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Phillip Devoll Phillip Devoll is offline
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Default Why must ground & neutral be seperate in subpanel?


wrote in message
ups.com...
I installed a subpanel when I switched from an electric stove to gas. I
used the 40A 220V breaker that formerly served the stove to power the
sub panel. The cable is #4 with two conductors and a ground. I have 6-
15 amp breakers in the panel providing branch circuits for my kitchen
and other areas of my house. The grounds and neutrals all share the
common bus bar in the sub panel. Everything has worked fine for years
now. Can someone explain why I read that ground and neutral are to be
isolated in the sub panel? Please don't answer because of the NEC since
that does not explain why. What is the risk of my current situation?

Thanks,
Joe


The Reason is that there is current goes through a nuteral and no current
goes through a ground and if the ground and nutural are tied together they
both have current passing through them and the only time that current should
go through a ground is when there is a short or something similar...

but to make thing even moree confusing is then why is the nurural and ground
tied together at the main pannel and that is to bond the nuural to the earth
ground...