Calculated Industries 5070 ElectriCalc Pro Reference Guide

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 fingertips!

The ElectriCalc solves for:

® Pro instantly

• 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!

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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

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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

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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.

  

 



-

 and 

Arithmetic operation keys.

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.

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  Memory recall —

Displays the value saved in M+.

  Memory clear (M-r/c)

— Clears M+ without changing current display.



 



  percentage — Standard

% function.

x 2 — 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).

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Mode Set-up Keys

  prefs — Use to define calculator modes.

 

 

 

 

1Ø — Sets calculator to

Single-Phase mode.

3Ø — Sets calculator to

Three-Phase mode. amb° — Enters ambient temperature for finding

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.

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  milli- — Used to identify

“milli-” values.

 amps — Enters or calculates 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.

 

Efficiency (Eff %) —

Enters or calculates the

Power Efficiencies.

(cont’d)

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(cont’d)

 

 

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 defined),

Ampacity, Circular Mils, and referenced table.

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  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.

(cont’d)

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(cont’d)

 

Wire resistance

(Wire res) — Displays the Wire Resistance per

1,000 Feet.

Grounding Conductor Keys



Ground — Displays the

Copper and Aluminum grounding electrode sizes given an entered Wire

Size. Also shows Wire

Circular Mils and NEC reference with additional key presses.

  equipment Ground

(eqGrnd) — Provides the Copper Equipment

Ground size given an entered Wire Size.

Additional key presses show Aluminum Ground

Size and the NEC reference.

Fuse/Breaker Keys

 overload protection

— Enters a percent

Overload Factor and shows the Overload required based on stored

Amps. The percent multiplier is shown on the second key press.

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  Motor type (M-type)

— Displays the current

Motor Type for use with

Breaker/Fuse sizing.

Additional presses toggle between Motor Types.

 Dual element Fuse

 

Single element Fuse

(SeFuse)

 inverse time Breaker

  instantaneous trip circuit Breaker (instrip)

— Displays the minimum

Amp rating and percent multipier.

Conduit Sizing Keys







,

, Number of Wires —

Used to enter or calculate the Number of Wires in a raceway and calculate

Wire Area. Also shows total Number of Wires and the total area of all wires entered.

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(cont’d)

(cont’d)

 conduit Size — Enters or calculates Conduit

Size. Additional presses show the total number of

Wires, Percent Fill, Total

Wire Area and remaining

Wire Area when Conduit

Size is calculated.

  conduit type (cond type) — Defines

Conduit Type by entering the number correlating to the Types shown below. Repeated presses of   also toggles through the

Conduit Types.

1) EMT

2) ENT

3) FMC

4) IMC

5) LFNB

6) LFNA

7) LFMC

8) RMC

9) P-80

10) P-40

11) P-A

12) P-EB

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PRefeRenCe seTTInGs

Press  , then  to access the

Preferences. Continue pressing

 to toggle through different settings.

Press  or  keys to toggle between options. Press any other key to exit Preferences.

KEYSTROKE DISPLAY

  (Prefs )

(NEC Code)













 (repeats options)

NEC 2014

NEC 1996

NEC 1999

NEC 2002

NEC 2005

NEC 2008

NEC 2011

NEC 2014

Second press of

(Ambient





Temperature Units)

:

AMBº 30. ºC

AMBº 86. ºC

 (repeats options) AMBº 30. ºC

Third press of

(Length Units)

 :



 (repeats options)

FEET 1.

MET 1.

FEET 1.

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basIC maTh oPeRaTIons

This calculator uses standard chaining logic, calculating values in order entered.

KEYSTROKE

   

   

   

   

DISPLAY

5.

1.

6.

1.5

PeRCenT CalCulaTIons

The



key can be used for finding a given percentage of a number or for working add-on, discount or division percentage calculations.

KEYSTROKE

      

   

   

    

      

DISPLAY

53.25

266.25

23.75

200.

memoRY oPeRaTIons

The Cumulative Memory is located above  . Single value storage positions can also be found within digits



through



.

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using M+

KEYSTROKE

1. Add to Memory:

     (M+)

   

   (M+)

2. Recall Total:

 

 

DISPLAY

M+ 355.

M+ –255.

