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  • Users: jaime.A
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  1. jaime.A

    transformer delta connection line to ground voltage

    Hello We have a delta to wye transformer 13.2kV to 480/277V. I was looking at the working distance from the transformer front to a planned switchgear front. An NEC screen shot of 110.34(A)is provided, so my question is: what would be considered voltage to ground on the delta side of the...
  2. jaime.A

    size ATS based on load recordings

    Some ATS are to be replaced, so load recoding was performed. The load recorded was set to a sample current every second but I have gotten used to the the sample rate set every 5 minutes. The load recorded has the option to display 5 and 1 second sample rate. The issue I have is that in the 1...
  3. jaime.A

    low voltage main-tie-main

    Existing system: Low-voltage 480V/277 Switchgear with kirk-keys on the Main-tie-main. This system does not have an automatic transfer scheme. New Design: 480/277 switchgear with main-tie-main and use magnum DS 3000A CB. I would like to implement an automatic transfer scheme, so which control...

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