Electrical Calculations / Engineering

mbrooke
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Phase and Ground Wire Impedance
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17
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4K
mbrooke
mbrooke
powerpete69
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3000 amp ground fault question
2
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36
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6K
jim dungar
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B
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200 Amp service 170’ away from the meter/disconnect.
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11
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2K
Jerramundi
Jerramundi
R
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Tandem Breakers / Box Fill
2
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22
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5K
Rock86
R
Grouch
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Disconnect switch short circuit rating
2
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25
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16K
Grouch
Grouch
Grouch
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3-tier series rating
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11
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3K
Grouch
Grouch
mbrooke
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Max Circuit Length
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0
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577
mbrooke
mbrooke
M
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480V Fire Pump Fed From 208V Service
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2
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1K
topgone
T
ptonsparky
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Two vacuums
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13
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3K
LarryFine
LarryFine
mbrooke
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Transformer Z value
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13
Views
4K
mbrooke
mbrooke
J
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Circuit breaker usage
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10
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2K
Jraef
Jraef
B
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I'm trying to understand an old engineers report for our apt building's electrical system.
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15
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2K
jusme123
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G
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422.11 E 3
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6
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2K
Greg1707
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T
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Disconnector/Breaker for Auto Transfer Switch
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12
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2K
Jraef
Jraef
E
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Generac transfer switch
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1
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831
LarryFine
LarryFine
M
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NEC 2020 Changes that could increase live to live working distances
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16
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4K
don_resqcapt19
don_resqcapt19
mshields
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Local disconnect for harmonic filter
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1
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1K
Jraef
Jraef
Z
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Mobile Home Park Electrical System wiring
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13
Views
6K
zemingduan
Z
Grouch
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Splicing different insulation types
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6
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1K
Grouch
Grouch
mbrooke
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Metering CT or Protection CT
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19
Views
7K
mbrooke
mbrooke
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