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How do you measure over 10A?

Posted by UkIan

UkIan

How do you measure over 10A?
October 30, 2014 04:34AM

Registered: 9 years ago
Posts: 376

All the multimeters I can find are limited to 10amps. Is there something I'm missing? I'd like to see what draw is happening on my heated bed, but that's going to be 10-20 amps.

Thanks

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dougal1957

Re: How do you measure over 10A?
October 30, 2014 05:01AM

Registered: 9 years ago
Posts: 1,159

Quote
UkIan
All the multimeters I can find are limited to 10amps. Is there something I'm missing? I'd like to see what draw is happening on my heated bed, but that's going to be 10-20 amps.

Thanks

Easiest way is to use a clamp type meter such as Trend AC/DC Clamp meter

HTH

Doug

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UkIan

Re: How do you measure over 10A?
October 30, 2014 05:52AM

Registered: 9 years ago
Posts: 376

Never seen those before, thanks smiling smiley

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VDX

Re: How do you measure over 10A?
October 30, 2014 05:58AM

Admin
Registered: 16 years ago
Posts: 13,889

... read about shunt-resistors - it's as simply as measuring the voltage-drop along a known resistor (or the previously mesured wire resistance) and using Ohms law: I=U/R ...

Viktor
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