Electrical Calculations / Engineering

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250 amp fuse blowing ( 480V 1800 rpm 150hp motor )
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Besoeker
Besoeker
bbaumer
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Using a 25hp VFD on a 30hp motor
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58
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24K
Bob Morris
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Specifying Distribution Step-Down Transformers
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0
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lmcgill
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Need help with receptacle exceptions
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4
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roger
roger
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RACKING BREAKERS
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10
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zog
zog
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112.5 KVA Transformer heat rejection
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30
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topgone
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buck boost xfmr
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2
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broadgage
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Fuses after Circuit Breaker, Coordination
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2
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templdl
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Calculating voltage drop on a 40 HP well pump.
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10
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Crohnos01
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Contractor doing electrical work
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49
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RICK NAPIER
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Potentially useful presentation
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gar
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250.122 and Upsizing for Available Fault Current
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27
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don_resqcapt19
don_resqcapt19
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The VFD is giving Ground Fault ... What might be the possible reasons ?
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5
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danishdeshmuk
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Location of 230V 3phase service
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2
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hurk27
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Section 240.86(C) motor contributions
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4
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2K
piccard1898
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tesla car charging
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9
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5K
Ponchik
Ponchik
crtemp
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Help sizing furnace and heat pump circuits
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3
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3K
crtemp
crtemp
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Does NEC 2011 Chapter 9 Table 5 have the correct conductor properties?
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4
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Dennis Alwon
Dennis Alwon
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Voltage drop on a.c. circuits
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3
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ZZDoug
ZZDoug
ptonsparky
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Cooling load per KW
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15
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8K
GoldDigger
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