From FB group Bell Telephone of…
We had a hotline phone from So Cal Edison that was supposed to receive calls only. They would call us on a hot day when the power demand exceeded the supply, and they were going to shut down the a/c on buildings. We got a discount on the electric rates. They had a remote radio controlled relay on each air handler. The phone was supposed to give us advanced warning. I believe it was just a standard 500 set, and a pots line limited to receiving calls only. I’m not sure how that was done.
They also installed a kW meter with a bright red LED display at the meter/main power transformer. I remember seeing it get up to 2500 kW or 2.5 megawatts on hot days. 😟
