Owner's manual

34 — ElectriCalc Pro
The required wire size of a service con-
ductor can be determined based on the
specified electrical requirements and the
w key. The wire size is automatically
recalculated whenever the wire insulation
(temperature) ratings or wire material (cop-
per or aluminum) types are revised. Wire
sizing is based on the requirements
defined in NEC Tables 310-16 and 310-17.
Wire Sizing Based on
Insulation Rating
Wiring is being installed in a 240 Volt,
single-phase system rated at 30 kVA.
What is the wire size needed if you use
60°C copper wire?
Steps Keystrokes Display
Clear calculator
o o 0.
Set to 1-phase
S 1 1 PH
Enter kVA
3 0 K V KVA 30.
Enter Volts
2 4 0 U VOLT 240.
Find Amps
A AMPS 125.
Find wire size
w AWG 0 CU
WIRE SIZE
Display Wire
Ampacity
w 0 125.0 Cu WIRE A
Display CMIL
w CMIL 105,600 WIRE
Display NEC Table
w NEC 310.16
Ampacity Wire Sizing