cableguy619
join:2003-06-24
Chula Vista, CA
| reply to cableguy619
Re: Grounding question
I was back out this morning with wet damp conditions and no cable connected to thr gound the ground is reading today 11volts. Now as of thursday in the middle of the day in dry conditions with the same senario there was no voltage. So in my theory the ground is becoming energized by something.
Now there is AC back feeding on 4 different lines in the home back to the NIU, which I believe with the conditions of the ground when connected is charging up the lines and creating a load which eventually melts the cable.
From what I am seeing is 2 problems. A ground issue as well as a AC back feed issue. As I was out again today. I verified the incoming drops had no AC and tested the ground before we bonded to the orginal house ground and did read voltage on the house ground again. The highest I have seen the house ground has been 37 volts. Which obviously should be reading zero... just frustrated with this partuclar issue. |
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helter
join:2007-09-11
Silverdale, WA
| Did you do a resistance check on this so called ground? Not supposed to have more than 10 Ohms IIRC. It's possible there is corrosion between the bond and the rod or the wire is just old and needs to be replaced from the GB to the ground rod?
Also might want to check for ingress on each outlet, if you find one with ingress, you may have also found the source of the voltage as well, intermittent generally means sub has old POS EQ that is only charging it when they turn it on, IR old junk VCR, or ancient TV. Maybe have then turn on ALL EQ when you do the voltage check but be careful. |
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