Scene. Separate garage, 125 amp meter main. Four wires to the house, not connected in anyway, Service Entrance, establish ground and tie both neutrals and grounding electrode system together, or, Sub-panel, isolate fourth wire and neutral? I prefer, always treat the new building as service entrance.
service equipment versus subpanel
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hbiss
EC, New York NEC: 2017
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- Little Falls, New York NEC: 2017
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- EC
Re: service equipment versus subpanel
Not following your "scene". Garage is separate (detached) from the house? Service comes into the house? Four wires to the house from where? What new building?
If this is a detached building, service is in main house, I always run 4 wire to the detached building and install a sub panel with a main breaker and a ground rod.
-Hal
Not following your "scene". Garage is separate (detached) from the house? Service comes into the house? Four wires to the house from where? What new building?
If this is a detached building, service is in main house, I always run 4 wire to the detached building and install a sub panel with a main breaker and a ground rod.
-Hal
Re: service equipment versus subpanel
Attach the garage to the house with a two by four and the panel must be fed with four wires.
Leave it detached, and the house can be fed with three wires with no breaker ahead of the service entrance cable to the house.
Also you can feed the panel in the house with a branch breaker from the garage. Four wires or three will work.
Two ground electrodes may be installed at both locations. Ground electrodes do not have to be bonded as one, unless a two by four is connecting the two buildings.
This ridiculous situation is why I maintain there is no such thing as a sub panel. All loadcenters supplying a premises wiring system are service panels, regardless of location.
This is assuming the service hits the garage first, if not everything is in reverse.
Ain't electricity fascinating?
[ March 01, 2004, 02:15 PM: Message edited by: bennie ]
Attach the garage to the house with a two by four and the panel must be fed with four wires.
Leave it detached, and the house can be fed with three wires with no breaker ahead of the service entrance cable to the house.
Also you can feed the panel in the house with a branch breaker from the garage. Four wires or three will work.
Two ground electrodes may be installed at both locations. Ground electrodes do not have to be bonded as one, unless a two by four is connecting the two buildings.
This ridiculous situation is why I maintain there is no such thing as a sub panel. All loadcenters supplying a premises wiring system are service panels, regardless of location.
This is assuming the service hits the garage first, if not everything is in reverse.
Ain't electricity fascinating?
[ March 01, 2004, 02:15 PM: Message edited by: bennie ]
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