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philipdybel philipdybel is offline

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  1. Ryan@1stDay
    08-17-2016 12:24 AM - permalink
    [email protected]
    Hi

    I am currently trying to size my circuit conductors and breaker for a paint booth.
    The electrical in the booth consists of:
    - 20 LED lights @ .45amps each..... 9amps
    - 1 10hp 208volt motor....... NEC FLC 30.8amps
    - 1 7.5hp 208volt motor...... NEC FLC 24.2amps

    Now, what I have found is based on article 430.24 I will size my conductors based 125percent of the largest motor(38.5amps), plus the sum of the s2nd motor(24.2amps), plus the 9amps for th lighting load..

    This would bring me to, 71.7amps(#4THHN)

    Now, would I then take that total(71.7amps) and apply T430.52 to size my Breaker?? In which case, 71.7amps @ 175percent would be a 125amp breaker.?

    I feel like I am missing/overlooking something here..

    Thank you in advance for all your help!

About Me

  • About philipdybel
    What is your electrical related field/trade:
    Construction & Maintenance, Industrial Commercial & Residential
    General Location
    Indiana

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  • Last Activity: 09-21-2018 07:24 AM
  • Join Date: 02-29-2016
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