Reply to "Filtering Wall Power"

NortonOGR Forum Member

There two ways to use a scope that are safe. First put the ground lead on the screw that holds the cover plate. That should be earth ground. Then put the probe into each side of the power. One side will give no or little voltage (neutral) and the other will show 110-125v sine wave (hot). The other way if you have a 2 channel or more scope is to use two probes and set the scope for A minus B (differential). Leave the ground lead disconnected. Transients are best measured with a storage scope (analog) or a digital scope.

Pete

9/12/1310:40 PM

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