Truck Camper adding inverter
Would like to hear from people on there recent experience on adding an inverter. My goal. To power a 1350 watt microwave for 10 minutes at max power. I have two group 27 batteries and a 120 watt ...
Forum Discussion
If a microwave uses 1500 watts it is using about 125AH. Or about 21 AH of battery power for 10 minutes. (not counting line and inverter losses) This isn't an issue if you have 100AH available (full battery in your case).
The issue will most likely be that despite cable sizes being correct your voltage sag will be over 1 volt with your battery bank and probably down to a point the troubles the inverter trying to make that much momentary power. When you dip down to 11v range inverters will typically shut down or not deliver adequate power. 1 minute or 10 the voltage drop will make it tough on the battery and inverter, if it will perform at all.
Burning man makes a very good point regarding solar. If you are supplementing the battery with solar that enters the equation. But...
IMO sizing inverter and battery for high load applications should be done without calculating solar input for momentary loads. For one, the solar you have mentioned is a small fraction of the microwave load, two solar is a battery charging mechanism not a constant load output.
The issue will most likely be that despite cable sizes being correct your voltage sag will be over 1 volt with your battery bank and probably down to a point the troubles the inverter trying to make that much momentary power. When you dip down to 11v range inverters will typically shut down or not deliver adequate power. 1 minute or 10 the voltage drop will make it tough on the battery and inverter, if it will perform at all.
Burning man makes a very good point regarding solar. If you are supplementing the battery with solar that enters the equation. But...
IMO sizing inverter and battery for high load applications should be done without calculating solar input for momentary loads. For one, the solar you have mentioned is a small fraction of the microwave load, two solar is a battery charging mechanism not a constant load output.
