| Re: Checking the 50a/30a service before you plug in? [message #295760 is a reply to message #295744] |
Fri, 19 February 2016 16:24   |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma:
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Senior Member |
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If you are working off a 120/240 system, you should put some load on one line to neutral and watch the voltmeter. If the neutral connection is good it will stay at ~120 volts, if its not a good neutral, the voltage across your load will go down and the voltage on the unloaded leg will go way up!! Not good!
A poor neutral connection may still look good on your tester because you have balance loads on each line. You need to put some load onto one line to make the neutral take some current. Plug in your toaster or electric heater, that will put a good load on the connections.
If you are working on a straight 120v circuit if you have a bad neutral (or line) connection, you will just lose power as soon as you place a significant load on the circuit.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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