busbars in main service panels

Originally Posted By: ddivito
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I saw a main service panel today that had a neutral/bare grounding wires on one busbar that was properly bonded to the enclosure. There was also a busbar on the enclosure that had a few bare grounding wires on it as well. Does a ground connecton made through the enclosure back through the bonding screw to the grounding electrode work well enough?


Originally Posted By: jpope
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A bonding strap or bar should be used to bond bus bars.



Jeff Pope


JPI Home Inspection Service


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Originally Posted By: ddivito
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there was proper bonding


Originally Posted By: jpope
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Bus to bus, or bus to box?



Jeff Pope


JPI Home Inspection Service


“At JPI, we’ll help you look better”


(661) 212-0738

Originally Posted By: ddivito
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proper bonding is bus to box which it was, but that is not the question


Originally Posted By: phinsperger
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jpope wrote:
Bus to bus, or bus to box?


Dennis, I must have also mis-interpreted your question because I thought as Jeff did. Can you decribe it again a bit differently?


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Originally Posted By: Greg Fretwell
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ddivito wrote:
I saw a main service panel today that had a neutral/bare grounding wires on one busbar that was properly bonded to the enclosure. There was also a busbar on the enclosure that had a few bare grounding wires on it as well. Does a ground connecton made through the enclosure back through the bonding screw to the grounding electrode work well enough?



U/L says it works but I like a fat wire (250.66 size) between the bus with the grounded service connector and the ground bus for my main bonding jumper. I have even heard it said that the attaching screws can't be the only way you bond a grounding bus but the manufacturer says it is OK.
Bonding the neutral bus to the can is either going to be a strap or a green hex head screw.
If you also run a wire to the grounding bus you triple the contact points to the can.
This still has to be a suggestion, not "code"