Greetings fellow woodworkers,
Before I do anything in regards to electrical, I want to make sure I fully understand what I’m doing before I proceed. Here’s my situation.
After I ripped out my electric cooktop in my house to put in a gas one, I ran the electrical cord which powered the cooktop to a junction box, cut off the bare wire, and plugged each of the ends with a connector. (That being done with the breaker turned off).
The source for the ccoktop is 8 gauge, 3 wire cord-red, black, and white and is connected to a 40 amp breaker. Now I want to add a new jointer and want to use 220v, using this source from the old cooktop.
When testing the leads with a voltage tester, the red&black gives 220V, the red&white gives 110V, and the black&white gives 110V.
Now the questions I have are: How do I connect a jointer motor, wired for 220V with a 3 pronged plug (2 leads and ground) to this source?
Also, is it strange that the source does not have a ground wire?
The house is about 18 years old if that sheds any light wrt electrical codes.
Thanks for your always valued advice!
Jim
Replies
The red and black are you hots. The white is the neutral. Newer wiring also has a safety ground which is normally green, both the white and green return to the same buss bar in your load center. It's just an added safety ground.
My problem is that you will be way over fused for your jointers protection but OK for the wiring size. I would be tempted to add a motor controller to your jointer with properly sized heaters. You don't need a magnetic relay, a manual one will work just fine.
Or you can install a simple double pole breaker box at your jointer and use the appropriate breakers for your jointer.
Or Just install an outlet that your jointer will plug into. But you won't have any machine protection other than when it shorts out and trips the breaker.
Probably more info than you wanted ;-)
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