Electrical Calculations / Engineering

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Optional calculation NEC 220.82
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12
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3K
frofro19
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TDD without THD - Harmonics
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4
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799
jim dungar
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VFD driving motor at slower speed
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5
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1K
Jraef
Jraef
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Multiple VFD feeds from Single Disconnect
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6
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1K
Jraef
Jraef
Tainted
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Tap rule clarification needed
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9
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2K
jaggedben
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EM Lighting
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5
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1K
Alexis Enrique
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circuit information on drawings
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5
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1K
rambojoe
rambojoe
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Main Breaker Tripping.. Incorrect Assumptions?
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19
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2K
Mr. Serious
Mr. Serious
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3 phase LED branch circuits- finding amps
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9
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1K
Isaiah
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Disconnect switch Short Circuit Rating
2
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25
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3K
Grouch
Grouch
Tainted
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Alternating operation of 2 motors daily
2
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37
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6K
Randy2718
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Surge voltage
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2
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871
Jraef
Jraef
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OCP protection question
2
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28
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2K
jim dungar
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Instantaneous Water Heaters
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2
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727
rojay
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Minimum Disconnect Switch Size for HVAC RTU
2 3
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50
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6K
Fred B
Fred B
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Question on 695.3(A)(3) (2020 edition) - Dedicated Feeder to Fire Pump
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8
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2K
nhee2
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Overhead to underground service
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5
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1K
tom baker
tom baker
Tainted
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Multiple motor circuit breaker undersized?
2
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22
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2K
don_resqcapt19
don_resqcapt19
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Damaged transmission wire caused by arc incident or contributing cause of arc incident?
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9
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1K
ggunn
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Electrical Service for Apartment Complex
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1
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augie47
augie47
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