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So not an emergency stop at all then!
You just need a normal switch operating a contactor
Indeed. But why not just use an isolator switch? No need for the contactor.
Discuss Contactor wiring, break ring circuit through a stop button in the UK Electrical Forum area at ElectriciansForums.net
So not an emergency stop at all then!
You just need a normal switch operating a contactor
They have asked for the stop button that needs key to renegage
Indeed. But why not just use an isolator switch? No need for the contactor.
Assuming this is an existing circuit it may be much easier to install a contactor next to the DB and just run a switch cable rather than re-routing the circuit to the location of the switch.
My first thought was that as drawn it's introduced the potential for a contact to fail and because everything still works it won't be noticed. As you say, better to have a single larger cable to the contactor and then split out the RFC after it as a lollypop circuit.How far away from the RCBO is the contactor going to be? You'd be better off having a single 4mm conductor from the RCBO to the contactor.
If the contactor is far away from the OCPD then somebody could mistakenly add sockets to the ring before the contactor.
I remember back in school a woodwork teacher starting to give me a (gentle) ticking off when he came back into the workshop and saw me leaning on an e-stop. He stopped when I pointed out that it was to stop my classmates from maiming themselves or each other playing with the machinery while he had left a bunch of mischievous teenagers unsupervised in a woodwork room.Used to see these in schools all the time but not so much anymore. Mostly a 6.0 to a cooker switch then the ring final from there.
Reply to Contactor wiring, break ring circuit through a stop button in the UK Electrical Forum area at ElectriciansForums.net
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