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- Nov 18, 2008
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ok, along the lines of an estop for my 50amp setup.. I'd need the switch and the contractor? For some reason, though I've read the thread already, my brain is not picking up on how it works.
To setup an e-stop like the on in the drawing that I posted here, you need a contactor (in your case rated for 50amps). You will also need a System Start button, and Emergency Stop button and a Relay (R1 in my drawing).
If you read the thread you'll see it took me a while to get my head around it also, but I promise you CodeRage did and excellent job working me through it. It is well worth it to understand how and why it works instead of someone just telling you what to buy and how to hook it up.
The kind of hard part to understand is that R1 latches the circuit... It kinda powers itself to hold the power on the contactor coil which makes the contactor close and provide power