&

&

 

TTL 100. &

AVG 50. &

CNT 2. &

3. Display/Clear Memory:

  100.

using Memory Storage Keys (M1- M9)

KEYSTROKE

    

 

 

DISPLAY

M-1 175.

0.

M-1 175. uSING ThE electricalc pro

KIRChhoff’s laW

The ElectriCalc Pro can easily find

Volts, Amps, VA, Watts, HP (theoretical),

Efficiency and Power Factor.

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Finding Voltage

Find the Voltage supply to a 1Ø load drawing 14,605 VA and 115 Amps.

KEYSTROKE

 

DISPLAY

0.

1. Set to 1-Phase:

  (1Ø)

1 Ø 1 Ph

2. Enter VA:

     

3. Enter Amps:

   

VA 14,605.

AMPS 115.

4. Solve for Volts:

 VOLT 127.

Finding Amps

What is the current for a load drawing

8,250 VA on a 240V, 3Ø circuit?

KEYSTROKE

 

DISPLAY

0.


  (3Ø)

2. Enter VA:

    

3Ø 3 Ph

VA 8,250.

3. Enter Volts:

   

4. Solve for Amps:



VOLT 240.

AMPS 19.846416

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Finding Volt-Amps

What is the VA rating for a 120 Volt,

22 Amp, 1Ø circuit?


  0.


  (1Ø)

1 Ø 1 Ph

2. Enter Volts:

    VOLT 120.

3. Enter Amps:

   AMPS 22.

4. Solve for Volt-Amps:

 VA 2,640.

Finding kW Rating

What’s the kW rating for a 90 Amp,

208V, 3Ø boiler with 100% Power

Factor?

KEYSTROKE

 

DISPLAY

0.


  (3Ø)

3Ø 3 Ph

2. Set Power Factor:

     (PF%) PF% 100.

3. Enter Amps:

   AMPS 90.

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(cont’d)

(cont’d)

KEYSTROKE

4. Enter Volts:

   

5. Solve for kW:

 

DISPLAY

VOLT 208.

KW 32.423991

ohm’s laW

The ElectriCalc Pro uses Ohm’s Law solve for DC Voltage, Current, or

Resistance.

Finding Volts

The Current in a circuit is 0.0125 Amps, and the total Resistance is 480 Ohms.

Find the Voltage.

KEYSTROKE

 

DISPLAY

0.

1. Enter Current:

    

  (Idc) Idc 0.0125

A

2. Enter Resistance:

  

  (R) OhMS 480.

3. Find Voltage:

  (Vdc) Vdc 6.

V

Finding Amps

A 120k electrical resistor is plugged into a 12 volt circuit. Find the Current.

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KEYSTROKE

 

DISPLAY

0.

1. Enter Resistance:

   

  (R)

2. Enter Voltage:

 

  (Vdc)

KOhM 120.

Vdc 12.

V

3. Find Current:

  (Idc) Idc 0.0001

A

Finding Resistance (Ohms)

An electrical circuit operating at 240

Volts has a Current of 14.6 Amperes.

Find the total Resistance.

KEYSTROKE

 

DISPLAY

0.

1. Enter Voltage:

  

  (Vdc) Vdc 240.

V

2. Enter Current:

   

  (Idc) Idc 14.6

A

3. Find Resistance:

  (R) OhMS 16.438356

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MOTOR FuNCTIONS

The ElectriCalc Pro can calculate the Full-Load Current (Amps) of a motor, based on Phase, Voltage and

Motor (Synchronous, Induction, or

DC) Horsepower using NEC Tables

430.247, 430.248 and 430.250.

Finding Full-Load Current

A 2 HP Induction motor operates on

230 Volt, Single-Phase power. What is the Full-Load Current for this motor?

KEYSTROKE

 


  (1Ø)

DISPLAY

0.

1 Ø 1 Ph

2. Enter Volts:

    VOLT 230.

3. Enter HP:

  IND* 2. hP

* Press   until iND is displayed in the upper left area of the display.

4. Find Full-Load Current:

 FLC 12.

A

Finding Motor Wire Size

Find the Wire Size required to connect a continuous run, 3Ø, 10 HP Induction motor into a 230V circuit.

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KEYSTROKE

 

DISPLAY

0.


  (3Ø)

3Ø 3 Ph

2. Set to 60º C:

  (60º)

4. Enter Volts:

   

3Ø 60 3 Ph

3. Set to Copper (if necessary):

  (Cu/Al)

3Ø 60 Cu 3 Ph

VOLT 230.

