What size copper wire do I need for 100 amp service?
What size copper wire do I need for 100 amp service?
You need a 3-3-3-5 copper SER cable to carry 100 amps (that’s three #3 gauge for the two hot wires and the neutral and a #5 gauge for the ground).
What size Thhn wire is good for 100 amps?
When it comes to the lines connecting master and secondary panels, where the line will carry as much as a full 100 amps, use a 2-gauge non-metallic sheathed electrical cable. The cable must contain one or two hot wires depending on your needs, one neutral wire, and one ground wire. Each wire should be 2-gauge in size.
What is the minimum size of copper grounding conductor for a 100 amp load supply?
| GROUNDING ELECTRODE CONDUCTOR SIZING (Table 250.66) | ||
|---|---|---|
| Size of Main Panel | Copper Conductors | Aluminum or Copper-Clad Aluminum |
| 100 Amps | #8 AWG | #6 AWG |
| 125 Amps | #8 AWG | #6 AWG |
| 150 Amps | #6 AWG | #4 AWG |
What size ground do you need for a 600 amp service?
MIN. SIZE OF EQUIPMENT GROUNDING CONDUCTORS (EGC) for Grounding Raceway & Equipment
| Rating or setting of Automatic Overcurrent Device (OCPD) in Circuit ahead of Equipment [i.e Circuit Breaker]. Not exceeding (Amps) | Size (AWG or kcmil) | |
|---|---|---|
| 500 | 2 | 1/0 |
| 600 | 1 | 2/0 |
| 800 | 1/0 | 3/0 |
| 1000 | 2/0 | 4/0 |
Can I put a 60 amp main breaker in a 100 Amp panel?
You can use the 100 amp panel off a 60 amp breaker if you determine that it is adequate, but I would suggest that in sizing your feeder wires and conduit it would be a good idea to size them to accomodate 100 amps.
Can I run a 60 amp sub panel off a 100 Amp service?
You can feed a 100 Amp panel with a 60 Amp breaker. Keep in mind that the sub panel needs to be rated above the breaker size.
How many amps does a THHN sub panel have?
No good. #4 THHN is only rated for 85 amps at 75° C. This would be for MC cable or conductors in a raceway. SE cable in thermal insulation or NM cable would be rated at 60° C which has an ampacity of 70 amps. kwood (KEVIN WOOD, CMI) March 2, 2012, 11:38pm #3
What kind of wire for 100 amp sub panel?
What Size Wire for 100 Amp Sub-Panel? 1 3 gauge THHN Copper Wire 2 Needs to be buried in a conduit 3 most popular
What should voltage drop be for 2-100 AMP sub-panels?
Running 2 – 100 amp sub-panels you should run #3 THHN wire to each panel with a 100 amp breaker to feed each one. The NEC recommends 3% voltage drop for either the feeder or the branch circuit and 5% total for both.
What is the right wire size for 100 amp service 150 feet distance?
What is the right wire size for 100 Amp service 150 feet distance? You should get 2/0 AWG Copper wire or 4/0 AWG Aluminum wire for single-phase circuits. And, 1/0 AWG Copper wire or 3/0 AWG Aluminum wire if you have three-phase circuits. For these wires, the average voltage drop should be 3%.
No good. #4 THHN is only rated for 85 amps at 75° C. This would be for MC cable or conductors in a raceway. SE cable in thermal insulation or NM cable would be rated at 60° C which has an ampacity of 70 amps. kwood (KEVIN WOOD, CMI) March 2, 2012, 11:38pm #3
What Size Wire for 100 Amp Sub-Panel? 1 3 gauge THHN Copper Wire 2 Needs to be buried in a conduit 3 most popular
Running 2 – 100 amp sub-panels you should run #3 THHN wire to each panel with a 100 amp breaker to feed each one. The NEC recommends 3% voltage drop for either the feeder or the branch circuit and 5% total for both.
How big of a wire do I need for 100 amp?
The rule of thumb for 100 amp is that you go with a wire size gauge 1. 125 amp requires a wire size 2/0. For 150 amp, the right wire size is 3/0. For 200 amp, you will want a wire size 250 kcmil. For 300 amp, the right wire size is 500 kcmil. 400 amp service requires a wire size of 1,000 kcmil.