Calculated Industries 5060 - Manual (Page 56)

54 — ElectriCalc Pro
Overload Protection Size
What overload protection device size is
required for a 460 volt, 3-phase, 15 HP
induction motor with a nameplate cur-rent
rating of 19.2 amps and a 1.0 ser-vice fac-
tor? What is the required overload rating at
125% (for a 1.15 service factor)?
Steps Keystrokes Display
Clear calculator
o o
0.
Enter volts
460 U
VOLT 460.
Enter horsepower
15 h
IND 15. HP
Enter nameplate
current
19•2 A AMPS 19.2
Find overload size
L
AMPS 22.08 ol
Display % used
L
%FLC 115.
Find 125% load
125 L AMPS 24. ol
Display % used
L
%FLC 125.
Conduit Size
The ElectriCalc Pro can calculate the
size of conduit required when running
single or multiple wires using the
C
key and the calculator’s internal tables.
The calculator uses NEC values for
area of THW, THHN, and XHHW wires.
When using the actual wire areas (and
following the guidelines in NEC
Chapter 9, Tables 1, 3, 4 and 5), the
calculator can calculate a conduit size
based on the conduit type and the
same or different wire types and sizes.