This article was posted 01/21/2008 and is most likely outdated.

Engineering Case Study - Mystery Current
 

 

Subject - Engineering Case Study - Mystery Current

January 21, 2008
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Engineering Case Study – Mystery Current

 

imageDefinitely a phenomenon you don’t run across everyday. Plastic cable TV splitter boxes were melting off the wall at many homes in a specific area of a town. The outside house cable TV grounds would also generate a “spark” each time an attempt was made to connect it to the outside house electrical utility ground. Numerous groups had been involved to attempt to solve this situation, but the problem still remained unsolved.

 

Power Line Systems Engineering, Inc. was called upon to help solve this mystery. Click here to read their very interesting case study.

 

 

 

 
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Comments

  • POINTS TO REMEMBER(from the author)

    1.There were over 100 houses exposed to this high induced current condition(not just the 1 in the picture).

    2.The utility had measured this high current condition approx. 1 year earlier.

    3.This same electrical arcing condition could be occurring inside all these homes(between the TV cable/converrter/amplifier etc. and the AC power ground).Anyone of these homes could have caught fire inside at any time.

    4.As professional engineers,upon discovering this problem , A. we immediately ordered the cable systems be disconnected(to break this current loop) B. notified the head of the local electrical safety group. C. co-ordinated an emergency site meeting the next day

    Approx. 2 days later a remedial solution was implemented.

    Patrick Lynch
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