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Investigation into the reverse polarity incident (Investigator…
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Hypothetical Reverse polarity- The crew had completed a replacement of a pole, which involved transferring the house service line to the new pole and making new connections. This requires a test to prove the system has three phases and a neutral connection. The test was completed with the neutral connection and one of the phases transposed. This resulted in an increase of voltage, causing damage to equipment in an office complex.
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