Rig Ready Free tools
Pick your hookup and tick what's running at the same time. You'll see the total watts against what the pedestal can supply.
Wattages are typical running loads, so check the labels on your own appliances. Air conditioners briefly draw 2 to 3 times their running load at start-up.
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A 30 amp RV service supplies about 3,600 watts (30 amps × 120 volts). A 50 amp RV service has two 50 amp legs, about 12,000 watts in total, which is why 50 amp rigs can run two air conditioners. A standard 15 or 20 amp household outlet gives about 1,800 to 2,400 watts: enough for the fridge, lights and charging, not the AC.
The usual culprits are the air conditioner plus a microwave, electric water heater or hair dryer at the same time. Hidden loads add up too: the battery charger can pull several hundred watts after a night of boondocking.
Run one big load at a time, switch the water heater and fridge to propane while the AC runs, and consider a soft-start kit for the AC. A surge protector or EMS protects the rig from bad pedestals.
