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In Reply to: RE: Ground for groundless apartment. posted by gusser on March 07, 2023 at 09:59:12
Hi, I don't know if this is safe but I used to run a wire to my old radiator that is tied into the plumbing.I remember attaching the wire to my amps chassis, side screw on a Dyna 70.....My apartment was groundless too, an extra room in an old house.....Mark Korda
Follow Ups:
A radiator is a pretty good bet for a ground. Steam and super heated hot water don't do well with plastic pipe.
The old cold water pipe is no longer a sure ground connection as plastic pipe may be used somewhere in the path.
For the reason you mentioned about water piping being plastic is cause not to trust the heating system as a ground path. the only possible connection to ground would be through the water make up at the boiler, otherwise it's an isolated system.
8 years ago when I replaced my boiler and had gas run into the house I bonded the water, gas and heating systems to earth ground. The intent was to be proactive and take anything that might stray to ground. It wasn't to provide a ground path for electrical systems.
Building without a ground wire (1966 and earlier) also uses metal water pipes as PVC did not exist back then. The pipes usually make a good ground. Stay away from the capacitors to hot and neutral.
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