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Old 05-31-2012, 09:30 AM   #1
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Question Grounding/Neutral Question

I'm running a sub-panel to a garage. I am coming from the bottom side of the meter socket, which seems to be ok per 230.40 exception 3.

My question is about the Neutral.
Do I hook up the the Neutral to the ground bar of the disconnect/circuit breaker box, with the ground & Neutral that goes to the garage, or do I just hook up the two neutrals and isolate the ground?

*The box is PVC, so the ground terminal strip is all it goes to.

At the sub-panel in the garage where this power is going, I will be isolating the ground and neutral.

I guess my question boils down to; do I do it before this or not?

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Old 05-31-2012, 09:38 AM   #2
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Quote:
Originally Posted by gappvembe View Post
Do I hook up the the Neutral to the ground bar of the disconnect/circuit breaker box, with the ground & Neutral that goes to the garage, or do I just hook up the two neutrals and isolate the ground?
The neutral from the meter socket should land on the neutral bar of the new enclosure not the 'ground bar'.

If the new enclosure does not have a neutral terminal it is not a service rated enclosure and will need to be replaced.

Assuming the new enclosure does have a neutral bar the neutral from the meter should go to as would the neutral and equipment grounding conductor of the feeder to the garage.


By the way, the exceptions allow you to go directly all the way from the meter on the home out to the garage without the need of a garage disconnect at the home. You would also be able to eliminate one conductor if you eliminate the disconnect at the house.

You would treat these service conductors at the garage just like any service.
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Old 05-31-2012, 09:53 AM   #3
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This is a Square D QO-200TRNM: 60AMP Max Rainproof Type 3R Enclosure.
I replaced the Switch, with an actual breaker. I didn't feel comfortable with the wire going out to the garage, buried, with no over-current protection.

I get what you are saying with only using 3 conductors.

Thanks.
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