Can you run a window AC unit with an extension cord?

A window air conditioner should be installed close enough to an outlet to allow the cord to reach, but when you need immediate relief from the heat, you can use a heavy-duty extension cord for your new appliance.

Can you use a heavy-duty extension cord with an air conditioner?





Extension cords for PCs, washing machines, and other appliances are not fit for AC. You need a heavy-duty extension cord that can carry the high current. A window AC typically uses a 12-gauge wire that can carry as much as twenty amperes of current.

Can you plug a window air conditioner into a regular outlet?

There is no issue if you plug it in a regular power outlet. However, PACs require more electricity. If you plug it in a regular outlet, you might cause a short circuit in the room.

Which is better 10 gauge or 12 gauge extension cord?

Round down = 10 Gauge. Most devices will do fine with 12 gauge extension cords. Power hungry devices such as lawnmowers, heavy machines, require a lower gauge such as 10AWG. Keep in mind, the lower the gauge means the thicker the cord.

What size extension cord do I need for AC?

Extension cords for air conditioners are usually a minimum of 14 gauge, which is considered medium duty. The tricky thing with gauges is that lower-gauged extension cords can handle more amps (yes, you read that right!)

How many watts can a 12 gauge extension cord handle?





Matching Extension Cord to Load

Extension Cord Wire Gauges, Amperage Rating, and Wattage
#18 5 Amps 600 Watts
#16 7 Amps 840 Watts
#14 12 Amps 1,440 Watts
#12 16 Amps 1,920 Watts

Which is better 12 or 16 gauge extension cord?

When using 100 feet extension cords, you’ll need a: 16 Gauge for 1-10 Amps. 14 Gauge for 11-13 Amps. 12 Gauge for 14-15 Amps.

How many amps does a 5000 BTU air conditioner use?

Example 1: How many amps does a 5000 btu air conditioner draw? Most 5000 BTU ACs draw about 4.35 amps.

What does SJTW mean on an extension cord?

Junior Hard Service Thermoplastic



Thermoplastic (PVC) insulated conductors and jacket. Indoor use; tools and equipment, lights, power extensions. SJTW. Junior Hard Service Thermoplastic, Outdoor Rated. Moisture- and sunlight-resistant thermoplastic (PVC) insulated conductors and jacket.

Is a 12 gauge extension cord heavy duty?

A 10- to 12-gauge cord is for heavy and extra heavy duty applications (chainsaws, circular saws, shop vacs, air compressors, etc.). These are the heavier weight, and heavier duty cords designed for continual use on job sites, even in extreme weather, and are suitable for very high-amperage tools.

How many amps can 10 gauge wire handle?

30 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].”

How many amps is #12 wire good for?

Size & AMP Ratings

NM, TW, & UF WIRE (Copper Conductor) SE CABLE (Copper Conductor)
12 AWG – 20 AMPS 6 AWG – 65 AMPS
10 AWG – 30 AMPS 4 AWG – 85 AMPS
8 AWG – 40 AMPS 2 AWG – 115 AMPS
6 AWG – 55 AMPS 1 AWG – 130 AMPS

How many amps can a 12 3 wire handle?

20 Amps

Rated for 20 Amps, 300 max volts.

How many amps can 12 gauge wire handle at 12 volts?



Maximum current (amps) in a 12V electrical circuit vs. size (AWG) and length of wire.

American Wire Gauge (#AWG)
Length (feet) Maximum Current (amps)
30 12 8
40 12 6
50 10 6

Can 12 AWG handle 30 amps?

Can You Use a 30-Amp Breaker on 12-Gauge Wire? You should not use a 30-amp circuit breaker on a 12-gauge wire. The circuit breaker installed on a circuit is of a specific size to protect a certain wire gauge. A larger breaker on a thinner wire will allow more current over the wire before tripping.

Can I use 12 gauge wire on a 15 amp circuit?

With 12 gauge, you need to use the screw terminals. You can use 15 amp outlets on either 15 or 20 amp circuits. 12 gauge wire is the minimum for 20 amp circuits. 14 gauge wire is the minimum for 15 amp circuits.

How many amps can a 12 2 wire handle?

Maximum Breaker Size is 30 amps. You can use a 20 amp circuit breaker with 12/2 Romex as 12/2 wire is rated for 20 amps. Always remember THE BREAKER IS THERE TO PROTECT THE WIRE NOT THE APPLIANCE !!! You can always oversize the wire , if using a 20 DPST breaker you can use 10/2 if needed…

Can 12 AWG handle 20 amps?



The next size larger is 12-gauge wire, which can carry up to 20 Amps. The wire size that has been chosen affects the Amp rating of a circuit breaker. A 20-amp breaker is not allowed to run circuits with 14-gauge wires.

Can I use 10 gauge wire for outlets?

Yes, you can use 10 AWG copper conductors with a 20 ampere breaker. The smallest size conductors you could use with a 20 ampere breaker, are 12 AWG copper conductors. There’s no problem using larger conductors, other than cost to you, and difficulties associated with working with thicker conductors.