I plan to replace a 150ft long Yard Service with type K copper, but I worry about Pin Holes.
Two of my neighbors had a section of type L copper develop pin holes in their open basements when it was about 10 yrs old. We have treated water.
If Pin Holes develop in open basements, why wouldn’t Pin Holes develop in copper installed underground ?
maybe I just worry too much.
thanks,
theestimator1
Master Electrician
Maryland
Now that you've started a new thread, AND divulging that your area has problems with pinholing,
That would be aggressive water, ph too high, too low. The water eating the pipe from the inside out.
So, since this is the issue, I'm calling you out on your skills as a Master Electrician to find out some really important issue to pinholing and copper pipes.
I'm in an area where copper is king, very rare to hear of pinholing in copper pipe.
But over the years there's been some issues relating to this, and I've been told that a loose neutral or low grade current travelling through the lines will cause just this.
Codes in my state require dielectric fittings at the water heater and that controls the rapid breakdown of the water heater itself.
But every once in awhile I'll find a small section of copper for no reason just cancer out,
sometimes it'll start from the main on the cold and travel to the water heater, then stop. Cold only, ground wire attached to the main line.
Care to explain where the logic is in all this, the specific termage so I can relay this information to my customer......because when there's pinholing in my area, it never attacks the entire potable water supply. It seems to only target certain locations and that's why I cannot simply determine the true reason for it happening.
You could blame the piping.....but why would the cold side, or hot side for that matter be selectively corroding/pinholing when you know the piping was pulled from a large bundle when installed?
There's something to be said about impurities in the piping, but I'd like to know the close association of electrical systems and the water supply lines in a home where the electrical panel is commonly grounded to the potable water supply.
I'm no electrician but I believe they've abolished this practice in ky? I thought it was required to now drive two ground rods 10' apart in direct proximity of the panel.
My last customer had this problem, couldn't get the electrician who wired the house to come out and explain the possibility.