Any smart people How do i measure wattage with multimeter?
- Thread starter ebcrew
- Start date
greg nr
Well-Known Member
You can only measure the amperage with most meters. And to do that, it needs to be in series with the current. Go from plug to meter, then to load on the hot lead. Measure amps, multiply by volts.
Or get a ge kill-a-watt meter and just push a button. It's like $20 on amazon.
Or get a ge kill-a-watt meter and just push a button. It's like $20 on amazon.
ebcrew
Well-Known Member
I'm in North America so do I just need to measure the amps on the hot lead and multiply by 120 or do I need to measure the actual voltage.
I'm gonna play around with it. Can I use an extension cord, separate the wires so I can get my amp clamp around just the hot lead. Will that work
xtsho
Well-Known Member
3 Ways to Calculate Wattage - wikiHow
There is a very simple calculation equation for computing watt usage for an electronic device. All you need to know is the number of amperes (amps) and the number of volts for the device. Understanding watts is important because it can...
m.wikihow.com
printer
Well-Known Member
So you have a clamp on ampmeter. If you are measuring from the wall using 120V should get you within 10%. If you want a more exact number you can measure the voltage across the line and multiply your amp reading.
