Should a Subpanel Be Grounded?
3 Answers. the Neutral and Ground Must Not Be Bonded at a Sub-Panel. They Should Only Be Bonded at the Main Service Panel. If You Bond Them Anywhere Other Than...
3 Answers. The neutral and ground MUST NOT be bonded at a sub-panel. They should only be bonded at the main service panel. If you bond them anywhere other than the main service, the neutral return current now has multiple paths, including though your ground wire.
Why don't you ground a subpanel?
With ground and neutral bonded, current can travel on both ground and neutral back to the main panel. If the load becomes unbalanced and ground and neutral are bonded, the current will flow through anything bonded to the sub-panel (enclosure, ground wire, piping, etc.) and back to the main panel. Obvious shock hazard!
Should ground and neutral be separate in subpanel?
When Should Grounds & Neutrals Be Connected in a SubPanel? The answer is never. Grounds and neutrals should only be connected at the last point of disconnect. This would be at main panels only.
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