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  • Users: txg84
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  1. txg84

    TVSS on UPS output

    On of the building on the campus has been having issues with it's UPS. I decided to install a Dranetz on the output of the UPS to monitor it. The UPS is 225kVA, 480V Input 208Y/120V output. The load on the UPS is about 200A but there have been current spikes at diffrent times. The first spike...
  2. txg84

    Main Bonding Jumper`

    I was inspecting a 13.8-208/120V pad-mount transformer that serves two separate buildings. The equipment grounding conductors and the grounded conductor(1 for each building) are all bonded together at the transformer. Each building is fed by 3-phase conductors, 1-grounded conductor, and...

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