Calculated Industries ElectriCalc Pro Bedienungsanleitung

User'sGUide — 1

TABLE OF CONTENTS

ELECTRICALC®PRO..........................................................................3

GETTING STARTED............................................................................4

KEY DEFINITIONS.................................................................................4

Basic Function Keys ..........................................................................4

Mode Set-up Keys ..............................................................................5

Electrical Keys ....................................................................................6

Motor Keys..........................................................................................8

Wire Sizing Keys.................................................................................9

Voltage Drop Keys ............................................................................ 11

Grounding Conductor Keys...............................................................12

Fuse/Breaker Keys ...........................................................................13

Conduit Sizing Keys..........................................................................15

PREFERENCE SETTINGS ..................................................................18

BASIC MATH OPERATIONS..........................................................19

PERCENT CALCULATIONS ..........................................................19

MEMORY OPERATIONS .....................................................................19

Using M+...........................................................................................20

Using Memory Storage Keys (M1- M9).............................................20

USING THE ELECTRICALC PRO ....................................................21

KIRCHHOFF’S LAW.............................................................................21

Finding Voltage .................................................................................21

Finding Amps ....................................................................................22

Finding Current Load ........................................................................22

Finding Amps From Kilowatts ...........................................................23

Finding Volt-Amps.............................................................................23

Finding kVA Rating ...........................................................................24

Finding Wattage ...............................................................................24

Finding kW Rating ............................................................................25

OHM’S LAW .........................................................................................26

Finding Volts .....................................................................................26

Finding Amps ....................................................................................26

Finding Resistance (Ohms) ..............................................................27

MOTOR FUNCTIONS ..........................................................................27

Finding Single-Phase Full-Load Current...........................................28

Finding Motor Wire Size and Ampacity.............................................28

Finding Synchronous Motor Horsepower..........................................29

Finding Direct Current Motor Horsepower ........................................30

(cont’d)

2 — electricalc®Pro

AMPACITY WIRE SIZING ....................................................................30

Wire Sizing Based on Insulation Rating............................................31

Re-Sizing Wire Based on Different Insulation Ratings......................32

Wire Sizing Based on Ambient Temperature ....................................32

Wire Sizing Based on Material Type .................................................34

Sizing Parallel Conductors................................................................35

Finding Derated Wire Size................................................................36

Sizing Temperature-Adjusted Derated Wires....................................36

VOLTAGE DROP..................................................................................38

Finding Single-Phase Voltage Drop..................................................38

Finding Three-Phase Voltage Drop...................................................39

Finding Voltage Drop Wire Size........................................................40

Finding Voltage Drop Distance .........................................................41

Finding Voltage Drop Resistance......................................................43

GROUND CONDUCTOR WIRE SIZE..................................................44

EQUIPMENT GROUNDING COUNDUCTOR WIRE SIZE...................45

FUSE AND CIRCUIT BREAKER SIZE .................................................45

STARTER SIZE ....................................................................................47

OVERLOAD PROTECTION SIZE ........................................................47

CONDUIT SIZE ....................................................................................48

Finding Motor Branch-Circuit Wire Size and Conduit Size —

Same Wire Type and Size ................................................................49

Finding Conduit Sizes For Multiple Conductors —

Same Wire Type and Size ................................................................50

Finding Number of Wires in Existing Conduit —

Same Size, Various Types ..............................................................51

Finding Conduit Size —

Multiple Conductors, Different Wire Sizes and Types.......................52

CONVERTING KILOWATT-HOUR AND BTU.......................................53

PARALLEL RESISTANCE ....................................................................54

APPENDIX A — DEFAULT SETTINGS.............................................55

APPENDIX B — PREFERENCE SETTINGS ....................................56

APPENDIX C — 2011 NEC REFERENCES ......................................57

APPENDIX D — CARE INSTRUCTIONS..........................................57

APPENDIX E — ACCURACY/ERRORS,

AUTO SHUT-OFF, BATTERIES, RESET...........................................58

REPAIR AND RETURN......................................................................60

WARRANTY.......................................................................................61

(cont’d)

User'sGUide — 3

ELECTRICALC®PRO

The ElectriCalc®Pro is an invaluable calculator for today’s busy

electrical professional. Unlike a regular calculator, it has intuitively

labeled “electrical keys” and conforms to the 2011 (and 2008, 2005,

2002, 1999, 1996) and future National Electrical Codes, allowing you

to solve Code-related problems quickly and accurately. The most

common NEC tables are now at your ngertips!

