Recent content by jim clark

Yes all seems fine switch is working ok its just a capacitor start motor there aint a run cap on it ive wired a few of these up and this one has got me stumped Sorry roys yes iam referring to the centrifugal switch

Forgot say that when I got to motor I striped it down gave it a good clean out cleaned the contacts on the starter switch checked the windings and all looks ok someone said to me it could be the resistor in the capacitor but then it would do it every time

Iam at work at the moment so cant take any photos of the motor my lathe is a 9 in model A southbend with the screw cutting gearbox and 3 1/2 foot bed shes flatbelt 1947 I do all kinds of bits and pieces iam currently I the middle of converting a straight six engine to take six individual...

The pop and flash is coming feom the starter switch it dont happen all the time I can turn it on and off twenty times with no problems and I can do this both directions then all of a sudden it will happen I reset the rcd and it starts up fine with no issues

I have got it connected to a nvr switch before the dewhurst I dont use the dewhurst to switch it on and off sorry should of mentioned this before

Forgot to say that nothing happens to mcb

Ive got it connected to a dewhurst drum switch run windings connected to 5 and 7 start windings to 6 and 2 with the start capacitor in series with the starter switch if that makes any sense lol

Sorry that sounds a bit strange no the rcd is not in the starter switch

its the rcd and its coming from the starter switch, I have taking the motor apart and cleaned the contacts on the switch and it makes no difference its not all the time I can stop start the motor twenty times and then pop it trips out but I reset the rcd and it starts straight up no problems

hi there, wonder if anyone can help, I bought a motor for my lathe its 1hp single phase 1425 rpm cap start 50hz cycle windings have been tested and are fine motor runs perfectly but every now and then when I press the button to turn it on I get a pop and a flash and it trips the rcd can anyone...