# What size wire do you need for a 1500 watt heater?

## What size wire do you need for a 1500 watt heater?

(For example: 2-1000W & 1-1500W, 240V heaters = 3500 Watts total. These 3 heaters would require 12/2 wire and a 20 Amp 2-Pole breaker if they were to all be placed on the same circuit. If more heaters are needed either run a new circuit or increase the wire and breaker size to accommodate the load.)

## How many amps does a 1500 watt heater use?

12.5 Amps
A 1500 watt space heater (on high setting) will draw 12.5 Amps. When a few lights or a television are on the same circuit, the 15 Amp limit is quickly reached and the breaker will trip.

How many amps does a 120V heater use?

1 amp
At 120V, 120 watts make 1 amp. That means that 1 amp = 120 watts.

What size wire do I need for a 2000 watt heater?

If your heater has a 2000 watt element, the amp draw can be easily calculated. 2000 / 120 = 16.667 amps. It appears at minimum, a 20 amp circuit will be required. The usual wire size for up to 20 amps is 12 AWG copper wire.

### How many watts can a 12 2 wire handle?

12 gauge wire is rated for 20 amps peak, 16 amps sustained. On a 120 volt circuit, 120 * 16 = 1920 watts. On a 240 volt circuit, 240 * 16 = 3840 watts.

### Is 1500 watts a lot for an outlet?

Know the amount of power you’re placing on an outlet or circuit. Some recommend each outlet or circuit should not exceed 1,500 watts. Major appliances (refrigerators, dryers, washers, stoves, air conditioners, etc.) should be plugged directly into their own wall outlet since they are heavy power users.

Can a 240v heater run on 120V?

Installing a 240-volt heater on a 120-volt circuit is not as big a safety risk, but you will notice that your heater will fail to work most times. When it does run, it will end up giving out much less heat than what you needed for your room and below what you expected.

What size breaker do I need for a 2 1500 watt heater?

A 1500-watt heater on a 120-volt circuit thus needs a breaker of 15.6 amps. Because a 15-amp breaker would be too small, you need a breaker with the next highest rating, which is 20 amps.

## How do I know if my baseboard heater is 120V or 240V?

You can also look into the gang box of your existing thermostat. If you have black and white wires you likely have 120V. If you have black and red wires you likely have 240V.

## How many amps does a 1500 watt heater need?

A 1500-watt heater on a 120-volt circuit thus needs a breaker of 15.6 amps. Because a 15-amp breaker would be too small, you need a breaker with the next highest rating, which is 20 amps.

What do I need to know about a 120 volt heater?

Don, I would need to know the information from the label attached to the heater, particularly: Volts, Watts or Amps, Make and Model Number. The owners manual should also state if the dedicated circuit is 120 volt or 240 volt, along with the Watts or Amps. This will help me a lot. Let me know what you find out. Thanks for the fast response.

How big of a breaker do I need for a 500 watt heater?

If you can plug the heater into a regular wall outlet, the specified voltage should be 120 volts. Thus, the current draw for a 1,500-watt heater is 12.5 amps. Multiply the value for current by 125 percent to determine the size of the breaker you need for the heater. A 1500-watt heater on a 120-volt circuit thus needs a breaker of 15.6 amps.

### How many amps do I need to wire a baseboard heater?

Wiring baseboard heaters in parallel is when you will get into the importance of amps and not exceeding them. It is important not to go over the 80 percent circuit rating. So if you are adding heaters up around a room try not to install more than 3840 watts or 16 amps of the 20 amp circuit. The rule applies to all types of wire sizes.