The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Calling all Non-US members!! (Non-US only)
by aussie240
Today at 02:39 AM
Photo Upload Tutorial
by DanK
Yesterday at 11:35 PM
Sprinklered equipment 26-008
by bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 13
HotLine1 9
Texas_Ranger 8
sparkyinak 7
Trumpy 6
Who's Online
2 registered (DanK, LongRunner), 228 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#29653 - 09/21/03 08:38 PM electrolosis
magic Offline
Junior Member

Registered: 09/07/03
Posts: 2
Loc: Pgh., PA, USA
I have a electrical/ plumbing business, and my plumber has a job in which he had to replace a main water line due to a leak. the problem is that it had been replaced 5 times prior in the past two years. The water department says that it is due to electrolosis and that the water line ground from the service should be removed. When he made the repair we checked voltage at the water meter and got around .3 volts. We have since replaced the service, and after 2 weeks the water line was leaking again. Has anyone ever heard of this or have any answers. Thanks.

Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#29654 - 09/22/03 07:47 AM Re: electrolosis
ElectricAL Offline

Registered: 10/10/01
Posts: 615
Loc: Minneapolis, MN USA
Have you tried a clamp on ammeter on the pipe to determine the current flow in the pipe?

Are there other occupancies connected to the same PoCo transformer that supplies the new service that you installed?

Sounds like there is an open neutral somewhere on the load side of the PoCo transformer.
Al Hildenbrand

#29655 - 09/22/03 04:54 PM Re: electrolosis
sparky Offline

Registered: 10/18/00
Posts: 5545
Al's onto what could also be a hazard, careful breaking that like again..

#29656 - 09/26/03 08:39 AM Re: electrolosis
Webmaster Offline


Registered: 10/07/00
Posts: 3142
Loc: NY, USA
We dug this 2" copper line up, Nope, I checked the backfill, it was actually pretty good with no sharp objects around. You can pretty clearly see the pinhole near the top of the pipe and the only reason I can guess from it is an electrolytic action. This was the 3rd repair made to that line in a year.

Solution............ PVC of course.

George (Corron)


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals