Originally posted by sensij
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The only thing in the system is the battery itself that is capable of generating enough current to burn wires. The only unprotected wiring is between the CC and battery term post. Assuming he has a listed CC, the charge controller internal fuse will protect the panel wiring from the battery. At 12 volts electrocution is not an issue, thus why no ground is required.
My POV is if you do not have to ground the chassis or the system, DON'T! Grounding a system actually makes it dangerous and prone to unnecessary outages. That is why industry especially utilities, refineries, pharmaceutical, extrusion, or any process where unnecessary outages cannot be tolerated use Delta configuration. If there is a line fault, an alarm goes off to alert maintenance personal to schedule a controlled shutdown for repairs.
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