I know this has been covered many times but I'm having trouble using the search menu with my phone after a update. So I'm just gonna ask im planing to put either a 75 or 100 amp sub panel in the far corner of my garage. It's about 115-120ft run breaker to breaker. I know that i need three conductor and that i need to separate or i believe "float" the ground from the neutral Two questions what size aluminum would i need for each option and is ser cable allowed to be used in this application ? If not what should be used. Thanks in advance
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Sub panel
- Thread starter Jking24
- Start date
pattenp
Well-known member
SER can be used. 2-2-2-4 AL for up to 90A or 1-1-1-3 AL for up to 100A. There is no 75A breaker.
Last edited:
Attached? If so SER is great. Needs 4 wires total, 2 hots, neutral and ground. SER has all 4
The garage is detached but this will be from the main 200 amp panel to the opposite inside corner. Just to ber clear ser could be run with no conduit correct ?
SER can be used. 2-2-2-4 AL for up to 90A or 1-1-1-3 AL for up to 100A. There is no 75A breaker.
Thankyou for the info i knew their isnt a 75 my mind is just a little scattered right now lol
The garage is detached but this will be from the main 200 amp panel to the opposite inside corner. Just to ber clear ser could be run with no conduit correct ?
If the run goes underground then ser will not be an option at least for that portion. Ser can be run outdoors but never underground even in a conduit.
If the run goes underground then ser will not be an option at least for that portion. Ser can be run outdoors but never underground even in a conduit.
Entire run will be inside leaving main panel going up inside of wall across rafters then down the other wall into sub panel
Entire run will be inside leaving main panel going up inside of wall across rafters then down the other wall into sub panel
Got it. Service panel is already in the garage. Ser is a good choice. No conduit needed it installs like Romex for the most part.
78SC4X4
Well-known member
I know this has been covered many times but I'm having trouble using the search menu with my phone after a update. So I'm just gonna ask im planing to put either a 75 or 100 amp sub panel in the far corner of my garage. It's about 115-120ft run breaker to breaker. I know that i need three conductor and that i need to separate or i believe "float" the ground from the neutral Two questions what size aluminum would i need for each option and is ser cable allowed to be used in this application ? If not what should be used. Thanks in advance
In case you haven't seen it, post 3 of the Electrical FAQ sticky shows the diagram of what you are describing.
https://www.garagejournal.com/forum/showthread.php?t=356460