An Air Compressor that Compresses Oil

[brightspark]

Hi all,

Hope everyone has had a great start to the new year!

I've only just got the wiring upgraded in my garage to 32A and had a chance to try out the motor.
The motor itself is wired via the starter to a 16A breaker - and it trips every time..

There was a little pink slip inside the motor wiring housing which has this diagram - Diag. 60 from the nameplate:

View attachment 326126

The table on the right lists the poles to be connected via metal links. I'm assuming I'm on the "LOW" setting for 230V - I've verified the links have been connected correctly.
Resistances of the three windings are about 5 ohms with no shorts to ground as far as I can tell.

I'm not a sparky but connecting U1 to U3 surely produces a short circuit from Line to Neutral via U4?

it will trip a 16 amp breaker out every time on start up. it will be a b type . the starting load for that motor will be about 50 amps. a 20 amp c type should be ok to stop the tripping

 

[KavindaJD]

Thanks gents,
20Amp C type breaker did the trick!

Time to start plumbing and building an enclosure for the motors.