2007-05-29 06:15:41 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
I'm assuming you have a clamp-on ammeter. You will need to measure each phase separately.
To measure POWER, you'll also need to measure the voltage on each phase.
Voltage x Current = Apparent Power (VA)
If you wish to measure the real power (watts), you will need to either know the power factor or have a meter that actually measures in watts or kilowatts.
2007-05-29 07:36:17 · answer #1 · answered by Thomas C 6 · 2⤊ 0⤋
You must measure each phase separately. This works for a clamp on amp meter and you will get only the amps. If you want to measure power, you will need a three phase power meter. That is more complex to use. You would be better off getting the manual for that device and following its instructions.
2007-05-29 08:45:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You would test each phase separately. If you were to test all three phases together by clamping around all three, you'd see zero Amps (Unless there in some unbalanced load that's returning on the Neutral). The vector sum of all three phases together if there's no unbalanced load is zero.
2007-05-29 06:23:00 · answer #3 · answered by Dave O 3 · 1⤊ 0⤋
Must be separately.
2007-05-29 07:14:55 · answer #4 · answered by GABY 7 · 1⤊ 0⤋