Calculated-industries 5070-A User Guide Manual de usuario descargar pdf (Pagina 14)

User's GUide — 13

(cont’d)

♦ Second Press

Displays the aluminum Grounding

conductor size.

♦ Third Press

Displays the NEC table referenced for

the calculation.

Fuse/Breaker Keys

The ElectriCalc Pro has special keys that automatically calculate the

Amp ratings of the following over-current protection devices: Dual

Element Fuses (Time Delay), Single Element Fuses (Non-Time

Delay), Instantaneous Trip Breakers (Type 1), Inverse Time Breakers

(Type 2), and Overload Protection Devices.

These Fuse and Circuit Breaker sizes are derived using the “Percent

of Full-Load Current” multipliers listed in NEC Table 430.52.

If a parameter is missing or invalid, the calculator will display nonE.



Overload Protection —

♦ First Press

Displays the Overload Amperage requirement

based on the Full-Load Current shown on the

motor nameplate. Multiplies the entered

motor nameplate Full-Load Current

(stored in the



the value you enter.

Conforms to NEC Section 430.32(A)(1) value

of 115%, unless you enter another value. For

example, entering 125



would calculate

Overload protection based on 125% of the

entered Amperage.

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Calculated-industries 5070-A User Guide Manual de usuario Pagina 14