**What size breaker does a space heater need? 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. Because a 15-amp breaker would be too small, you need a breaker with the next highest rating, which is 20 amps.**

**How many heaters can you have on a 20 amp breaker?** A 20-amp breaker can support any combination of heaters up to a total of 3,840 watts. For example, using a single thermostat, the breaker could support two 1500-watt heaters or three 1000-watt heaters.

**Can I run a space heater on a 15 amp circuit?** For example, a bedroom is typically on a 15 Amp circuit breaker. A 1500 watt space heater (on high setting) will draw 12.5 Amps. Power strips, power taps, and even plug-in type air fresheners should not be used with space heaters. Space heaters should be plugged directly into a sound 120 volt wall outlet.

**What size breaker 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.

## What size breaker does a space heater need? – Related Questions

### What size breaker do I need for a 240 volt heater?

Adding a 240-volt baseboard heater usually requires a new 20- or 30-amp double-pole circuit breaker and new circuit wiring to supply one or more heater units. This is a dedicated circuit that serves only the heater.

### How many watts can I run off a 20 amp breaker?

A 20-amp breaker can support up to 2,400 watts on a single circuit. The safe maximum for a 20-amp circuit is 1,920 watts, but circuits should not be loaded to more than 80 percent of their maximum capacity.

### What size breaker do I need for a 15kw heater?

15kw is better than 60 Amps. If you are positive that is indeed #4 cable. you must use a sub panel. The heat probably requires an 80A breaker and the air handler would need a 15A circuit.

### Why is my space heater tripping the breaker?

Common Reasons Why a Heater Might Trip the Breaker

The most likely reason is that the heater is drawing too much current and overheating that circuit. This can be dangerous, so the breaker shuts off to protect you. A second reason is that you might have too many other appliances on the circuit.

### Do I need a dedicated circuit for a space heater?

Dedicated circuits are required for major appliances by the National Electrical Code. Portable space heaters can overload circuits and cause breakers to trip. If your breakers trip when your heater is in use, then we recommend installing a dedicated circuit to avoid risk of electrical fire.

### What size breaker do I need for a 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 many amps does a 2000w heater draw?

2000 watt is equivalent to 8.3 Amps.

### How many amps is 4000 watts at 240 volts?

If you have a heater that uses a total of 4000 watts in a 240 volt connection, you’ll need a minimum of 20 Amps.

### Can a 240V heater run on 120V?

Specifically, a 240-volt, 2,000-watt heater will use up 8.3 amperes of current but a 120-volt, 2,000-watt device eats up 16.6 amps. 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.

### What wire do I use for a 30 amp breaker?

RULES OF THUMB. Many techs will repeat these rules of thumb and rely on them in all circumstances: “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 can you run on 20 amps?

The 20-Amp Circuit

A typical circuit of 20 amperes (amp) is enough to power a bedroom or two. It is a common amp rating used in devices such as outlets and overhead lights, along with a 15-amp circuit. Different amps suit different wire sizes. The 15-amp Circuit, for example, is compatible with a 14-gauge wire.

### How many appliances can be on a 20 amp circuit?

One rule of thumb is to assign a maximum draw of 1.5 Amp to each receptacle, which will allow for 10 receptacle on a 20-amp circuit.

### How many items can be on a 20 amp circuit?

How many outlets can be put on a 20 amp circuit safely? A rule of thumb is to factor a maximum draw of 1.5 amps to each receptacle, which means you can put 10 outlets on a 20-amp circuit.

### How many amps is a 10kw heat strip?

10kw thermal bands are often 9.6 kw. Fixed space heating equipment are assumed to have a continuous charge, so without any other charge considered, there are 9,6240 x 1,25 or 50 amps.

### What size breaker do I need for a 10000 watt heater?

10,000 Watts divided by 240 Volts equals 41.6 Amps. This unit requires a 50 Amp breaker.

### Can a space heater trip a breaker?

Yet, just like most other electric appliances, they may also prove to be harmful to your home or to you if handled carelessly. A common problem that many owners report is that their space heater keeps tripping the breaker. This can not only be annoying but can even be dangerous.

### Why can’t you plug a space heater into a power strip?

Space heaters must be plugged directly into a wall outlet, which can handle a higher wattage, and should be the only item plugged into that wall outlet. The Electrical Safety Foundation International says space heaters can overheat a power strip, as well as an extension cord, and potentially cause a fire.

### Are all 1500 watt heaters the same?

An electric space heater rated at 1,500 watts will use the same amount of power (1,500 watts), producing the same amount of heat regardless of what you pay for it. An electric space heater rated at 1,500 watts will put out the same amount of heat regardless what you pay for it.

### How many amps does a 3kw heater use?

3kw is just over 13 amp 3000/230 = 13.04 amps and given the circuit is a radial fed with a 16 amp breaker with nothing else on it, the fcu is doing nothing of use and is un-necessary. Also adding 3kw heaters onto a ring will likely overload it.

### How many amps does a hair dryer?

Hair dryer wattage levels

Many hair dryers require about 1,875 watts, or 15 amps, of power. Because of this, it’s much easier to blow a circuit just by plugging your hair dryer in. Be aware of how many amps the circuits in your house can handle before you plug in too many devices to one outlet.

### What size breaker do I need for 4500 watts?

30 Amp dual pole breaker and 10 Gage wire size are required for 4500 watt elements.