Electrical Calculations / Engineering

LarryFine
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Understanding the Neutral Conductor
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0
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10K
LarryFine
LarryFine
J
Generator Power Factor
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9
Views
453
jonathankpa
J
K
Coefficient of Friction for cable pulling calculations
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3
Views
65
junkhound
junkhound
mshields
250-122 for long feeders
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3
Views
23
powerpete69
powerpete69
E
Motor branch-circuit short-circuit and ground fault protection
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0
Views
16
Erik Jurgens
E
3
Parallel Supply Side Bonding Jumper vs Equipment Grounding Conductor
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6
Views
147
32Laterlaus
3
T
(Historic) Transmission structure with 8 conductors.
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5
Views
156
zbang
Z
A
Phase current Imbalance in 13.8KV Main Incoming CBs
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6
Views
160
adityalagudu3291
A
M
Three 100 amp panels
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9
Views
210
kwired
kwired
mshields
Strobe FA appliances in multi person offices
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5
Views
142
ron
ron
Peakhunter
Adding VFD Power and Motor Power to size Transformer?
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5
Views
124
Jraef
Jraef
art
Tesla Power needs
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19
Views
451
ggunn
G
mshields
What to specify for low voltage power supply
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6
Views
339
patpat
P
S
Calculating kW at Panel
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9
Views
424
RyanEE
R
M
480/277 in power is 200 and i have a115 kva and i want 400 amps out out put is 313 will this work?
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9
Views
175
powerpete69
powerpete69
solarBolt
Can i use Delta-Delta trx with Wye source?
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7
Views
159
Jraef
Jraef
Russell Ensslin
Motor Conductors
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23
Views
2K
sgtsparky
S
W
On demand electric water heaters
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17
Views
2K
kwired
kwired
A
Elevator RLA vs FLA and sizing feeders/OCP
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12
Views
6K
Geon_W
G
Sajid khan
Fuel storage of main reserve
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2
Views
120
Sajid khan
Sajid khan
mbrooke
140% Recloser Trip Coil
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4
Views
222
mbrooke
mbrooke
L
fiquare amp load
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5
Views
127
Lakes Precision
L
S
Laundry mat calculation
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1
Views
85
JoeStillman
JoeStillman
George Stolz
Buck Boost Transformer Question
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23
Views
967
GoldDigger
G
S
Load calculation laundry room
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13
Views
5K
sfork2020
S
A
Three Phase Breaker Single Phase Power
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26
Views
2K
jim dungar
J
K
Voltage drop and the 90 degree column
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50
Views
2K
ggunn
G
C
Sizing a transformer to a motor load
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20
Views
910
retirede
R
G
This forum is blank white page
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9
Views
393
LarryFine
LarryFine
F
Interrupting Rating of a Fuse
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2
Views
221
FaradayFF
F
mbrooke
Islanded Generating Station
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9
Views
617
mbrooke
mbrooke
mshields
Alarms for flammable gas
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3
Views
266
StarCat
StarCat
P
About DFCI breakers
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12
Views
483
LarryFine
LarryFine
kyleapec
Breaker Sizing and HVAC MCA
Replies
39
Views
2K
LarryFine
LarryFine
mbrooke
Load Break Switch?
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0
Views
173
mbrooke
mbrooke
mopowr steve
Newly adjusted lighting load calc
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2
Views
269
mopowr steve
mopowr steve
mbrooke
Fuse Protection of Power Transformers
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12
Views
475
mbrooke
mbrooke
O
Calculating the AIC
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34
Views
2K
don_resqcapt19
don_resqcapt19
G
Generator Transfer Switch and new service
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9
Views
551
Greg1707
G
mbrooke
Magnetizing inrush
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19
Views
789
sgtsparky
S
H
MR Toggle
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4
Views
277
infinity
infinity
G
Interesting discussion
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8
Views
492
Besoeker3
B
mbrooke
Why are Power Grids so Large?
Replies
23
Views
777
mbrooke
mbrooke
publicgood
New Underground Ampacity App!
Replies
0
Views
178
publicgood
publicgood
mbrooke
Highest AIC fuse
Replies
4
Views
236
mbrooke
mbrooke
I
Grounding Study in Refinery
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3
Views
216
JoeStillman
JoeStillman
mbrooke
Substation Cost Comparison
Replies
2
Views
186
mbrooke
mbrooke
bdarnell
Electric Cooking - Optional Calc
Replies
3
Views
189
bdarnell
bdarnell
steve66
HVAC Short Circuit Withstand Rating
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22
Views
569
kwired
kwired
L
VFI MV Transformer
Replies
1
Views
169
ron
ron
E
Surge Arrester Fed by a Breaker
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5
Views
248
petersonra
P
mbrooke
3 phase and 2 phase in the same system
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33
Views
795
winnie
W
JoeStillman
Fault or Inrush Current?
