I tried the whole houseSwitching - and you have the same noise - boy I'd like to think that is coincidence but does it still occur using a different outlet? Try preferably on the opposite pole of the three-phase 220 - use 120 on single phase in banks - setup.
IF the noise disappears, the outlet you had it on, or run to it, is suspect.
It's been a crazy year for weather - heat, air-you-can-wear as well as the A/C providing a means to offer a "Cold side" for moisture to collect, to add to the problem of corrosion.
Time to get out the DVM, test for leakage into ground or neutrals - even GFCIs' can fail - use a cold water pipe - the same one they use to bond the mains for the house electric on - because you may have a bigger problem. Start testing for voltages across terminals and to ground - ohmic too - on ground and neutral.
The Bigger problem? Loose, corroded wiring wire nuts or outlets with corroded copper to brass or Aluminum to Brass to Copper. Even a staple into the sheath or jacket of a home wire can let the moisture collect and corrode.
You can have leaky outlets caused by A/C air blowing into hot/muggy walls thru them forming condensate getting into the walls.
The buzzing can be a phasing issue from wires from both sides on the mains routed close together that are now leaky because insulation used to keep the moisture and electrical losses out is failing - old wiring can cause this.
The biggest indicator is your electric bill - if it jumped up considerably more in the past few years - it may be from the extra need for it yes, but the jumps usually follow the drop back to a "range of normal" - if you haven't been seeing that - suspect the home wiring or you have several devices on the mains causing this loss.
It is funny you mentioned my light bill is always high, plus my landlord is a licenced electrician.To me sounds like a open circuit some where .Switching - and you have the same noise - boy I'd like to think that is coincidence but does it still occur using a different outlet? Try preferably on the opposite pole of the three-phase 220 - use 120 on single phase in banks - setup.
IF the noise disappears, the outlet you had it on, or run to it, is suspect.
It's been a crazy year for weather - heat, air-you-can-wear as well as the A/C providing a means to offer a "Cold side" for moisture to collect, to add to the problem of corrosion.
Time to get out the DVM, test for leakage into ground or neutrals - even GFCIs' can fail - use a cold water pipe - the same one they use to bond the mains for the house electric on - because you may have a bigger problem. Start testing for voltages across terminals and to ground - ohmic too - on ground and neutral.
The Bigger problem? Loose, corroded wiring wire nuts or outlets with corroded copper to brass or Aluminum to Brass to Copper. Even a staple into the sheath or jacket of a home wire can let the moisture collect and corrode.
You can have leaky outlets caused by A/C air blowing into hot/muggy walls thru them forming condensate getting into the walls.
The buzzing can be a phasing issue from wires from both sides on the mains routed close together that are now leaky because insulation used to keep the moisture and electrical losses out is failing - old wiring can cause this.
The biggest indicator is your electric bill - if it jumped up considerably more in the past few years - it may be from the extra need for it yes, but the jumps usually follow the drop back to a "range of normal" - if you haven't been seeing that - suspect the home wiring or you have several devices on the mains causing this loss.
I may have found the issue I measured 2 main filter caps they both read 125uf using my tester and the caps are rated for 150uf think they are making that hum. will keep you posted
While I was taking care of my mother in Florida, I ended up replacing all the AC outlets and switches to achieve a steady voltage. She had a terrible problem controlling the ants. The little buggers traveled the wires and mucked up almost every socket and switch. It only takes a few of them to fry across the terminals. I’m sure the high humidly in Florida didn’t help either. I never experienced those problems elsewhere, but it gave me a new found respect as to what can happen under some circumstances.Switching - and you have the same noise - boy I'd like to think that is coincidence but does it still occur using a different outlet? Try preferably on the opposite pole of the three-phase 220 - use 120 on single phase in banks - setup.
IF the noise disappears, the outlet you had it on, or run to it, is suspect.
It's been a crazy year for weather - heat, air-you-can-wear as well as the A/C providing a means to offer a "Cold side" for moisture to collect, to add to the problem of corrosion.
Time to get out the DVM, test for leakage into ground or neutrals - even GFCIs' can fail - use a cold water pipe - the same one they use to bond the mains for the house electric on - because you may have a bigger problem. Start testing for voltages across terminals and to ground - ohmic too - on ground and neutral.
The Bigger problem? Loose, corroded wiring wire nuts or outlets with corroded copper to brass or Aluminum to Brass to Copper. Even a staple into the sheath or jacket of a home wire can let the moisture collect and corrode.
You can have leaky outlets caused by A/C air blowing into hot/muggy walls thru them forming condensate getting into the walls.
The buzzing can be a phasing issue from wires from both sides on the mains routed close together that are now leaky because insulation used to keep the moisture and electrical losses out is failing - old wiring can cause this.
The biggest indicator is your electric bill - if it jumped up considerably more in the past few years - it may be from the extra need for it yes, but the jumps usually follow the drop back to a "range of normal" - if you haven't been seeing that - suspect the home wiring or you have several devices on the mains causing this loss.