Keyed Cutoff switch for workshop


Old 12-11-05, 07:53 PM
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Post Keyed Cutoff switch for workshop

I am wiring a workshop. I will have several (no more than 3-4) dedicated circuits (all 20A 110V) that I would like to "protect" (mainly from my kids) with a keyed cutoff switch utilizing some sort of relay. There has got to be a way to utilize a relay or more than one with a single switch to turn off power to multiple (similar) circuits. Any idea?

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Old 12-11-05, 08:19 PM
Join Date: Nov 2004
Location: USA
Posts: 973
Just a thought...

Put these circuits in a separate panelbox with a backfed breaker acting as a main. When you want them off, shut off that main.

If you really want a keyed cutoff, put it on the feeder to this panelbox before it comes into the panel (that would eliminate the need for the backfed breaker).

Probably a good idea to keep the kids from messing with the radial arm saw.
Old 12-12-05, 11:59 AM
Join Date: Sep 2002
Location: welland ontario
Posts: 5,599
You want something similar to an EPO (Emergengy Power Off) switch. It is a contactor that cuts power off to a panel. We use them in the computer romm and have the switches at the door. The computer operator can hit the switch and kill power to the whole room as they leave in an emegency. Instead of an on/off switch you could use a keyed switch.

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