How to measure current

[ChrisCan 10+ year member]

What is the easiest way to measure current drawn by an amp? I am just curious how much it getting...? Where to connect the ampmeter?

CC

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[jrz126 10+ year member]

You'll need a clamp on meter like this:

It'll just clamp around your power wire.

A DMM usually needs to be placed in series with the device and they are usually only capable of measuring 10A.

 

[kbkid 10+ year member]

Ohm's Law: V = I x R

 

[its_bacon12 10+ year member]

P = I x V

I = P/V

 

[Lakota 5,000+ posts]

A dmm will GLOW if it sees too much current. I've done it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[2wheeler 10+ year member]

You'll need a clamp on meter like this:

It'll just clamp around your power wire.

A DMM usually needs to be placed in series with the device and they are usually only capable of measuring 10A.

I'm not positive on this, but I think clamp on meters only measure AC amperage, not DC. Anybody know for sure??

 

[delvryboy 5,000+ posts]

I'm not positive on this, but I think clamp on meters only measure AC amperage, not DC. Anybody know for sure??

You can buy them for DC, but they are a little more pricey.

 

[HelloImBob 10+ year member]

yea my dad has a big kit with a clamp like that, it can measure both AC and DC

if u want a quick measure u might want to check out a battery shop, I know that a couple around here have them, along with carbon pile testers and whatnot