Electrical Calculations / Engineering

LarryFine
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Understanding the Neutral Conductor
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0
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10K
LarryFine
LarryFine
D
Parking garage of Apt. Building
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0
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1
designer82
D
mshields
Strobe FA appliances in multi person offices
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7
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175
mshields
mshields
M
Three 100 amp panels
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14
Views
371
electrofelon
electrofelon
R
Grounding in relation to voltage drop wire sizing
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4
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121
kwired
kwired
mshields
250-122 for long feeders
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14
Views
240
Carultch
C
J
Generator Power Factor
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12
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529
kwired
kwired
A
CT Shorting Block connection
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22
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2K
Hv&Lv
H
E
Motor branch-circuit short-circuit and ground fault protection
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1
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78
Jraef
Jraef
T
(Historic) Transmission structure with 8 conductors.
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6
Views
219
PaulMmn
PaulMmn
K
Coefficient of Friction for cable pulling calculations
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3
Views
101
junkhound
junkhound
3
Parallel Supply Side Bonding Jumper vs Equipment Grounding Conductor
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6
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184
32Laterlaus
3
A
Phase current Imbalance in 13.8KV Main Incoming CBs
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6
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188
adityalagudu3291
A
Peakhunter
Adding VFD Power and Motor Power to size Transformer?
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5
Views
145
Jraef
Jraef
art
Tesla Power needs
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19
Views
497
ggunn
G
mshields
What to specify for low voltage power supply
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6
Views
370
patpat
P
S
Calculating kW at Panel
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9
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477
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
199
powerpete69
powerpete69
solarBolt
Can i use Delta-Delta trx with Wye source?
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7
Views
183
Jraef
Jraef
Russell Ensslin
Motor Conductors
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23
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2K
sgtsparky
S
W
On demand electric water heaters
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17
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2K
kwired
kwired
A
Elevator RLA vs FLA and sizing feeders/OCP
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12
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6K
Geon_W
G
Sajid khan
Fuel storage of main reserve
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2
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120
Sajid khan
Sajid khan
mbrooke
140% Recloser Trip Coil
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4
Views
223
mbrooke
mbrooke
L
fiquare amp load
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5
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135
Lakes Precision
L
S
Laundry mat calculation
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1
Views
87
JoeStillman
JoeStillman
George Stolz
Buck Boost Transformer Question
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23
Views
980
GoldDigger
G
S
Load calculation laundry room
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13
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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
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2K
ggunn
G
C
Sizing a transformer to a motor load
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20
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919
retirede
R
G
This forum is blank white page
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9
Views
395
LarryFine
LarryFine
F
Interrupting Rating of a Fuse
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2
Views
222
FaradayFF
F
mbrooke
Islanded Generating Station
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9
Views
618
mbrooke
mbrooke
mshields
Alarms for flammable gas
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3
Views
268
StarCat
StarCat
P
About DFCI breakers
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12
Views
486
LarryFine
LarryFine
kyleapec
Breaker Sizing and HVAC MCA
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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
270
mopowr steve
mopowr steve
mbrooke
Fuse Protection of Power Transformers
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12
Views
476
mbrooke
mbrooke
O
Calculating the AIC
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34
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2K
don_resqcapt19
don_resqcapt19
G
Generator Transfer Switch and new service
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9
Views
552
Greg1707
G
mbrooke
Magnetizing inrush
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19
Views
793
sgtsparky
S
H
MR Toggle
Replies
4
Views
277
infinity
infinity
G
Interesting discussion
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8
Views
494
Besoeker3
B
mbrooke
Why are Power Grids so Large?
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23
Views
779
mbrooke
mbrooke
publicgood
New Underground Ampacity App!
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0
Views
179
publicgood
publicgood
mbrooke
Highest AIC fuse
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4
Views
237
mbrooke
mbrooke
I
Grounding Study in Refinery
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3
Views
218
JoeStillman
JoeStillman
mbrooke
Substation Cost Comparison
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2
Views
186
mbrooke
mbrooke
bdarnell
Electric Cooking - Optional Calc
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3
Views
189
bdarnell
bdarnell
steve66
HVAC Short Circuit Withstand Rating
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22
Views
571
kwired
kwired
L
VFI MV Transformer
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1
Views
170
ron
ron
E
Surge Arrester Fed by a Breaker
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5
Views
251
petersonra
P
mbrooke
3 phase and 2 phase in the same system
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33
Views
810
winnie
W
JoeStillman
Fault or Inrush Current?
