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  • Users: ENG2009
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  1. ENG2009

    Whole house surge protetion

    I'd like to look into whole-house surge protection. Are there some types of systems I should stay away from? I'd appreciate and tips or advice.
  2. ENG2009

    Bad Power Factor Measurement

    I rented a Fluke 435 to measure the power consumption of some big power supplies we have (Input: 480VAC, 60 Amps). I logged the data on 3 different models of power supplies. On one of them the power factor was 0.71, but on the other two the results are meaningless - the power factor was around...
  3. ENG2009

    Calc Power for 3 phase power supply

    I am trying to calculate the efficiency of a 3-phase 480V power supply that outputs 10.5 volts DC at 840 amps. The purpose is to see how much we can save in electricity by using a newer more efficient power supply. We are not charged for power factor by our electric utility. I've got a Fluke...

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