A place for DIY project discussions.
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karatestu
- Posts: 1168
- Joined: Sun Jan 08, 2017 4:40 pm
- Location: North Yorkshire

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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.
Variac and grinder poised.............
Naim, Linn & Harbeth fanboy
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Dr Bunsen Honeydew
- Posts: 27857
- Joined: Wed Jul 11, 2012 7:26 pm
- Location: Muppet Labs

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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
- Posts: 1168
- Joined: Sun Jan 08, 2017 4:40 pm
- Location: North Yorkshire

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by karatestu » Tue Jul 04, 2017 4:32 pm
Ok, cheers. I will give it a miss then.
Naim, Linn & Harbeth fanboy
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kimangelis
- Posts: 505
- Joined: Tue Jul 08, 2014 9:01 pm
- Location: UK

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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.
Primare CD22. Primare DAB/FM radio. NVA TCS. AP10H(JS), with Denon AH-D7100's. A70 MkII's. Cube2's. LS7. BMU. Interconnects all TIS.