An important feature of the ElectriCalc®Pro is that it is programmed

to accept future NEC changes, allowing you to conveniently install

future Code editions in a few simple steps.

The ElectriCalc®Pro instantly solves for:

•

Kirchhoff’s Law

•

Ohm’s Law

•

Volts, Amps, Volt-Amps, Watts, kVA, kW, PF%, EFF%,

and Resistance

•

Copper and Aluminum Wire Sizes

•

Parallel and Derated Wire Sizes

•

Voltage Drop Wire Sizes, % and Actual Voltage Drops,

Voltage Drop Distances and Wire Resistances

•

Kilowatt hours and BTU’s

•

Parallel Resistance

•

Grounding Conductors Sizes

•

Motor Full-Load Amps

•

Overload Protection Sizes

•

NEMA Starter Sizes

•

Conduit Sizes

•

And much more!

4 — electricalc®Pro

GETTING STARTED

You may want to practice getting a feel for your calculator keys by

reading through the key denitions and learning how to enter data,

how to store values, etc., before proceeding to the examples.

KEY DEFINITIONS

Basic Function Keys



On/Clear Key — Turns on power. Pressing once

clears the last entry and the display.

Pressing twice clears all temporary values.



Off — Turns all power off. Clears all non-

permanent values.





Arithmetic operation keys.

-

and



Keys used for entering numbers.



Second Function — Used with other keys to

access secondary functions.



Store —Used for storing values.



-

Storage Registers M1 through M9 — Used to

store values in Memory registers 1 through 9.



Recall — Used with other keys to recall stored

values and settings.



Memory Clear — Clears Accumulative Memory

and displays total.



Accumulative Memory — Adds displayed value

to Accumulative Memory.



Memory Recall — Displays the value saved in

the Accumulative Memory register.

User'sGUide — 5

(cont’d)



Memory Clear (M-R/C) — Clears Accumulative

Memory without changing current display.



Percentage — Used to nd a given percent

of a number.



x2— Squares the value on the display.



Backspace Function — Used to delete entries

one keystroke at a time (unlike the



function,

which deletes the entire entry).



Square Root (

)— Calculates the Square

Root of the number on the display.



Reciprocal (1/x)—Finds the Reciprocal of

a number (e.g.,



0.125).



Clear All — Returns all stored values to the default

settings. Does not affect Preference Settings.



Change Sign (+/–) — Toggle displayed value

between negative and positive value.



Pi — Displays value of

(3.1415927).

Mode Set-up Keys



Preference Settings (Prefs) — Use to

dene calculator modes (see Preference

Settings section).



Single-Phase (1Ø) — Sets calculator to Single-

Phase mode.



Three-Phase (3Ø) — Sets calculator to

Three-Phase mode. This is the default setting.

6 — electricalc®Pro

(cont’d)



Ambient Temperature (Amb°) — Permanently

enters ambient temperature for determining

ampacity-derived Wire Sizes. Ambient temperature

will only change when entering a new value or by

resetting the calculator. Defaults to 30°C (86°F).

Amb will display when the Ambient Temperature is

other than 30°C (86°F).

Note: The temperature units can be displayed in

Celsius (°C) or Fahrenheit (°F) by changing the

Preference Setting (see Preference Settings section).



Copper/Aluminum (Cu/Al) — Used to toggle

between Copper (default) and Aluminum

Wire Types. When the Wire Type is revised,

any calculated Wire Size will be re-calculated

automatically. If a Wire Size is entered with the

wrong Wire Type, pressing



will change

the material type without changing the size.



Free Air (FrAir) — Sets calculator to Free Air

mode, which refers to NEC Table 310.15(B)(17)

for Wire Size calculations.



60°C Wire Insulation — Sets calculator to 60°C

Wire Insulation Type for Wire Size calculations.

This is the default setting.



75°C Wire Insulation — Sets calculator to 75°C

Wire Insulation Type for Wire Size calculations.



90°C Wire Insulation — Sets calculator to 90°C

Wire Insulation Type for Wire Size calculations.

Electrical Keys



kilo- — Used with Watts, Amps, Volts, and

Volt-Amps keys to identify “kilo-” values.

User'sGUide — 7

(cont’d)



milli- — Used with Watts, Amps, Volts, and

Volt-Amps keys to identify “milli-” values.



