Electrical Calculations / Engineering

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[Help]Single resistor out of tolerance?
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Enbi
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Derating main OCPD with solar
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winnie
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Motor load calculation, commercial electrical inspector exam
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wlancaster
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How to size transformer (and feeder/OCP) for short duration pulsing load
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gar
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Curiosity for the day.... How/why did we settle on 60hz and not say 400hz?
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petersonra
petersonra
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Watts from ohms one line
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LarryFine
LarryFine
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120/240V 3ph Delta Questions
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ggunn
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Underground Ductbank Ampacity Calc - Very Limiting
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Julius Right
Julius Right
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[Help] Delta connection resistance computation
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Enbi
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Derated Ampacity of Cable - Breaker Size
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GoldDigger
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480V 3 phase to 120/240V single phase Xfmr
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kwired
kwired
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DC System Grounding
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tortuga
tortuga
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Single Phase Transformer: How Does Secondary Load Change Magnetic Flux and Cause Primary Current?
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wwhitney
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Ductbank ampacity calc - does length matter?
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GoldDigger
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208v 3ph Receptacle calculated load
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retirede
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multiple transformer primary protection question
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don_resqcapt19
don_resqcapt19
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UL508A related question
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paulbr
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Conductor sizing for subpanels
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augie47
augie47
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Generator CT's
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qcroanoke
qcroanoke
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Transformer Basic Physics Question
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wwhitney
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