Removing Hum from Cable TV feed

[Bob Zelin]

TOM WRITES –

I measured the difference in ground potentials for the electricians and pointed to it and said:”See, look at that. It’s almost a two volt difference.” The electrician looked at me with the same look that my dog gives me when I talk to him. A couple of volts won’t hurt you was the reply.

REPLY –
many people say “why is Bob Zelin nuts” – because I have to deal with this EXACT SITUATION you wrote about in real life on an almost daily basis, and if I become hysterical, these electricians will BEAT ME UP (so I take it out on you guys). The example you gave is often the EXACT SAME RESPONSE I often get – ” a half a volt won’t kill anyone” – and they look at you like you are an idiot. We all run so many wires, but for an electrician to run that extra white wire to the common “low” buss of the panel, and make sure all the grounds are in fact “grounded” back at the panel – well, this just KILLS THEM ! (“hey, my light bulb lights up”).

Bob Zelin