230 v. 40 amp breaker, runs air