jar546
Forum Coordinator
So here we go. Hopefully we will all learn something or at least refresh our memories with this situation.
Let's start with this. Below is the photo of a combo 120/240v, 200A meter and disconnect that will be mounted on a single-family residence. Let's say this gets fed from above with 4/0 aluminum SE cable. The POCO will tie into the SE cable above. The main then feeds to the garage where the main panel (sub-feed) is supplying all of the circuits to this single-family residence.
Questions:
1) What are the minimum size copper conductors that are allowed to feed the main panel (sub-feed) in the garage IF all of the circuits for the entire house originate from that panel?
2) What are the minimum size copper conductors that are allowed to feed the main panel (sub-feed) in the garage IF most of the circuits are in the sub-fed main panel but there is a branch circuit outside for the AC that originates in the exterior combo-meter panel?
What say thee?
Let's start with this. Below is the photo of a combo 120/240v, 200A meter and disconnect that will be mounted on a single-family residence. Let's say this gets fed from above with 4/0 aluminum SE cable. The POCO will tie into the SE cable above. The main then feeds to the garage where the main panel (sub-feed) is supplying all of the circuits to this single-family residence.
Questions:
1) What are the minimum size copper conductors that are allowed to feed the main panel (sub-feed) in the garage IF all of the circuits for the entire house originate from that panel?
2) What are the minimum size copper conductors that are allowed to feed the main panel (sub-feed) in the garage IF most of the circuits are in the sub-fed main panel but there is a branch circuit outside for the AC that originates in the exterior combo-meter panel?
What say thee?