electrical tester question


Old 01-31-05, 09:23 AM
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electrical tester question

I have a greenlee cmt 60 cat lll clamp type electrical tester. my question is how do I measure amperes with it I turned the dial to the proper setting clamped the clamp around a hot ac wire and got no reading. do I need to also do something with the test leads at the same time I have it clamped around the hot wire? I havent tried that for fear of ruining the tester. thanks for any answeres.
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Old 01-31-05, 09:44 AM
Join Date: Sep 2000
Location: Fayetteville, NY, USA
Posts: 1,052
You can only clamp it around a single conductor. Clamping it around a Romex cable, for instance, will give you no reading. Test leads are not required for the AC amp test.

Old 01-31-05, 12:56 PM
Join Date: Oct 2004
Location: USA
Posts: 719
Your appliances draw the current when running.
If you don't have something plugged in and turned on the reading will be zero.

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