5. Enter HP:

   IND* 10. hP



 FLC 28.

A

7. Find 125% Ampacity Wire Size:

  (125%)

WIRE SIZE 125% amPaCITY WIRe sIZInG

Wire Sizing is based on Ampacity requirements used in NEC Tables

310.15(B)(16) and 310.15(B)(17).

Wire Sizing

Wiring is being installed for a 240V,

1Ø system rated at 30 kVA. What is the 60° C Copper Wire Size?

(cont’d)

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(cont’d)

KEYSTROKE

 

DISPLAY

0.


  (1Ø)

2. Set to 60º C:

  (60º)

1 Ø

1 Ph

4. Enter kVA:

   

1 Ø 60 1 Ph


  (Cu/Al)

1 Ø 60 Cu 1 Ph

KVA 30.

5. Enter Volts:

    VOLT 240.

6. Find Amps:

 AMPS 125.

7. Find Wire Size:

 AWG 0 Cu WIRE SIZE

Wire Sizing Based on Material Type

Find the Wire Size for a 75°C Copper

Wire carrying a 3Ø load of 265 Amps.

What is the equivalent Aluminum

Wire Size?

KEYSTROKE

 

DISPLAY

0.


  (3Ø)

2. Set to 75º C:

  (75º)

3Ø 3 Ph

3Ø 75 3 Ph

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  (Cu/Al)

3Ø 75 Cu 3 Ph

4. Enter Amps:

    AMPS 265.



6. Change to Aluminum:

  (Cu/Al) AWG 400 AL WIRE SIZE

Sizing Parallel Conductors (Free air)

What size 60°C insulated Copper

Wire is required for a single conductor carrying a 500 Amp load in a Free

Air environment (30°C Ambient

Temperature.)? What size for two

Parallel conductors?

KEYSTROKE

 

DISPLAY

0.

1. Set to 60º C:

  (60º)

60 0.


  (Cu/Al)

60 Cu 0.

3. Set to Free Air mode:

  (FrAir) 60 Cu FrAir 0.

4. Enter Amps:

    AMPS 500.

5. Find Wire Size for one conductor:


(cont’d)

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(cont’d)


6. Find Wire Size for two conductors:

  PAR 000 Cu WIRE SIZE

7. Exit Free Air Mode and Clear:

   60 Cu 0.

Finding Derated Wire Size

A circuit was built with 60°C Copper wire connecting a 47,650 VA load to a 240 Volt, 3Ø source. Ambient

Temperature is 50°C. What is the

Derated Wire Size required if eight current-carrying THHN wires are installed in the raceway?

KEYSTROKE

 

DISPLAY

0.


  (3Ø)

6. Find Amps:



3Ø 3 Ph

2. Set to 60º C:

  (60º)

5. Enter Volts:

   

3Ø 60 3 Ph


 

( Cu/Al )

3Ø 60 Cu

3 Ph

4. Enter Volt-Amps:

      VA 47,650.

VOLT 240.

AMPS 114.62808.

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7. Set to 50º C Ambient Temperature:

   

( Ambº )

Amb AMB° 50. ºC

8. Find Derated Wire Size:

  

(D/R Size) D/R 500 Cu WIRE SIZE

9. Reset Ambient Temperature and Clear:

     3Ø 60 Cu 0.

VolTaGe DRoP

The ElectriCalc Pro uses Resistance values found in NEC Table 8 Chapter

9 to determine Voltage Drop, Wire

Lengths or Wire Sizes given a maximum Voltage Drop percentage.

Finding Voltage Drop

You are installing 175 Feet of 75°C,

#8 THW branch circuit Copper conductors to supply an 11A load on a

208V 1Ø system. What is the source

Voltage Drop at the load?

KEYSTROKE

 

DISPLAY

0.


  (1Ø)

1 Ø 1 Ph

2. Set to 75 º C:

  (75º)

1 Ø 75 1 Ph

(cont’d)

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(cont’d)



  (Cu/Al)

1 Ø 75 Cu 1 Ph

4. Enter Amps:

   AMPS 11.

5. Enter Volts:

    VOLT 208.

6. Enter Length:

   

8. Solve Voltage Drop:



FEET 175.

