50 — ElectriCalc Pro
Fuse and Circuit Breaker Size
What is the computed dual element
and single element fuse size for a 230
volt, 3-phase, 50 HP induction motor?
What are the Instantaneous Trip and
Inverse Time Circuit Breaker require-
ments?
Steps
Keystrokes
Display
Reset calculator
[On/C]
0.
Enter volts
230 [Volts]
230. VOLT
Enter hp
50 [HPmotor]
50. HP IND
Find full current
[Amps]
130. FLC A
Find DE fuse size
[DEFuse]
227.5
dE AMPS
Display % used
[DEFuse]
175. %FLC
Find SE fuse size
[Set] [DEFuse]
390.
SE AMPS
Display % used
[DEFuse]
300. %FLC
Find inv. time brkr [InvTime]
325. b2 AMPS
Display % used
[InvTime]
250. %FLC
Find ins. trip
breaker sz.
[Set] [InvTime]
1,040.
b1 AMPS
Display % used
[InvTime]
800. %FLC
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