I have a over the road ac system that is getting harder to maintain. (Mci 92) thinking of dumping it.
I have a new delco 50dn and two heat pumps in the basement. (about 15 amps each)
what kind of inverter should I use to connect to the delco and run the two airs while on the road?
also since I'm a bit of a "sparky-tard".... perhaps someone could tell me how to connect it?
Hey, Chaz, I'm famous for not bein able to figger out how those little electrictron things hold hands but the basic is ~15 amps @ 120 volts is ~1800 watts. But what's required to start the heat pump? If a 2500 watt inverter has enough reserve to start the heat pump, plus enough reserve to handle a little battery charging at the same time, plus losses from heat and just plain electrical inefficiency (mostly heat losses), then you'd need 2500 watt (also called a 2.5 Kilowatt or Kw) inverter for each heat pump.
Some companies offer a 4Kw (4000 watt) inverter for 24v (to match your 50dn) and I don't have a lot of experience with 24v inverters but I'd be *very* surprised if 4000W is enough to usefully carry two 1800 watt heat pumps, even if the starting loads aren't an issue. Maybe it would work, but I'd be surprised if it did; in real life, you just gotta have a buffer above the minimum or nominal computed wattage.
Just a WAIG, you might need one 3Kw inverter for each heat pump (one 3k @ 24v input) to be sure to have enough power in all conditions -- but that's a VERY w-a guess.
Maybe people who know more will comment. BH NC USA
I'm pretty sure that a 50dn will generate enough power to run a nominal 2X1800 watt load but you're talking about pulling some serious power out of your engine to do it.