10-07-2016, 01:46 PM
That is correct. The issue is that if you spend the secondary of a CT that has current passing through the primary counter EMF will produce a nasty spark. Lab CT's have a shorting switch on the so you may short the secondary and then open it downstream with current in the primary, but that is not really cost effective for our purposed on a device that for many will never be disconnected from its load ( the amp meter ).
Another option would be to just open the main breaker so no current could flow through the CT's and do whatever it is you are planning to do to the meter.
Russ
Another option would be to just open the main breaker so no current could flow through the CT's and do whatever it is you are planning to do to the meter.
Russ
Russ White
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1999 45' Double Slide - Factory upgrade 2004