Re: Neon Tester Screwdrivers
That's it, "Switch off, Isolate, Dump, & Earth"
Otherwise you'll be like the poor technician who returns to an H.V. installation, - from a dentist's appointment, only to find out too late that his colleague has reversed the connections of an inductor/capacitor circuit. Big bang!
Anyone remember the BBC-2 colour test film, circa 1967/8?
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