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mustanglover32's avatar
mustanglover32
Explorer
Feb 14, 2017

Running A/C with extension cord into 20 amp outlet.

Trying to figure out if what I'm trying to run below is moving too close to the limits of a 20 amp 120V outlet and limits of a 12 gauge extension cord that is 25 feet. Trying to run a 135K BTU A/C ...
STBRetired's avatar
STBRetired
Explorer
Feb 14, 2017
Would use a 10 gauge extension cord. You're pretty close to maxed out on the 12. I ran a 13.5K A/C on a 10 gauge 50 foot extension cord to 20 A outlet before I put in my 50 A service. Voltage was down to 112 - 113.

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