Heavy Duty Inverter/Charger 1000 Watt Weatherproof Owner's Guide RM1012

Planning for AC loads
2–5
Factors
affecting load
Consider these factors when you are calculating loads:
Loads that exceed 1000 watts may be run for a short time (less than
five minutes)
Loads which run continuously, (reading light, TV, computer) should
not exceed more than 1000 watts in total
Poor battery condition, low battery capacity, low battery temperature,
and high ambient temperature will shorten the operating times listed
in the table
The presence of DC loads will reduce the operating times