For a standard 13,500 BTU unit, the starting surge is often between 50 and 80 amps. Efficiency Ratings and Smart Usage.
Generator Size For RV Air Conditioner: Matching Power To Your Needs
Understanding how much power an RV air conditioner consumes is essential for any traveler who values comfort and electrical independence. This distinction is critical because the surge happens every time the unit cycles on, and it can trip breakers if the power source is undersized.
Most roof-mounted units require a substantial surge of current to start the compressor, followed by a lower draw to run it. Using the formula Watts = Volts x Amps, a unit drawing 30 amps at 120 volts consumes roughly 3,600 watts.
Generator Size For RV Air Conditioner: Matching Power to Your AC's Surge and Run Needs
If you are connected to a 30-amp campground pedestal, you have access to roughly 3,600 watts of power, which is adequate for a single unit. Instead, you estimate the "run time" by assuming the compressor operates 50% to 70% of the time, a concept known as the duty cycle.
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