Compressor onboard through inverter?

[david_bagshaw]

Can't quite see how the motor is the same? This compressor is 205 litres/min or 7.2 cfm, 8 bar, only data for motor(?) is 2.5Hp, clamp meter showed nearly 14A with a stalled motor trying to start with cylinder full, didn't check while pulling the release valve which some days is the only way to get it start on not great boatyard power.

well it was from machine mart in the middle 80s, being the largest single phase unit available and supplied with a data sheet suggesting it could be used with a 13 amp plug on the end. It also struggles to get going on boat yard power on a cold day. when you think 14A at 240 v =140 A at 24 or 280 at 12, with a 100% efficient inverter( another item made by the flying pig co) the hit on the battery bank is probably not on.

 

[GHA]

Oh well, Order's in, £408 delivered - we'll see

 

[AntarcticPilot]

The system will, as others have noted, be horribly inefficient. Moreover, unless you have a vast battery bank, it will not run for long. A 3000w inverter will take a current of at least 250 amps from your battery at full power, and that's assuming perfect efficiency in the inverter - which you don't get. That'll flatten a battery bank very quickly (mine, at 200aH would be dead in less than half an hour!), and is a higher current than most alternators will supply.