Replies
22
Views
728
JoeStillman
JoeStillman
S
NYC Con Edison Service Switchgear KAIC (SCCR) Rating
Replies
30
Views
5K
infinity
infinity
O
Power Monitor Products
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8
Views
257
Open Neutral
O
I
Voltage Drop across size five starter M coil @120V
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24
Views
459
topgone
T
A
Insulation Test Results
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9
Views
238
Russs57
R
L
UL standard question
Replies
2
Views
129
LMAO
L
mshields
ATS control wiring to temp generator connection point
Replies
0
Views
93
mshields
mshields
F
LV Cable Sizing
Replies
3
Views
158
petersonra
P
mshields
disconnect for heating load (over 300VA)
Replies
4
Views
145
kwired
kwired
L
Fire Pump Feeder
Replies
0
Views
113
lkdiaZ
L
F
LV/MV Protection System Coordination
Replies
4
Views
124
iceworm
iceworm
mbrooke
Voltage for undergrounded distribution
Replies
19
Views
351
mbrooke
mbrooke
D
Can TRIAC dimmers cause lagging power factor?
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3
Views
138
gar
G
F
Standby Generator Load Steps
Replies
0
Views
88
FaradayFF
F
D
1 Ph to 3 Ph converter
Replies
15
Views
454
kwired
kwired
E
Breaker Size for 6000W Electric Patio Heater
Replies
14
Views
306
retirede
R
JoeStillman
VFD on Open Delta Service
Replies
13
Views
276
ptonsparky
P
C
MV Termination
Replies
4
Views
191
Hv&Lv
H
P
Pump seal
Replies
14
Views
213
ptonsparky
P
mbrooke
Balancer Cables in Splice Vault
Replies
0
Views
96
mbrooke
mbrooke
M
Two service entrance feeders tapped from same utilty transformer
Replies
10
Views
240
electrofelon
electrofelon
C
Splices in Underground distribution
Replies
1
Views
173
ptonsparky
P
mshields
Connecticut Electrical Code
Replies
1
Views
147
david luchini
david luchini
E
Delta Wye starter OCPD
Replies
2
Views
140
Jraef
Jraef
T
Feeders Vs Branch Circuits
Replies
35
Views
1K
david luchini
david luchini
N
VA Loading for panel Schedule
Replies
15
Views
718
Isaiah
I
K
Power Factor Correction Add-On Products Viability
Replies
62
Views
2K
Jraef
Jraef
V
UPS and Battery bank.
Replies
5
Views
154
Sahib
S
Shujinko
Natural Gas Generators
Replies
6
Views
256
Open Neutral
O
kda3310
Sizing wires with ambient temperature correction factors.
Replies
6
Views
151
kda3310
kda3310
M
Conduit Run Deflection
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9
Views
349
mak134
M
T
conduit fill
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28
Views
477
Dennis Alwon
Dennis Alwon
mbrooke
Disconnection time 120 volts vs 150 volts
Replies
24
Views
392
Sahib
S
B
Sizing Of Transformer For Robot
Replies
5
Views
154
petersonra
P
J
HVAC Unit loads and demand factors
Replies
58
Views
3K
kwired
kwired
S
4160V Feeders
Replies
5
Views
195
Jraef
Jraef
D
Single phase dryers on 3 phase service
Replies
5
Views
213
Dennis Alwon
Dennis Alwon
mshields
separation of control wiring for Emergency or in this case Hospital EES
Replies
2
Views
91
mshields
mshields
mshields
What rooms need to be 2 hour rated
Replies
3
Views
177
ron
ron
H
Disconnect Voltage
Replies
16
Views
304
ggunn
G
mbrooke
Data Center Power System
Replies
34
Views
725
mbrooke
mbrooke
mbrooke
NEC 517 violation
Replies
42
Views
1K
mbrooke
mbrooke
D
Load calculations for transformer sizing help
Replies
5
Views
194
topgone
T
M
Motor Starter / Disconnected switch
Replies
4
Views
141
paulengr
P
C
Minimum Fault Level??
Replies
1
Views
97
NewtonLaw
N
T
CT Cable Sizing
Replies
9
Views
202
topgone
T
USMC1302
3 Phase Motor Breaker Sizing
Replies
13
Views
292
paulengr
P
A
Voltage Drop Calculations
Replies
14
Views
325
LPS
L
O
PSE
Replies
22
Views
1K
tortuga
tortuga
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