Calculated Industries ElectriCalc Pro User manual

Pocket RefeRence Guide

— 1

ELECTRICALC®PRO

The ElectriCalc®Pro is an invaluable

calculator for today’s busy electrical

professional. It has intuitively labeled

“electrical keys” and conforms to 1996

through 2014 and future National

Electrical Codes. The most common

NEC tables are now at your ngertips!

The ElectriCalc®Pro instantly

solves for:

•

Volts, Amps, Volt-Amps,

Watts, PF%, and EFF%

•

Cu and Al Wire Sizes

•

Parallel and Derated Wire

Sizes

•

Voltage Drop Wire Sizes, and

Lengths

•

Kilowatt hours and BTU’s

•

Parallel Resistance

•

Grounding Conductors

•

Motor FLC

•

Fuse/Breaker Sizes

•

Conduit Sizes

•

And much more!

Pocket RefeRence Guide — 3

TABLE OF CONTENTS

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

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

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

Mode Set-up Keys .................................6

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

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

Wire Sizing Keys....................................8

Voltage Drop Keys .................................9

Grounding Conductor Keys..................10

Fuse/Breaker Keys ..............................10

Conduit Sizing Keys............................. 11

PREFERENCE SETTINGS....................13

BASIC MATH OPERATIONS ............. 14

PERCENT CALCULATIONS.............. 14

MEMORY OPERATIONS.......................14

Using M+..............................................15

Using Memory Storage Keys

(M1- M9) ..............................................15

USING THE ELECTRICALC PRO ...... 15

KIRCHHOFF’S LAW ..............................15

Finding Voltage ....................................16

Finding Amps .......................................16

Finding Volt-Amps................................17

Finding kW Rating ...............................17

OHM’S LAW ...........................................18

Finding Volts ........................................18

Finding Amps .......................................18

Finding Resistance (Ohms) .................19

MOTOR FUNCTIONS ............................20

Finding Full-Load Current ....................20

Finding Motor Wire Size ......................20

AMPACITY WIRE SIZING......................21

Wire Sizing...........................................21

Pocket RefeRence Guide

— 3

Wire Sizing Based on Material Type.......22

Sizing Parallel Conductors...................23

Finding Derated Wire Size ...................24

VOLTAGE DROP ...................................25

Finding Voltage Drop ...........................25

Finding Voltage Drop Wire Size ...........26

Finding Voltage Drop Distance ............27

Finding Voltage Drop Resistance.........28

GROUND CONDUCTOR

WIRE SIZE.............................................29

EQUIPMENT GROUNDING

COUNDUCTOR WIRE SIZE ..................29

FUSE AND CIRCUIT

BREAKER SIZE .....................................30

STARTER SIZE......................................31

OVERLOAD PROTECTION SIZE..........31

CONDUIT SIZE......................................32

Finding Motor Branch-Circuit Wire Size

and Conduit Size —

Same Wire Type and Size ...................33

Finding Conduit Size —

Multiple Conductors, Different Wire Sizes

and Types ............................................34

CONVERTING KILOWATT-HOUR

AND BTU ...............................................35

PARALLEL RESISTANCE......................36

APPENDIX A —

DEFAULT SETTINGS .......................... 37

APPENDIX B —

CARE INSTRUCTIONS ....................... 38

APPENDIX C —

ACCURACY/ERRORS, AUTO

SHUT-OFF, BATTERIES, RESET........ 39

REPAIR AND RETURN........................ 42

Pocket RefeRence Guide — 5

GETTING STARTED

KEY DEFINITIONS

Basic Function Keys

On/Clear Key — Turns on

power, clears the last entry

and clears all temporary

values.

Off — Turns all power off.



 Arithmetic operation keys.

-

and 

Keys used for entering

numbers.

Second Function —

Used to access secondary

functions.

Store —Stores values.



-

Storage Registers —

Store values in Memory.

Recall — Used to recall

stored values and settings.

 Memory Clear — Clears

M+ and displays total.

 M+ — Adds value to

Accumulative Memory.

Pocket RefeRence Guide

— 5

 Memory Recall —

Displays the value

saved in M+.

 Memory Clear (M-R/C)

—Clears M+ without

changing current display.

Percentage — Standard

% function.

 x2— Squares the value

on the display.

Backspace Function

—Used to delete entries

one keystroke at a time.

 !— Calculates the

Square Root of the

displayed value.

 1/x— Finds the

Reciprocal of a number.

 Clear All — Reset all

settings, other than

preferences to default.

 +/– — Toggles sign of

value.

 Pi — Displays value of

(3.1415927).

Pocket RefeRence Guide — 7

Mode Set-up Keys

 Prefs — Use to

dene calculator modes.

 1Ø — Sets calculator to

Single-Phase mode.

 3Ø — Sets calculator to

Three-Phase mode.

 Amb° — Enters ambient

temperature for nding

Wire Sizes.

 Copper/Aluminum

(Cu/Al) — Toggles

between Copper and

Aluminum Wire.

 Free Air (FrAir) — Sets

calculator to Free Air

mode.

 60°C Wire Insulation —

Sets to 60°C Wire.

 75°C Wire Insulation —

Sets to 75°C Wire.

 90°C Wire Insulation —

Sets to 90°C Wire.

Electrical Keys

kilo- — Used to identify

“kilo-” values.

Pocket RefeRence Guide

— 7

(cont’d)

 milli- — Used to identify

“milli-” values.

Amps — Enters or calcu-

lates Amps.

Volts — Enters or

calculates Volts.

Volt-Amps — Enters or

calculates Volt-Amps.

Watts — Enters or

calculates Watts.

 DC Amps (Idc) — Enters

or calculates DC Amps.

 DC Volts (Vdc) — Enters

or calculates DC Volts.

 DC Resistance (R) —

Enters or calculates DC

Resistance in Ohms.

 Power Factor (PF%)

—Enters or calculates

Power Factor.

Theoretical Horsepower

—Enters or calculates

Theoretical Horsepower.

 Efciency (Eff %) —

Enters or calculates the

Power Efciencies.

Pocket RefeRence Guide — 9

 Kw-hr ►Btu —

Converts Kw-hr to Btu.

 BTU to Kilowatt–Hours

(Btu ►Kw-hr) —

Converts Btu to Kw-hr.

 Parallel Resistance

(Par Res) — Calculates

total Resistance of

Parallel Resistors.

Motor Keys

 Ind/Sync/DC — Toggles

between Motor Types.

Motor Horsepower —

Enters or calculates

Motor Horsepower.

 Starter Size (Starter) —

Displays the Starter Size.

Wire Sizing Keys

Wire Size/Ampacity —

Enters or calculates Wire

Size. Additional presses

show smaller wire size

(if Length dened),

Ampacity, Circular Mils,

and referenced table.

(cont’d)

Pocket RefeRence Guide

— 9

(cont’d)

 125% Ampacity — Used

to calculate Wire Size

using 125% of Amps.

Also shows Ampacity,

Circular Mils and NEC

table reference with

repeated presses.

Parallel Size — Provides

Wire Sizes using Parallel

Conductors. A second

press displays the

Ampacity.

 Derated Wire Size (D/R

Size) — Calculates

Derated Wire Sizes given

a number of wires in the

raceway. Also shows

Adjusted Ampacity,

Deration Factor and NEC

table reference.

Voltage Drop Keys

Percent Voltage Drop

—Toggles between

Actual Voltage Drop and

Percent Voltage Drop

with repeated presses.

Length — Enters or

calculates the Length

used for Voltage Drop.

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