Electrical Calculations / Engineering

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Is a 480 V 3-wire single mains transformerless UPS a separately derived source?
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4
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1K
Matt_from_CA
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A
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Fused disconnect switch
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4
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1K
milmat1
milmat1
JoeStillman
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Cold Sequence Meter Disconnects for Fire Pumps
2
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24
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3K
JoeStillman
JoeStillman
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Diesel Generator Distance from Building
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14
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9K
Birken Vogt
B
Ponchik
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Did I do this correctly?
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4
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735
Ponchik
Ponchik
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Manufacturers Specifications
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2
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725
nizak
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Cable shielding grounding
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12
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3K
Isaiah
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DC distribution panelboard loading schedule and calculations
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2
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914
jaggedben
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240V 150A to 480V ? A
2
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21
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3K
Jraef
Jraef
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Is a voltage doubler economic?
2
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31
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4K
ggunn
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Alley Cat Bad Dog
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Disconnect Switch Arc Flash label
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10
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3K
Jpflex
Jpflex
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Calculation
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10
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1K
ggunn
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Jpflex
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Voltage drop two methods inconsistent
2
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30
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4K
tortuga
tortuga
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Transformer Secondary OCPD
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3
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1K
augie47
augie47
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Crane Disconnect Location
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1
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1K
augie47
augie47
MNSparky
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Mike Holt's Electrical Toolbox app doing dwelling load calcs wrong?
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16
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2K
retirede
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Panelboard Main Breaker Rating < Bus Rating
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8
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2K
dsr
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Dedicated Electrical "Building" Fire Rating
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1
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764
JoeStillman
JoeStillman
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How to comply with 220.87 when replacing existing loads?
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9
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2K
Knightryder12
Knightryder12
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Amperage calculation using 3 phase power
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9
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1K
Julius Right
Julius Right
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