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Eeyore

wrote:

Cable company says they can't hook up TVs as long as there is AC
coming from TV to ground when they use a multimeter.

They are incompetent.

From what I read
TVs do output some AC until the cable is connected and with the proper
tester leakage if present can be detected. But a simple voltmeter
will ALWAYS read AC if RF from TV is not connected to anything. Is
that the proper understanding or am I out to lunch.

Very little CURRENT flows from such a connection. It's the CURRENT that's
dangerous and in this case the current is limnited to a safe level.

It's the cable company that's out to lunch.

Graham