I want to make sure I'm sizing wires and breakers/fuses correctly...
If I can pull 3000w at 110vac from my inverter, then my appliance is using 27.3amps (3000/110 ignoring losses).
If that same inverter load is powered from a 24v DC battery, then I'm using 125amps (3000/24).
Fusing the positive lead from that battery would need to be ~125% or about 150a (if I can surge to 6000w then 6000/24*1.25 or a huge 312.5a breaker! In that case, since I will use 00 wire, size for wire and not load.
If I follow the watts, then I should be okay. Right? Seems counterintuitive that the same 3000w requires much smaller wire on AC than DC but it's the amps, I guess.
If I can pull 3000w at 110vac from my inverter, then my appliance is using 27.3amps (3000/110 ignoring losses).
If that same inverter load is powered from a 24v DC battery, then I'm using 125amps (3000/24).
Fusing the positive lead from that battery would need to be ~125% or about 150a (if I can surge to 6000w then 6000/24*1.25 or a huge 312.5a breaker! In that case, since I will use 00 wire, size for wire and not load.
If I follow the watts, then I should be okay. Right? Seems counterintuitive that the same 3000w requires much smaller wire on AC than DC but it's the amps, I guess.