750w 'low' electric heater running equates to about 6.25amps each, leaving another 13.75amps for the rest of the circuit
two on the same circuit running would still only be about 12.5amps total, still leaving available amps for other smaller items, like TVs, receivers, device chargers, etc, none of which use too much.
now, since you are a 30amp RV, your TOTAL usage can't exceed that, even if the individual circuits themselves can - make sure you are aware of your other silent 'users', such as the convert's battery charger, the electric water heater element, etc.
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