Variac and angle grinder

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karatestu
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Variac and angle grinder

Unread post by karatestu » Tue Jul 04, 2017 2:26 pm

If I plug a240V angle grinder in to a variac and say run it at 110V will the speed be reduced ?

Sometimes I need a bit less speed and there are no speed controls on a bloody angle grinder. :angry-screaming:

Variac and grinder poised.............
Naim, Linn & Harbeth fanboy

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Dr Bunsen Honeydew
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Re: Variac and angle grinder

Unread post by Dr Bunsen Honeydew » Tue Jul 04, 2017 2:58 pm

Depends on the motor, some are controlled by the frequency so all voltage drop will do is make the motor overheat. Others may be controlled, but I am not a motor expert.

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karatestu
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Re: Variac and angle grinder

Unread post by karatestu » Tue Jul 04, 2017 4:32 pm

Ok, cheers. I will give it a miss then.
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kimangelis
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Re: Variac and angle grinder

Unread post by kimangelis » Tue Jul 04, 2017 6:26 pm

If you do connect it, the motor will attempt to draw more amps so will burn out. Don't.
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