Calculated Industries 5065 Manuale utente

ELECTRICALC

PRO

NEC®COMPLIANT

UPDATEABLE ELECTRICAL CODE CALCULATOR

Model 5065

User’s Guide

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 2008 (and 2005, 2002,

1999, 1996) and future

National Electrical

Codes

, allowing you to solve Code-relat-

ed problems quickly and accurately. The

most common NEC tables are now at

your fingertips!

An important feature of the

ElectriCalc Pro

is that it is programmed to accept future

NEC changes, allowing you to convenient-

ly install future Code editions in a few sim-

ple steps.

Introducing the

ElectriCalc®Pro

Now NEC

-Updateable!

The

ElectriCalc Pro

instantly solves for

the following:

• Kirchhoff’s Law

• Ohm’s Law

• Volts, Amps, Volt-Amps, Watts, kVA,

kW, PF%, EFF%, and Resistance

• Copper or Aluminum Wire Sizes

• Parallel and Derated Wire Sizes

• Voltage Drop Wire Sizes, % and

Actual Voltage Drops, Voltage

Drop Distances and Wire Resis-

tances

• 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!

Table of Contents

Key Definitions . . . . . . . . . . . . . . . . . . . .1

Preference Settings . . . . . . . . . . . . . . . .21

Default Settings . . . . . . . . . . . . . . . . . .22

Basic Math Operations . . . . . . . . . . . . . .23

Percent Calculations . . . . . . . . . . . . . . .23

Memory Operations . . . . . . . . . . . . . . . .24

Kirchhoff’s Law . . . . . . . . . . . . . . . . . . .26

Ohm’s Law . . . . . . . . . . . . . . . . . . . . . .29

Motor Horsepower . . . . . . . . . . . . . . . .31

Ampacity Wire Sizing . . . . . . . . . . . . . .34

Voltage Drop . . . . . . . . . . . . . . . . . . . .41

Ground Conductor Wire Size . . . . . . . . . .47

Equipment Grounding Conductor Wire Size . .48

Fuse and Circuit Breaker Size . . . . . . . . .49

Starter Size . . . . . . . . . . . . . . . . . . . . .49

Overload Protection Size . . . . . . . . . . . .50

Conduit Size . . . . . . . . . . . . . . . . . . . . .51

Converting KW-HR and BTU . . . . . . . . . .56

Parallel Resistance . . . . . . . . . . . . . . . .57

Error Codes . . . . . . . . . . . . . . . . . . . . .58

Battery Information . . . . . . . . . . . . . . . .58

2008 NEC References . . . . . . . . . . . . . .59

Updating Future Code Revisions . . . . . . .60

Settings . . . . . . . . . . . . . . . . . . . . . . . .60

Repair and Return . . . . . . . . . . . . . . . . .61

Warranty . . . . . . . . . . . . . . . . . . . . . . .62

FCC Class B . . . . . . . . . . . . . . . . . . . . .65

Legal Notices . . . . . . . . . . . . . . . . . . . .65

Your

ElectriCalc Pro

is now updateable

for future National Electrical Code®

editions that are updated every three

(3) years. To upgrade your unit, follow

the instructions below:

1) Purchase the NEC Update from CI

(see pricing / details from CI’s Web

site: www.calculated.com or call

1-800-854-8075). This Update is in the

form of a chip that contains the new

Code.

2) Once you receive the NEC Update

chip, you need to install it in your

ElectriCalc Pro:

a) Turn calculator off.

b) As a precaution, remove the bat-

tery (located back of calculator, top

of unit) by sliding battery door out

with your thumbnail. Set aside.

c) Using a screwdriver, pop out the

square tab located in the middle sec-

tion on the back of your calculator.

d) Replace it with the new update tab

by inserting it into the slot.

e) Replace the battery door.

f) Turn calculator on. Your calculator

is now updated and ready to use.

User’s Guide — 1

Standard Calculator Functions

o—

On/Clear

Turns on power. Pressing once clears

the last entry and the display. Pressing

twice clears all non-permanent values.

O —

Off

Turns all power off. Clears the Memory

and most internal registers.

+ - x ÷ =

Arithmetic operation keys.

0 1 2 3 4 5 6 7 8 9 •

Used for keying in numbers.

%—

Percent

Four function (+,-,x,÷) Percent key.

S v —

Reciprocal (1/x)

Finds the reciprocal of a number (e.g.,

8 S v 0.125).

B—

Back Space Function

Used to delete entries one keystroke at

a time (unlike the ofunction, which

deletes the entire entry).

S —

Second Function

Used with other keys to access second-

ary functions.

s—

Store

Used with function keys to store values.

Displays: STOR

Key Definitions

2 — ElectriCalc Pro

r —

Recall

Recalls a value stored in a register (e.g.,

to recall voltage drop % press r v).

Displays: RCL

S + —

Pi (

)

Constant = 3.1415927

S - —

Change Sign (+/–)

Toggles the sign of the displayed value

from positive to negative or from nega-

tive to positive.

S % —

Squares the displayed value.

S B —

Square Root ( )

Square Root function.

s 0 —

Cumulative Memory (M+)

Adds displayed value to Memory (e.g.,

1 0 s 0,2 0 s 0, r 0 =

30). To subtract from Memory, you must

add a negative value to the cumulative

Memory (e.g.,1 0 s 0, 5 S -,

s0, r0 = 5). Clears when the

calculator is shut off.

r 0 —

Memory Recall

Displays the value saved in (

M+

r r —

Display/Clear Memory (M-R/C)

Displays and clears the value saved in

(

M+

Sr—

Clear Memory

Clears the value saved in (

M+

) without

changing displayed value.

User’s Guide — 3

s1-9 —

Memory Storage

When pressed after the skey, the 1

through 9keys will store the displayed

values into non-cumulative Memory.

r1-9

Recall M1 – M9.

Mode Set-up Functions

S x —

Clear All

Clears all values, including Memory.

Resets settings to default values, except

preference settings which are retained.

S ÷ —

Preferences (Prefs)

Use to set default settings or modes

(see “Preference Settings”).

S 1 —

Single-Phase (1Ø)

Sets calculator to single-phase mode.

Displays: 1Ø

S 3 —

Three-Phase (3Ø)

Sets calculator to three-phase mode.

This is the default setting. Displays: 3Ø

S 2 —

Ambient Temperature (AMB°)

Permanently enters ambient tempera-

ture 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). Displays: AMB°

(Cont’d)

4 — ElectriCalc Pro

(Cont’d)

NOTE: The temperature units can be

displayed in Celsius (°C) or Fahrenheit

(°F) by changing the preference setting

(see “Preference Settings”).

S 4 —

Copper/Aluminum (Cu/Al)

Used to toggle between copper (de-

fault) and aluminum wire types. When

the wire type is revised, any calculated

wire size will be re-calculated automati-

cally. If a wire size is entered with the

wrong wire type, pressing S 4 will

change the material type without

changing the size. Displays: Al or Cu

S 5 —

Free Air (FrAir)

Sets calculator into Free Air mode,

which refers to NEC Table 310-17 for

wire size calculations. Displays: FrAir

S 6 —

60°C Wire Insulation

Sets calculator to 60°C wire insulation

type for wire size calculations. This is

the default setting. Displays: 60

S 7 —

75°C Wire Insulation

Sets calculator to 75°C insulation type

for wire size calculations. Displays: 75

S 9 —

90°C Wire Insulation

Sets calculator to 90°C insulation type

for wire size calculations. Displays: 90

User’s Guide — 5

Electrical Functions

K—

kilo-

This key is used with Watts, Amps,

Volts, and Volt-amps keys to identify

“kilo-” values.

S K —

milli-

This key sequence is used with Watts,

Amps, Volts, and Volt-amps keys to

identify “milli-” values.

A—

Amps

Enters or calculates Amps (using Volts

and VA or Watts). Displays: AMPS,

KAMP or mAMP

— Volts

Enters or calculates Volts (using Amps,

HPth, and VA or Watts). Default value is

240 Volts. Displays: VOLT, KV, or mV

V—

Volt-Amps

Enters or calculates Volt-amps (using

Amps, Volts and Horsepower or Watts).

Displays: VA, KVA, or mVA

W—

Watts

Enters or calculates Watts (using Amps,

Volts, and VA or Horsepower).

Displays: WATT, KW, or mW

S A —

DC Amps (Idc)

Enters or calculates DC Amps (using DC

Volts and Resistance). Displays: Idc

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