16 сент. 2015 г. · If you want conduit, use 2" with four conductors (2/0-2/0-2/0-4 Al THHN) or 1 1/2" conduit with four conductors (1-1-1-6 Cu THHN).

24 сент. 2019 г. · At 125 amps you'd normally use 1 gauge THHN which can carry 130 amps but based on distance you're going to go up a size to minimize voltage loss ...

15 мар. 2021 г. · You could use a 1/0 SER cable. It is rated for 120 amps, but since they do not make a 120 amp breaker, you are allowed to size up to the next available size.

23 мая 2023 г. · youll need at least 2/0 AL for 125a before voltage drop calcs.... there is a tutorial on wire sizing on the electrical FAQ sticky

26 апр. 2020 г. · If I should be sizing to 125A, then it would be 1AWG Copper (1-1-1-3 SER) or 1/0 Aluminum (1/0-1/0-1/0-2 SER).

29 мар. 2018 г. · Since there are no 135A breakers you are allowed to use the next closest larger size, which is 150A, but your load must be below 135 amps.

25 сент. 2016 г. · Are the three wires (2 AWG Copper) the right size for the 125' run (as I think it is the largest wire that a QO 90Amp breaker will accept)?

23 июн. 2019 г. · 2 gauge aluminum will be good to 90A. 1/0 is right for 125A you'll need two ground rods, and it will have to be a 4-wire feeder as well.

7 мар. 2011 г. · Bare minimum is 1 1/4" but if 2" is used it will be easier to pull then a smaller size w/ a limited increase in cost. As for wire size, #3 AWG copper or #1 AWG ...

19 февр. 2014 г. · You only can if the panel says you can. The maximum branch circuit breaker rating will be on the label inside the panel.