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  1. pressedfortime

    -48 VDC grounding issue

    I am currently doing bids on remote stations that have no AC systems they Are all 48 24 12 VDC Central office with batteries, solar and 48 VDC gensets. My question is what type of earth ground is required I cannot find it in the NEC codes,engineering book or the power engineer who is 1800 miles...

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