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22
Views
730
JoeStillman
JoeStillman
S
NYC Con Edison Service Switchgear KAIC (SCCR) Rating
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30
Views
5K
infinity
infinity
O
Power Monitor Products
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8
Views
262
Open Neutral
O
I
Voltage Drop across size five starter M coil @120V
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24
Views
470
topgone
T
A
Insulation Test Results
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9
Views
243
Russs57
R
L
UL standard question
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2
Views
133
LMAO
L
mshields
ATS control wiring to temp generator connection point
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0
Views
98
mshields
mshields
F
LV Cable Sizing
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3
Views
162
petersonra
P
mshields
disconnect for heating load (over 300VA)
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4
Views
151
kwired
kwired
L
Fire Pump Feeder
Replies
0
Views
116
lkdiaZ
L
F
LV/MV Protection System Coordination
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4
Views
128
iceworm
iceworm
mbrooke
Voltage for undergrounded distribution
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19
Views
357
mbrooke
mbrooke
D
Can TRIAC dimmers cause lagging power factor?
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3
Views
144
gar
G
F
Standby Generator Load Steps
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0
Views
91
FaradayFF
F
D
1 Ph to 3 Ph converter
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15
Views
455
kwired
kwired
E
Breaker Size for 6000W Electric Patio Heater
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14
Views
312
retirede
R
JoeStillman
VFD on Open Delta Service
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13
Views
283
ptonsparky
P
C
MV Termination
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4
Views
195
Hv&Lv
H
P
Pump seal
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14
Views
217
ptonsparky
P
mbrooke
Balancer Cables in Splice Vault
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0
Views
99
mbrooke
mbrooke
M
Two service entrance feeders tapped from same utilty transformer
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10
Views
245
electrofelon
electrofelon
C
Splices in Underground distribution
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1
Views
177
ptonsparky
P
mshields
Connecticut Electrical Code
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1
Views
150
david luchini
david luchini
E
Delta Wye starter OCPD
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2
Views
144
Jraef
Jraef
T
Feeders Vs Branch Circuits
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35
Views
1K
david luchini
david luchini
N
VA Loading for panel Schedule
Replies
15
Views
722
Isaiah
I
K
Power Factor Correction Add-On Products Viability
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62
Views
2K
Jraef
Jraef
V
UPS and Battery bank.
Replies
5
Views
156
Sahib
S
Shujinko
Natural Gas Generators
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6
Views
260
Open Neutral
O
kda3310
Sizing wires with ambient temperature correction factors.
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6
Views
156
kda3310
kda3310
M
Conduit Run Deflection
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9
Views
350
mak134
M
T
conduit fill
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28
Views
479
Dennis Alwon
Dennis Alwon
mbrooke
Disconnection time 120 volts vs 150 volts
Replies
24
Views
397
Sahib
S
B
Sizing Of Transformer For Robot
Replies
5
Views
157
petersonra
P
J
HVAC Unit loads and demand factors
Replies
58
Views
3K
kwired
kwired
S
4160V Feeders
Replies
5
Views
196
Jraef
Jraef
D
Single phase dryers on 3 phase service
Replies
5
Views
214
Dennis Alwon
Dennis Alwon
mshields
separation of control wiring for Emergency or in this case Hospital EES
Replies
2
Views
97
mshields
mshields
mshields
What rooms need to be 2 hour rated
Replies
3
Views
185
ron
ron
H
Disconnect Voltage
Replies
16
Views
306
ggunn
G
mbrooke
Data Center Power System
Replies
34
Views
732
mbrooke
mbrooke
mbrooke
NEC 517 violation
Replies
42
Views
1K
mbrooke
mbrooke
D
Load calculations for transformer sizing help
Replies
5
Views
197
topgone
T
M
Motor Starter / Disconnected switch
Replies
4
Views
150
paulengr
P
C
Minimum Fault Level??
Replies
1
Views
101
NewtonLaw
N
T
CT Cable Sizing
Replies
9
Views
205
topgone
T
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