wildbillpdx
Solar Enthusiast
I'm trying to wrap my head around the calculations for what size cable I need running from my battery rack to the my inverter. I have an EG4 6000EX which is rated at 6000 watts. I have three EG4 LifePower4 48 volt batteries. Reading online the calculation for cable size seems to be maximum watts (6000) divided by battery voltage (48) which gives me 125 amps. With that calculation various tables show I should use 4 awg cable for 6.3 ft. or 2 awg for 9.9 ft.
Is this calculation correct? The batteries have a 100 amp discharge rate. Reading about series and parallel (the batteries will be parallel) says you combine the amps which would be 300 amps for three batteries. If this is the calculation then it's 2/0 awg for 10 ft.
I'm confused.
Is this calculation correct? The batteries have a 100 amp discharge rate. Reading about series and parallel (the batteries will be parallel) says you combine the amps which would be 300 amps for three batteries. If this is the calculation then it's 2/0 awg for 10 ft.
I'm confused.