I found this on a different post. Keep in mind that the amp rating on a converter is the DC amp output. It has nothing to do with the AC load capability. The AC load is limited by your shore power cord (usually 15 or 30 amp) and the circuit breakers in the converter. If you have the big plug on your shore power cord it is 30 amps. Some pups have a dedicated 20 amp circuit already wired for air conditioners.You may have a 20 amp outlet somewhere.