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Electrical Calculations / Engineering
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using a 3 phase panel on a 120/240V system
mshields
Feb 15, 2022
Replies
15
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1K
Feb 16, 2022
kwired
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Adding or upgrading a dwelling unit to an existing multifamily dwelling
Tainted
Feb 15, 2022
2
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21
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1K
Feb 15, 2022
winnie
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Calculating amperage
AJones
Feb 14, 2022
2
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20
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2K
Feb 15, 2022
Besoeker3
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45kVA step-up transformer secondary OCPD
kchap
Feb 14, 2022
Replies
5
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777
Feb 14, 2022
petersonra
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NEC 240.4 Rule Question
summoner12
Feb 14, 2022
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1
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459
Feb 14, 2022
Dennis Alwon
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VD question
Tulsa Electrician
Feb 13, 2022
Replies
19
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855
Feb 13, 2022
hillbilly1
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48.8 Hp 480 Motor
Fordean
Feb 9, 2022
2
3
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42
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3K
Feb 13, 2022
Fordean
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Article 220.83(A) - Air-Conditioning Loads
Tainted
Feb 4, 2022
2
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31
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3K
Feb 13, 2022
tortuga
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Auxiliary gutter
Stratdog35
Feb 11, 2022
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2
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714
Feb 11, 2022
don_resqcapt19
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3-phase, 2 speed induction motor
rivecar44
Feb 10, 2022
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474
Feb 10, 2022
Jraef
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Fixed multi-outlet assemblies in a dwelling unit
Blaine25168
Feb 10, 2022
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8
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1K
Feb 10, 2022
LarryFine
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Overcurrent pick up for upstream fault
JabBauer
Feb 10, 2022
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540
Feb 10, 2022
petersonra
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Low voltage communication wire
frofro19
Feb 9, 2022
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13
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589
Feb 9, 2022
don_resqcapt19
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Temporary Power
lookingforhelp
Feb 9, 2022
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5
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738
Feb 9, 2022
zbang
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2017 NEC Example D3(a)
johnson151
Feb 9, 2022
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3
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395
Feb 9, 2022
infinity
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Over current of Fire pump three phase 50 hp, 480v with locked rotor current of 6kw per hp. Control located outside. Question on master electrician xam
sparky915
Feb 4, 2022
Replies
1
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331
Feb 7, 2022
Jraef
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Transformer sizing 3phase 120/208wye - 480 delta
Fordean
Feb 5, 2022
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12
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588
Feb 7, 2022
zbang
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50 or 17 MS transfer switch WCR
electrofelon
Feb 4, 2022
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15
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1K
Feb 7, 2022
jim dungar
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480 volt 3 phase 60HP @48amps Portable power washer
Fordean
Feb 4, 2022
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9
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882
Feb 6, 2022
Fordean
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Help Understanding Ampacities and Parallels, table 310.15(B)(16)
Koplinsky
Feb 2, 2022
2
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30
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2K
Feb 5, 2022
wwhitney
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