13500 A/C on 2000 watt inverter?
My brother is having issues with a 13500 btu A/C starting while using a 2000 watt inverter. This is installed on a cake delivery van. The fan motor will turn on but not the compressor. He is using ...
Forum Discussion
do you have the model number and specs for the A/C unit
my old roof top a/c's draw about 12~13 amps at 115v
thats 120amps into the inverter, not counting efficiency loss
round that off to 130amps load
unless he has a really good, ambulance/firetruck grade alternator it is NOT going to work
also the LRA "lock rotor amps" for my a/c compressor is 54 amps
to reach that with an inverter means a 540amp input surge
he needs a smaller a/c, and a bigger inverter, and better alternator
run the smaller a/c full blast, NOT cycling on off, the restart cycle on a hot a/c is a real deal breaker for him
the inverter should be 'old school' with a big transformer in it
the transformer/inductor provides a surge ability for starting motors that you can't get with small light weight cheapo "chopper circuit" inverters
even if its pure sine wave, to start motors you need surge capacity
my old roof top a/c's draw about 12~13 amps at 115v
thats 120amps into the inverter, not counting efficiency loss
round that off to 130amps load
unless he has a really good, ambulance/firetruck grade alternator it is NOT going to work
also the LRA "lock rotor amps" for my a/c compressor is 54 amps
to reach that with an inverter means a 540amp input surge
he needs a smaller a/c, and a bigger inverter, and better alternator
run the smaller a/c full blast, NOT cycling on off, the restart cycle on a hot a/c is a real deal breaker for him
the inverter should be 'old school' with a big transformer in it
the transformer/inductor provides a surge ability for starting motors that you can't get with small light weight cheapo "chopper circuit" inverters
even if its pure sine wave, to start motors you need surge capacity
