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30-11-2017 #11
Got the MCB hooked up and the current limit thermistor and it all works perfectly ;)
MCB 6amp type b, trips without the thermistor doesn't trip with it. PSU appears to be running fine have to wait for the AM882 to come so I can test it under load but should be fine. The resistor is rated to 5amp once it's up to temp.
Is there any point adding a slow fuse as well now I have working MCB type b protection?
The 12v PSU doesn't go through the MCB only the toroidal transformer.
This is the correct current limited thermistor for a 1kva toroidal transformer
http://www.ebay.co.uk/itm/2x-NTC-10D...72.m2749.l2649
If anyone else is interested.
I notice when you turn the transformer off the AM882 stay lit for about 5 seconds and when you test the capacitors when you've turned it off they're ready 7v's so it's good to know the capacitors are mostly discharged by the AM882's at switch off although I might still add a resistor.Last edited by Desertboy; 30-11-2017 at 03:11 PM.
http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm
If you didn't buy it from China the company you bought it from did ;)
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