Reply by HokieKen

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Posted on 220V table saw and wiring

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6298 posts in 1287 days

#1 posted 08-25-2015 01:59 PM

Why do so many assume a breaker protects the load where a plug and receptacle is involved?

Do you rewire rooms when you add lamps or TV s? Golly, you re really risking things if you re only using a 1 amp lamp on a 20A circuit!

Portable devices that have plugs include some sort of current protection. His saw has a breaker, probably right on the motor, other times in the switch mechanism, that protects the saw.

It makes perfect sense to size a circuit to a hardwired device. This is not one of those cases…

- OggieOglethorpe

Yep. There is no reason to downsize your circuit. If that were necessary, we would never be able to use any tools that draw less than 15 amps. A sub-panel is a great idea but is costly and entirely unnecessary. The saw has a breaker or fuse either on the motor or the switch, like Oggie said. If somehow your saw has been rebuilt and doesn’t have one, put a fuse in the line no matter what circuit/receptacle you’re using.

What’s being suggested with changing the plug or using a pig-tail is in no way “rigging” anything up. It is entirely safe and is a proper way to do it. There’s nothing wrong with a sub-panel or downgrading the circuit but there’s no need for it either.

-- Kenny, SW VA, Go Hokies!!!

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