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# Can 8-gauge wire handle 80 amps?

## Can 8-gauge wire handle 80 amps?

“Twelve-gauge wire is good for 20 amps, 10-gauge wire is good for 30 amps, 8-gauge is good for 40 amps, and 6-gauge is good for 55 amps,” and “The circuit breaker or fuse is always sized to protect the conductor [wire].”

What size wire is needed for 75 amps?

Wire Size and Amp Ratings

Wire Size 75°C (167°F)
AWG (mm²) Aluminum
6 (13.3) 50
4 (21.2) 65
3 (26.7) 75

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

2 Answers. #3 copper will provide 70 amps at 240v with a 2.74% voltage drop or #1 aluminum at 2.83% drop at 200 feet.

How many amps will 12/3 wire carry?

20 Amps
50 Foot of 12/3 SJOOW bulk electrical cable. Rated for 20 Amps, 300 max volts.

#### What size breaker do I need for 12 3 wire?

The rule is Max. 15 amp breaker for #14 wire, 20 amps max for #12, and 30 amps for #10.

How do you calculate conductor size?

The formula for calculating the size of conductors for direct currents, where the length, load, and loss in volts are given, is as follows: The size of conductor (in circular mils ) is equal to the current multiplied by the distance (one way) multiplied by 21.6, divided by the loss in volts; or, CM= C X D X 21.6.(1)

## What wire size to use?

Common sizes include 14-, 12-, 10-, 8-, 6-, and 2-gauge wire. The size of the wire dictates how much current can safely pass through the wire. Electrical current is measured in ampacity , and each wire gauge has a maximum safe carrying capacity.

What is 10 gauge wire rated?

NEC 10-gauge copper wire has a rating of 30 amps. 10-gauge solid copper wire in general has a resistance of almost exactly 1 ohm per 1000 feet. The rating is limited by how much heat the insulation was designed to withstand. NEC 60/75/90 deg C rated insulated wire is rated for 30/35/40 amps respectfully.

### What is the amp rating of 18 gauge wire?

Lamp Cord Requirements. The 18-gauge wire inside a lamp cord is rated for a maximum current draw of about 5 amps. That’s more than enough for a typical 120-volt lightbulb — or even several of them.