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Trent Tarter

Added bus bar

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This small 100 amp service panel has a bus bar that's been added. The new bus bar is connected directly to the enclosure. with no jumper wire.  I am trying to figure out if this would require a jumper wire from main bus and/or should it have plastic feet. 

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Hi Trent. If only the grounding wires went to that extra bus, it would be good to go. That is how it is done here, ground wires to the back of the panel. However, I'd prefer to see all the neutrals going only to the neutral bus, the most direct route back to the source.

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As John said, if only grounding wires landed on the bar, it would require no jumper. 

However, I see one neutral wire on it. Per 200.2(B), you're not supposed to rely on the enclosure to carry the neutral current. So they should either limit that bar to grounding wires only or run a jumper to it. 

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