# Quick Answer: What Size Wire Will A 100 Amp Breaker Accept?

## How many amps can a 60 amp breaker handle?

Rough rule of thumb for residential thermal magnetic circuit breaker on instantaneous operation, 4-10 times the name plate rating 60 amp CB 240 amps-600 amp..

## How far can you run 100 amp wire?

tl;dr. To feed a 100 ampere secondary panel 200 ft. from the main panel, you’ll want to use 1 AWG copper or 2/0 aluminum conductors. This is large enough to safely carry 100 amperes, and to maintain power quality over the distance.

## How much can a 100 amp breaker handle?

100-amp service is generally large enough to power a small- to moderate-sized home’s general branch circuits, plus one or two electric appliances, such as a range, water heater, or clothes dryer. This service may be sufficient for a home under 2,500 square feet if the heating appliances run on gas.

## What size aluminum wire do I need for 100 amp sub panel?

per the National Electrical Code (NFPA70), that would require 1AWG cable (you want 1–3G Cu NM) for Copper which is good for 110A -or- 1/0AWG Al (1/0–3G NM) for Aluminum or Copper clad aluminum which is good for 100A per Table 310.15(B)(16), NM refers to the outer jacket and stands for Non-Metallic.

## What size wire should I use for a 70 amp subpanel?

There is a mininum wire size which is required based on the circuit breaker rating. That size is #4 copper or #2 aluminum. You get this number by using a quality voltage drop calculator by specifying the breaker amperage and a wire length of 1 foot.

## Can you use a 100 amp breaker for a 125 amp sub panel?

A 125 amp rated panel with a 100 amp OCPD as the main and a sub with a 20 or more breakers.

## What wire do I use for a 100 amp sub panel?

This is typically a three-wire cable with three insulated conductors plus a bare copper ground wire. The cable must have a wire gauge sufficient to the amperage of the subpanel—a 100-amp subpanel requires #4 copper wires, for example.

## Can I put a 100 amp breaker in a 100 amp panel?

First the panels you are looking at that are rated 100A simply means you can use them for any application up to 100A. You can for example add a 60A breaker to your existing panel and protect the new subpanel with a 100A rating. It is not so much what the panel is rated as what the protection is rated.

## What size wire do I need for a 60 amp subpanel?

That would be 4-gauge wire. In practice, however, it’s common to wire 60-amp breakers with 6-gauge, 3-conductor wire because an appliance that needs a 60-amp breaker seldom draws the full 60 amps. If you’re installing a 60-amp subpanel, however, it’s best to connect it to the main panel with 4-gauge wire.

## Can I put a 50 amp breaker in a 100 amp panel?

Yes it does exceed the rating of the receptacle so use a 30amp to be code-worthy. The circuit will not draw more than about 22 amps so a dedicated run with #8 romex and a 30 amp breaker, but with a 14R-30 if the 10-30 is obsolete, will be just fine.

## Can you run 220 on 100 amps?

Yes, you can. As long as it 240v with a neutral and ground. The only downside is other loads. If the new load with the other loads goes over 100a, you will trip the breaker.

## Can a 60 amp breaker feed a 100 amp sub panel?

Nope. The breaker protects the wire leading to that subpanel. The “100 amp” rating of the subpanel is the max rating that you can feed it at.

## How many circuits can you put in a 100 amp panel?

20 circuitsIt can hold 16 full size breakers and 4 twins breakers for a total of 24 circuits. Many 100 amp panels are simply 20 circuits.

## What does a double 100 amp breaker mean?

It depends on what you mean when you say it has double 100 amp breakers. If you mean the breaker has 2 handles that are tied together and both handles say 100 amps then no it is only a 100 amp service. If you see 4 handles tied together then it would most likely be 200 amps.

## Can 8 gauge wire handle 50 amps?

8 AWG may carry a maximum of 70 Amps in free air, or 50 Amps as part of a 3 conductor cable.