Re: Smiths Electric Clock
From memory, the DC resistance of a healthy Smith Bijou motor coil should be around 11,000 ohms when measured with an ordinary multimeter. If you have a Megger or similar insulation tester, measure the resistance between the mains terminals and the metal frame, when you should see something over 20 Megohms.
If those tests are passed, the motor should be perfectly safe when connected to the mains, subject to the wise precautions that have been outlined earlier. Personally I don’t advocate fitting a 3-core flex; fit a permanently-wired RCD plug if you like, but like Nick I have several synchronous clocks in use, some dating from the 1930s, and they are extremely reliable.
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Phil
Optimist [n]: One who is not in possession of the full facts
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