7. Enter Wire Size:

  AWG 8 Cu

WIRE SIZE

DROP 3.0 V

9. Solve percent Voltage Drop:

 DROP 1.4 % V

Finding Voltage Drop Wire Size

A 20 Amp, 3Ø 208 Volt load will be located 175 Feet away from the source.

Assuming a 3% allowable Voltage Drop, what is the size of 75°C conductor required for this branch circuit?

KEYSTROKE

 


  (3Ø)

DISPLAY

0.

3Ø Ph

2. Set to 75º C:

  (75º C) 3Ø 75 3 Ph

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  (Cu/Al)

3Ø 75 Cu 3 Ph

4. Enter Amps:

   AMPS 20.

5. Enter Volts:

    VOLT 208.

6. Enter Length:

    FEET 175.

7. Enter allowable VD%:

  DROP 3.0 % V


 AWG 8 Cu VD WIRE SIZE

Finding Voltage Drop Distance

How far from a Three-Phase 240

Volt source can you install a 15 Amp load using 60°C #10 Copper branch circuit conductors? Assume a 3% allowable Voltage Drop.

KEYSTROKE

 

DISPLAY

0.


  (3Ø)

2 Set to 60º C:

  (60º)

3Ø 3 Ph

3Ø 60 3 Ph


  (Cu/Al)

3Ø 60 Cu 3 Ph

(cont’d)

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(cont’d)

KEYSTROKE

4. Enter Amps:

  

DISPLAY

AMPS 15.

5. Enter Volts:

    VOLT 240.


   * AWG 10 Cu WIRE SIZE

7. Enter 3% allowable Voltage Drop:

  DROP 3.0 % V

8. Find distance:

 FEET 234.86987

Finding Voltage Drop Resistance

What is the Resistance per 1,000 Ft. of #2 90° C Copper conductor?

KEYSTROKE

 

DISPLAY

0.

1. Set to 90º C:

  (90º) 90 0.


  (Cu/Al)

90 Cu 0.


 

* AWG 2 Cu WIRE SIZE

4. Find Resistance:

 

(Wire Res) OhMS 0.2033993

WIRE

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GRounD ConDuCToR

WIRe sIZe

The ElectriCalc Pro uses NEC Table

250.66 to find the Grounding Electric

Conductor Size for an entered Feeder

Size.

Find the Grounding electrode conductor Wire Size required when a 2/0 Copper service-entrance conductor is being used.

KEYSTROKE

 

DISPLAY

0.

1. Enter Wire Size and find Ground

Wire Size:

   GRND 4 Cu WIRE SIZE

2. Find Aluminum size:

 GRND 2 AL WIRE SIZE eQuIPmenT GRounDInG

CounDuCToR WIRe sIZe

The ElectriCalc Pro uses an external amperage to find the Equipment

Grounding conductor based on NEC

Table 250.122.

Find the Equipment Grounding conductor size required when the circuit breaker is rated at 45 Amps.

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(cont’d)

(cont’d)

KEYSTROKE

 

DISPLAY

0.

1. Find Equipment Ground Wire Size:

  

 (EqGrnd) EQPG 10 Cu WIRE SIZE

2. Find Aluminum size:

 EQPG 8 AL WIRE SIZE fuse anD CIRCuIT bReaKeR sIZe

Fuse and Breaker sizing is determined by NEC Table 430.52.

Once the Motor Type is defined via

 

, a Full-Load Current amperage value can be used to find the Fuse Breaker Sizes.

What is the Dual Element Fuse size for a 230 Volt, 3-Phase, 50 HP

Induction motor?


  0.


  (3Ø)

3Ø 3 Ph

2. Enter Volts:

    VOLT 230.

3. Enter HP:

   IND* 50. hP

* Press

 

until iND is displayed in the upper left area of the display.

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 FLC 130. A

5. Find Dual Element Fuse size:

 AMPS 227.5 dE sTaRTeR sIZe

What size NEMA Starter is required for a 575 Volt, 3Ø, 20 HP

Induction motor?

KEYSTROKE

 

DISPLAY

0.

1. Set to 3-phase:

  (3Ø)

2. Enter Volts:

   

3Ø 3 Ph

VOLT 575.

