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Go to a ped where you experienced the sparking. Use your 188 B voltage tester or new style voltage tester, if thats what your company uses now, and check for a hot box or ped. If hot walk away and report it. If not, break the bond in and out and using a vom or sidekick or craft interface unit, check all bonds to earth ground and crossbox or ped to ground in and out. All test points should be 4 or 5 ohms or less to ground.

Example: If you check ten points to ground and get 4, 5, 9, 2, 3, 7, 2, 1, 3, 15 ohms I would look at the 9,7 and 15 sections for grounding or bonding issues.



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Good responses all. I think Arthur is correct. The power utility is "supposed" to have a ground wire down every pole and pad that has a transformer or capacitor bank on it. I have been involved with multiple cases of a transformer ground being broken, especially close to a PIC pole splice, and the exact same condition you describe occurs.

The spark is your clue. If you are in a rural area and you don't have access to an OSP engineer, you can determine where the fault starts by lifting the bond at the CO and measuring the voltage between CO ground and the sheath bond. It should read very low, near zero. Next, take a resistance reading from sheath bond to CO ground. That reading should be very low, certainly nothing over 1 0r 2 ohms.

Then, go half the distance to the "spark" bond, again lifting the bond and taking readings. If the bond ground was good at the CO, you will eventually come to a point where you will see a large voltage between the sheath bond and ground, moving from good to the "spark" looking for the jump in voltage. I would say that you, most likely, will find signs of digging, a pole or transformer replacement or vandalism. Remember, if you must do this on your own, use appropriate safety measures. Wear gloves, insulate yourself and never, ever mess with the power utility's equipment. If you see the problem, report it immediately to your supervisor AND the utility company. Make sure they understand this is a life safety issue. Be safe.

Rcaman


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PS: When you clear the trouble would you please post your findings.

Thanks.


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