romex cable

kgh60

is 2/3 romex ok for a 100 amp. sub-panel. also is the ground wire sufficient.

Scuba_Dave

Where are you located ?
How far to the sub panel ?

a7ecorsair

A sub panel requires the two hots, a neutral, and a ground. Is the sub in the same building as the main or will you be burying the cable underground? Do you already have the cable and if so, what is actually printed on the cable for a wire type? You asked if the ground wire is sufficient but you don't say what size the ground is. 2/3 wire tells me you have three #2 wires and no ground.

kgh60

is 2/3 romex & its ground sufficient for a 100 amp. sub-panel . the panel is 40 feet away from the main panel. also it is in the same building. from n.y.

Jim Port

Copper or aluminum?

__________________
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.

brric

Cu or AL conductors?

Damn I'm slow.

2-2-2-4 Al SER 75amps
1-1-1-3 Al SER 85 amps
1/0-1/0-1/0-2 Al SER 100 amps

kgh60

the romex cable 2/3 is copper

brric

95 amps

kgh60

do you know if the 2/3 romex copper not ser cable is ok for 100 amp. sub - panel.

brric

Should be if it is installed in a dry location.

What brand is it?

kgh60

if i us a 90 amp. 2-pole breaker on the 2/3 romex will that be sufficient, for a sub-panel

brric

If your total load doesn't exceed 90 amps.

kgh60

it is in a dry location,i don`t know the brand.

the ground wire in 2/3 romex is a#8 wire.

brric

If it's romex it should be marked on the sheathing.

kgh60

it is a #8 ground wire. is it sufficient for the sub-panel.