Intermittant hum in my conduit

I'm getting an intermittant hum in my electrical conduit in my garage. It is actually pretty regular around every 30 seconds or so. It seems like maybe a surge?? If you hold onto the conduit, you can actually feel it vibrate.

Any ideas??

Reply to
mwilliams4
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What is the conduit connected to?

Reply to
John Grabowski

We might have some if you'll tell us what's in the conduit

Reply to
RBM

Could be a resonance thing - strp light, freezer/ fridge attached. When you touch the conduit does that damp it?

Reply to
Clot

A hum?

Reply to
Oren

He very well could have discovered where all the honey bees have gone

Reply to
RBM

None of the others said it, so I will- put a good analog voltmeter across the conduit and a good ground. Something leaking 60 hz into the metal can produce a hum and what feels like a vibration to your fingertips. I used to get that with radios powered by cheap transformers, and I also got it on some idiot-installed florescent lights in my laundry room.

aem sends...

Reply to
aemeijers

It's electrical conduit that goes to a bank of outlets in the garage. It does dampen when you touch it. if it were 60Hz why would it do it at near 30 second intervals?

I'll have to try the voltmeter.

Reply to
mwilliams4

Good thought. :-))

Reply to
Oren

Did you ever find out what was causing this? I am experiencing somehing similar with an electrical conduit in my garage. The wires go from the breaker box and feed into the kitchen outlets. I don't think it is actually an electrical issue as it persists even after the main is shut down. It is very cold today in WI and wondering if that could have something to do with it. Any ideas? The hum is high pitched and constant, not intermittent.

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Reply to
kdaybreak

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