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  1. Thanks Kwired

    Thanks Kwired
  2. Electrical Disconnect for motor operated appliance

    2014 NEC article 422.31 (C) requires a disconnect for motor operated appliances greater than 1/8HP.
    It requires the disconnect to be within site of the motor (IE the panel or an additional...
  3. Thanks for the replies.

    Thanks for the replies.
  4. Pull box grounding fed from non metallic conduit

    Hello all, here's the scenario. Metal pull box with no splices in it being fed from a power panel via circuit conductors in nonmetallic conduit (circuit contains wire type ecg). From the pull box...
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    VFDs and motors on one feeder

    Hello,I was wondering what the accepted practice is for sizing a feeder if you had for example one regular motor and two motors controlled by VFDs. The section on variable speed drives requires...
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    sorry the load is 600 x 3, the house, and two...

    sorry the load is 600 x 3, the house, and two meter banks are each ~600A
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    Switchboard question

    Hello all I am working on a large residential project and am designing the main switchboard. The load per article 220 is around 600A for each of two meter banks and one house panel. I am planning...
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    120/208V single phase panel amperes

    Hello all I have calculated the load on a single phase 3 wire 208v panel to be ~21000VA. In order to determine the current rating of the panel I believe all I have to do is divide 21000 by 208. ...
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    you are right my bad

    you are right my bad
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    Thanks for the answer! That confirms what I was...

    Thanks for the answer! That confirms what I was thinking.
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    Converting 240v single phase to 120/208 3 phase

    Hello All, quick question for you. We are converting a church from single phase to 3 phase service. Currently they have a 120/240v single phase service and are going to a 120/208v three phase...
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    Thanks for the replies. Yes I agree just the...

    Thanks for the replies. Yes I agree just the percent voltage drop will change and that is what had me concerned to begin with. I know you are not supposed to exceed 5% total between branch and...
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    The calculation was actually for the branch...

    The calculation was actually for the branch circuits to each RV pedestal. They used 50A in the calculation as the current. I am not sure I agree with using 50A, I am leaning towards using 40A for...
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    RV Voltage drop calc

    Hello All I was checking a voltage calc that was done for a RV park and I had a question. When they did the calc they used 240V as the voltage. I was thinking that theoretically if the RVs had only...
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    Thanks for the quick response. We are installing...

    Thanks for the quick response. We are installing the conductors three feet away from the concrete pad then they are going to intercept them. In this case would you still say they are utility owned...
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    Underground service from a transformer

    Hello all I have a somewhat simple question. I am coming off a padmounted transformer underground to a meter then to a panel. NEC 240.21(C)(4) for outside secondary conductors requires that you...
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