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50 VOLTS ON GROUND #62491 02/16/06 10:02 PM
Joined: Feb 2006
Posts: 78
L
lite bulb Offline OP
Member
I RECENTLY LOST MY COMPUTOR SERVER WHICH IS ON COMCAST WHEN COMCAST CAME OUT THEY SAID THERE WAS 45 TO 50 VOLTS ON THE GROUND WHAT WOULD CAUSE THIS, THE SERVICE HAS A WATER PIPE AND GROUND ROD GROUND AT THE MAIN AND COMCAST TAPPED OFF THE WATER PIPE.

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Re: 50 VOLTS ON GROUND #62492 02/16/06 10:29 PM
Joined: Jun 2004
Posts: 1,273
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Tesla Offline
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Call an electrician....

Sounds like trouble in your panel.


Tesla
Re: 50 VOLTS ON GROUND #62493 02/16/06 10:48 PM
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Posts: 78
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lite bulb Offline OP
Member
WHAT WOULD CAUSE THIS

Re: 50 VOLTS ON GROUND #62494 02/16/06 11:06 PM
Joined: Feb 2003
Posts: 687
A
Active 1 Offline
Member
Check the equipment ground on your caps lock. Otherwise call an electrician quickly.... And pay them to make repairs. You may have a dangerous situation that can destroy electrical items, cause shocks, or worse.


Tom

Re: 50 VOLTS ON GROUND #62495 02/16/06 11:10 PM
Joined: Oct 2003
Posts: 156
D
dereckbc Offline
Member
A very common problem. It is life threatening and you should seek professional help ASAP. Sounds like you are not in the trade, so fixing it yourself is not an option.

Failure to get the issue resolved will likely cause immediate equipment failure, and possible fatal shock under the right conditions.

Re: 50 VOLTS ON GROUND #62496 02/16/06 11:12 PM
Joined: Feb 2005
Posts: 693
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Larry Fine Offline
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I am curious as to what point they measured this voltage from, i.e., the reference.


Larry Fine
Fine Electric Co.
fineelectricco.com
Re: 50 VOLTS ON GROUND #62497 02/17/06 09:02 AM
Joined: Oct 2003
Posts: 156
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dereckbc Offline
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Larry good point. If it was between the service and coax shield guess which pot is calling the kettle black.

Re: 50 VOLTS ON GROUND #62498 02/17/06 09:42 AM
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pauluk Offline
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I'm not clear as the two points between which the measurement was made. I assume one was at the ground on the outlet powering the server, but when you say Comcast "tapped off the water pipe" do you mean that was the reference point used?

If the water pipe is properly bonded and at ground potential, then it might just be a bad equipment ground to the receptacle in question. Or maybe it's a replacement for an older 2-wire outlet which never had a ground in the first place?

Re: 50 VOLTS ON GROUND #62499 02/17/06 09:53 AM
Joined: Apr 2004
Posts: 349
Radar Offline
Member
Quote
WHAT WOULD CAUSE THIS
A defect.

Call a qualified service electrician asap.


There are 10 types of people. Those who know binary, and those who don't.
Re: 50 VOLTS ON GROUND #62500 02/17/06 05:06 PM
Joined: Feb 2005
Posts: 693
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Larry Fine Offline
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Another psooibility is that the problem is on the incoming cable shield, and not the house ground.

Cable systems have, if I'm not mistaken, 50 volts imposed on them for powering in-line equipment.

It is very possible that this damage was caused by a defect in cable-company equipment, and they are liable.


Larry Fine
Fine Electric Co.
fineelectricco.com
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