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Date: | Sun, 05 Jul 2015 15:16:52 +0100 |
From: | "Peter C.J. Clifton" <pcjc2 AT cam DOT ac DOT uk> |
To: | geda-user AT delorie DOT com |
Subject: | Re: [geda-user] OFFTOPIC: New toy... |
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On 2015-07-03 23:16, Evan Foss (evanfoss AT gmail DOT com) [via geda-user AT delorie DOT com] wrote: > Ok. It is odd how many people I know use non-isolated probes on things > like the 3PH power to the motor. My background was power electronics at university, so it seems obvious.. (likewise, I'm also sure I've accidentally grounded circuits with an oscilloscope ground probe before now). A 100:1 non-isolated probe should be good for probing mains, motors, but obviously the ground needs to reference a chassis earth, not any other line (or neutral) conductor. Peter
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