jim123
Member
- Location
- new castle,de
100 amp sub panel. Is this right? Three #3’s and one # 8 for ground. All copper , thwn for underground .
Wire sizing
- Thread starter jim123
- Start date
- Status
Greentagger
Senior Member
- Location
- Texas
- Occupation
- Master Electrician, Electrical Inspector
Yes . Single phase and voltage drop has been accounted for?
jim123
Member
- Location
- new castle,de
Yes single phase and only about 50’
Greentagger
Senior Member
- Location
- Texas
- Occupation
- Master Electrician, Electrical Inspector
acin
Senior Member
- Location
- pacific grove california
- Occupation
- general building contractor est.1984 . C 10 elec. lic.as of 8 / 7/ 2020
Could the grounded cndtr be 8 cu? 102c1
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Grounded conductor can be smaller than 3 AWG. Larger of 250.122 or 250.24 C. For services some would say 2 trade sizes smaller than ungrounded conductors
Carultch
Senior Member
- Location
- Massachusetts
The grounded conductor (aka neutral) needs to be sized for the calculated neutral load. If the calculated neutral load isn't significant enough to govern its size, the minimum size is the EGC size per 250.122 when it is a feeder, or when it is with service conductors ahead of the main disconnect, sized per 250.54(C).
- Status