What a fabulous film! The variety of old-fashioned stuff is mind-bending.
Take note of the guy at 3:50 using a light bulb with two short wires to detect 110V on the blinking sign controller. Not exactly a UL-approved method, but the electrician that serviced our rental house in Mexico in 1973 did the same thing.
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That was just … awesome.
What a fabulous film! The variety of old-fashioned stuff is mind-bending.
Take note of the guy at 3:50 using a light bulb with two short wires to detect 110V on the blinking sign controller. Not exactly a UL-approved method, but the electrician that serviced our rental house in Mexico in 1973 did the same thing.
http://www.archive.org/details/Electric1942