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Feeder Calculation
Data Entry
Load
Amps
Volt-Amps
kVA
Horsepower
Tons (Cooling)
Number of Ground Wires
None
One
Two
System
120V AC
208V AC
277V AC
480V AC
Single Phase
Three Phase
Ground Material
Copper
Aluminum
Phase/Neutral Conductor
Copper
Aluminum
Ground Type
Service
Equipment
Wire Insulation
THHN/THWN/THWN-2
XHHW/XHHW-2/XHH
THHW/THW
RHW/RHW-2/RHH
Maximum Wire Size
#14
#12
#10
#8
#6
#4
#3
#2
#1
#1/0
#2/0
#3/0
#4/0
#250
#300
#350
#400
#500
#600
#700
#750
#800
#900
#1000
Number of Phase Wires
One
Two
Three
Conduit Type
EMT
(RNC) PVC 40
(RNC) PVC 80
(RMC) Rigid GRC
IMC
ENT
Flex
LFMC
(RNC) Type DB-60
(RNC) Type EB-20
Number of Neutral Wires
None
One
Two
Maximum Conduit Size
1/2"
3/4"
1"
1 1/4"
1 1/2"
2"
2 1/2"
3"
3 1/2"
4"
Neutral Carrying Conductor
Power Factor
Load Summary:
283 kVA
|
400 Calcualted Amps
|
400 OverCurrent Amps
Results
Feeder
Load Amps
Maximum Length
2% VD (
5.5 V
)
3% VD (
8.3 V
)
5% VD (
13.8 V
)
2 [(3#3/0Cu, 1#3/0Cu, 1#3Cu) 2" EMT]
100% Load (
400 A
)
146 feet
219 feet
366 feet
80% Load (
320 A
)
183 feet
274 feet
458 feet
Custom Voltage Drop
Feeder:
2 [(3#3/0Cu, 1#3/0Cu, 1#3Cu) 2" EMT]
Length
ft
Anticipated Load
A
Max Volt Drop
%
Actual
13.84 V
(
4.99%
)
... RECALCULATING ...
Notes:
1
For horsepower calculation, motor powerfactor and efficiency are set at 0.90.
2
For cooling ton calculation, no losses are figured in calculation.
3
Voltage Drop is Line to Neutral Calculations and not Line to Line.
No guarantees are made as to the accuracy of the calculation or compliance with local codes. Verify all calculations with a professional engineer. If you find an error, or have a suggestion, please send us an
email
.
Construction Monkey
Product
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Company
Construction Monkey was formed to fill a need in the Construction Industry that has been forming for several years. The industry has become increasingly dominated by General Contractors that subcontract more and more of the work and thus there are more subcontractors providing the real construction services on any given project. These subcontractors are burdened with the risk, performance, safety, quality, and management of the projects being built, while they are in a more competitive market space due to the nearly 800,000 specialty subcontractors in the US alone.
The Monkey is here to help subcontractors perform at top levels in this difficult environment.
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