Understanding Article 220 NEC How to Calculate a Commercial Building Such As A Store

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  • เผยแพร่เมื่อ 17 ม.ค. 2025

ความคิดเห็น • 18

  • @marcs2812
    @marcs2812 2 ปีที่แล้ว +1

    thank you for making it much clearer for me and for adding the NEC codes.

  • @1996ivang
    @1996ivang ปีที่แล้ว +2

    thanks for the content. However you wrote 3382 instead of 33821 when adding up your loads on the white board. The answer is correct, just not the math you showed on the board.

  • @icevariable9600
    @icevariable9600 ปีที่แล้ว

    Fantastic video. Excellent explanation.

  • @jamesmuravska2922
    @jamesmuravska2922 3 ปีที่แล้ว +5

    Lighting load at 100%, but since its more than 3hrs, you do 125% continuous load. Cool. Thanks
    I like how you break it down and take all into consideration. Thanks Sal. :)

    • @derekstratford8214
      @derekstratford8214 ปีที่แล้ว +1

      incorrect ubder 220-12 the 125% is already calculated into the load

  • @alaedinashaib8264
    @alaedinashaib8264 12 วันที่ผ่านมา

    Wow, Sal havn't seen you in 10+ years. Hope you are doing well

  • @matthewwilliams4218
    @matthewwilliams4218 4 ปีที่แล้ว

    Thanks, very informative and easy to understand !

    • @matthewwilliams4218
      @matthewwilliams4218 4 ปีที่แล้ว

      Your math is off on your final VA you said it was 3382 but it’s really 33821

  • @jamieearl6611
    @jamieearl6611 2 ปีที่แล้ว +1

    Late to this video but would you not calculate AC (24 X 1.25 ) largest motor per 430.24 , and include Sign and Outline Lighting 220.14 (G) at 1200va and 1.25 for over three hours ? Just asking .

  • @mjmjersey
    @mjmjersey ปีที่แล้ว

    Awesome video were can I find 10,000 to detuct in the articles

  • @jasonparkinson7621
    @jasonparkinson7621 2 ปีที่แล้ว

    Thanks. It would be interesting to know how they do load calculation for skyscrapers.

  • @MrGodisded
    @MrGodisded 2 ปีที่แล้ว

    Good stuff!

  • @georgepreciado9129
    @georgepreciado9129 3 ปีที่แล้ว

    How can I take this class. I'm having problems passing the state certification

  • @SuperFinebitch
    @SuperFinebitch 3 ปีที่แล้ว

    just confirming. This is the NEC 2017 correct?

  • @kirkshirley1319
    @kirkshirley1319 3 ปีที่แล้ว +10

    Too many problems with this video!
    I don't know which NEC he's using.
    I'm using the 2020 NEC.
    Table 220.12 list retail or stores at 1.9 watts per square foot. He was using 3 watts per square foot. Then he uses a multiplier of 125% for continuous load but on the note on table 220.12 says note: the 125% multiplier for continuous load as specified in 210.28 is included!
    This business about multiplying 208 volts by 1.732 to get 360 is confusing. 1.732 * 240 is 415 so what!
    Simplified current flowing on one phase is:
    I = P /(E*1.732)
    In this case E equals 208 volts. And we're not concerned with the power factor or efficiency.
    If it helps, think of the 1.73 as the extra power flowing on the other phases you're currently not looking at. Otherwise ignore this statement.

    • @trevonculton6000
      @trevonculton6000 2 ปีที่แล้ว +1

      I was wondering the same, i thought 3va per SQ FT was for residential. A retail store looks like 1.9 VA per sq ft. Salvatore Ferrara is there any way you can help clarify this?

    • @bassclefjef1887
      @bassclefjef1887 ปีที่แล้ว

      This guy must be getting his calculations out of a crackerjack box! Please tell me he’s not a instructor!

  • @michaelhartter2123
    @michaelhartter2123 3 ปีที่แล้ว

    Made me laugh when the phone went off. That would happen to me