Amps — Enters or calculates Amps (using Volts

and VA or Watts).



Volts — Enters or calculates Volts (using

Amps, HPth, and VA or Watts). Default value

is 240 Volts.



Volt-Amps — Enters or calculates Volt-Amps

(using Amps, Volts and Horsepower or Watts).



Watts — Enters or calculates Watts (using Amps,

Volts, and VA or Horsepower).



DC Amps (Idc) — Enters or calculates DC Amps

(using DC Volts and Resistance).



DC Volts (Vdc) — Enters or calculates DC Volts

(using DC Amps and Resistance).



DC Resistance (R) — Calculates and displays

DC Resistance in Ohms (using DC Volts and

DC Amps).



Power Factor (PF%) — Enters or calculates

Power Factor percentage (based on Watts

and VA). Default value is 100%. Entered or

calculated Power Factors greater than 100%

will result in an error.



Theoretical Horsepower — Enters or calculates

Theoretical Horsepower (based on Amps, VA,

Watts, Efciency%, PF%, and/or Volts). 1.0 HPth

correlates to 746 Watts at 100% Efciency.

8 — electricalc®Pro

(cont’d)



Efficiency (Eff %) — Enters or calculates the

percent ratio between real power (Watts) and

Theoretical Horsepower. Default value is 100%.

Entered or calculated Efciencies greater than

100% will result in an error.



Kilowatt–Hours to BTU (Kw-hr ►Btu) —

Calculates BTU (British Thermal Unit) based on

an entered Kilowatt-Hour value.



BTU to Kilowatt–Hours (Btu ►Kw-hr) —

Calculates Kilowatt-Hours based on an entered

BTU (British Thermal Unit) value.



Parallel Resistance (Par Res) — Calculates

total Resistance based on an entered series of

Parallel Resistor values.

Motor Keys

The ElectriCalc Pro can be used to determine motor Full-Load Current

(Amps) based on entries for Motor Horsepower (HPmotor), Phase

and Voltage. You can also nd an equivalent Motor Horsepower if you

have entered Voltage and Full-Load Current values. Only HP Motor

and Voltage entries as dened by NEC Tables 430.247, 430.248 and

430.250 can be used to determine motor loads.



Induction/Synchronous/DC Motor Toggle

(Ind/Sync/DC) — Toggles between Induction,

Synchronous, and Direct Current Motor Types.



Motor Horsepower —Enters or calculates

Motor Horsepower.



Starter Size (Starter) — Displays the Starter

Size (from NEMA publication ICS 2-1988 Tables

2-327-1 and 2-327-2) based on the Phase,

Voltage, and Motor Horsepower settings.

Note: Horsepower values not identied in NEMA

tables will cause the calculator to round up to the

next larger Starter Size in the table.

User'sGUide — 9

Wire Sizing Keys

The ElectriCalc Pro uses NEC Table 310.15(B)(16) (310.15(B)(17)

for Free Air) to nd Wire Sizes and Ampacity ratings of wires. The

calculator uses the following data to calculate Wire Size:

1) Insulation temperature rating (60°C, 75°C and 90°C)

2) Wire material (Copper or Aluminum)

3) Ambient Temperature

Standard AWG Wire Sizes and Circular Mils are used by the

ElectriCalc Pro. Wire Size entries less than or equal to 2,000 are

accepted as AWG Wire Sizes; entries greater than 2,000 are

accepted as Circular Mil entries and display the corresponding AWG

Wire Size. Entries must match the standard Wire Sizes or Circular

Mils; otherwise, nonE will be displayed (invalid entry).

Note: 1/0, 2/0, 3/0 and 4/0 wires are entered using the key

(e.g., 0, 00, 000 and 0000).



Wire Size/Ampacity — Enters or calculates Wire

Size based on Ampacity and Voltage Drop, if a

Voltage Drop Length has been entered.

♦ First Press

If a Wire Length has been entered, the rst

press will show the larger of the Ampacity or

Voltage Drop derived Wire Size. The calculator

will use the larger value when calculations

require a Wire Size. If no Voltage Drop Length

has been entered, the calculator will display the

calculated Ampacity-rated Wire Size.

♦ Second Press

If a Wire Length has been entered, the second

press displays the smaller of the two Wire

Sizes. If not solving for Voltage Drop Wire Size,

then displays the maximum Ampacity.

♦ Third Press

Displays the Wire Size in Circular Mils.

(cont’d)

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