Electrical Calculations / Engineering

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Main Breaker Tripping.. Incorrect Assumptions?
Replies
19
Views
2K
Mr. Serious
Mr. Serious
I
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3 phase LED branch circuits- finding amps
Replies
9
Views
1K
Isaiah
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Grouch
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Disconnect switch Short Circuit Rating
2
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25
Views
3K
Grouch
Grouch
Tainted
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Alternating operation of 2 motors daily
2
Replies
37
Views
6K
Randy2718
R
O
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Surge voltage
Replies
2
Views
959
Jraef
Jraef
D
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OCP protection question
2
Replies
28
Views
3K
jim dungar
J
G
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Instantaneous Water Heaters
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2
Views
765
rojay
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Minimum Disconnect Switch Size for HVAC RTU
2 3
Replies
50
Views
7K
Fred B
Fred B
N
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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
N
M
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Overhead to underground service
Replies
5
Views
1K
tom baker
tom baker
Tainted
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Multiple motor circuit breaker undersized?
2
Replies
22
Views
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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2K
ggunn
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B
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Electrical Service for Apartment Complex
Replies
1
Views
1K
augie47
augie47
A
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208/120v 3P4W Neutral CCC
Replies
17
Views
4K
topgone
T
Grouch
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Coordination Graph
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15
Views
1K
Grouch
Grouch
C
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XLPE Cable
Replies
5
Views
974
Jraef
Jraef
P
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Combining EGC and GEC into same wire
Replies
5
Views
2K
W@ttson
W@ttson
B
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Standard or Optional calculation
Replies
9
Views
2K
blueheels2
B
don_resqcapt19
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drive isolation transformer
Replies
2
Views
1K
JoeStillman
JoeStillman
Zyb
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HVAC Actual Power Draw
2
Replies
32
Views
4K
JoeStillman
JoeStillman
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