3. Enter HP:

   IND* 20. hP


4. Solve for Starter Size:

  (Starter) STAR SIZE 2 oVeRloaD PRoTeCTIon sIZe

What Overload Protection device size is required for an Induction motor with a nameplate rating of 19.2 Amps and a 1.0 service factor? What is the required Overload at 125% (for a 1.15 service factor)?

(cont’d)

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(cont’d)

KEYSTROKE

 

DISPLAY

0.

1. Enter nameplate Current:

     AMPS 19.2

2. Find Overload size:

    AMPS 22.08 o l

3. Display percent used:

 %FLC 115. %

4. Find 125% Load:

    AMPS 24. o l

5. Display percent used:

 %FLC 125. %

6. Reset Overload rating and Clear:

     0.

ConDuIT sIZe

The ElectriCalc Pro can calculate the size of Conduit required when running single or multiple Wires using the

  key and the calculator’s internal tables. To select a specific Conduit

Type, enter the corresponding number of the Conduit as shown below and then press   .

1) EMT 4) IMC 7) LFMC 10) P-40

2) ENT 5) LFNB 8) RMC 11) P-A

3) FMC 6) LFNA 9) P-80 12) P-EB

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Finding Motor Branch-Circuit Wire

Size and Conduit Size — Same Wire type and Size

What size THHN Copper Wire and

RMC Conduit are needed to connect a 10 HP 1Ø Induction motor to a 115

Volt source?

KEYSTROKE

 

DISPLAY

0.


  (1Ø)

1 Ø 1 Ph

2. Set to 60º C:

  (60º)

1 Ø 60 1 Ph


  (Cu/Al) 1 Ø 60 Cu 1 Ph

4. Enter Volts:

    VOLT 115.

5. Enter Horsepower:

   IND 10. hP


6. Display Full-Load Amps:

 FLC 100. A

7. Find Wire Size at 125% Ampacity:

  (125%)

AWG 0 Cu

WIRE SIZE 125%

8. Find Wire Ampacity:

 Ø 125.0

WIRE A125%

(cont’d)

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(cont’d)


9. Enter Conduit Type and find

Conduit Size:

  

(Cond Type) RMC 1.25 in COND SIZE

10. Find total number of Wires:

 2. TTL WIRES

11. Find Conduit Fill Percent:

 FILL 24.3 % COND

12. Find actual Fill Area:

 FILL 0.3710 TTL WIRE AREA

13. Find Remaining Area:

 REM 0.1021

WIRE AREA

Finding Conduit Size —

Multiple conductors, Different Wire

Sizes and types

Three 1/0 THWN conductors and one

#2 XHHW conductor are to connect to a panel board using a single Conduit.

What is Conduit Size needed and actual Fill Area?

KEYSTROKE

 

DISPLAY

0.

1. Enter Conduit Type:

  

(Cond Type)

FMC nonE

COND

2. Enter first Wire Size:

 


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3. Enter number of THWN Wires:

  ThhN 3. WIRES

4. Enter second Wire Size:

 


5. Enter number of XHHW Wires:

  XhhW 1. WIRE

6. Find Conduit Size:

 FMC 1.50 in COND SIZE

7. Find total number of Wires:

 4. TTL WIRES

8. Find Conduit Fill Percent:

 FILL 36.1 % COND

9. Find actual Fill Area:

 FILL 0.6711 TTL WIRE AREA

10. Find Remaining Area:

 REM 0.0717 WIRE AREA

ConVeRTInG KIloWaTT-houR anD bTu

Find the equivalent BTU rating of a

3.5 kilowatt-hour rated furnace.

KEYSTROKE

 

DISPLAY

0.

1. Enter kilowatt hours:

   3.5

2. Find equivalent BTU:

  (Kw-hr ► Btu) BTu 11,953.552

(cont’d)

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(cont’d)

What is the kilowatt-hour rating for a

4,500 BTU heater?

KEYSTROKE

 

DISPLAY

0.

1. Enter BTU rating:

    4,500.

2. Find equivalent kilowatt hours:

  (Btu ► Kw-hr) KW-h 1.3176

PaRallel ResIsTanCe

Find the equivalent Resistance for

10 Ohm, 20 Ohm, and 50 Ohm resistors placed in parallel.


0.

 

1. Enter first Resistor:

   

(Par Res)

P-RS 10.

2. Enter second Resistor:

   

(Par Res)

P-RS 6.6666667

3. