Calculated Industries ElectriCalc Pro User Manual - — 15

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♦ Second Press 

Displays the Full-Load Current percent 

multiplier value used to determine Fuse size. 

Subsequent presses repeat this cycle.

inverse time Breaker —

♦ First Press 

Displays the minimum Amp rating for an 

Inverse Time Breaker, based on the Phase, 

Motor Type, and Amperage.

♦ Second Press  

Displays the Full-Load Current percent multiplier 

value used to determine Breaker Size.

instantaneous trip circuit Breaker (instrip) —

♦ First Press 

Displays the minimum Amp rating for an 

Instantaneous Trip Circuit Breaker, based on 

the Phase, Motor Type, and Amperage.

♦ Second Press  

Displays the Full-Load Current percent multiplier 

value used to determine Breaker Size.

Conduit sizing Keys

The ElectriCalc Pro calculates Conduit Size using NEC Tables 1, 4 

and 5 of Chapter 9 (given Insulation Type, Wire Size, and quantity 

of Wires). It will also calculate the Number of Wires of a specified 

Insulation Type and Wire Size that will fit in a defined Conduit Size. 

Acceptable Conduit Sizes (depending on the type of Conduit used) 

are as follows: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 3-1/2", 4", 

5", and 6". Conduit Sizes are entered using decimal equivalents (e.g., 

1-1/2" is entered as 1.5, 3/4" is entered as 0.75, etc.).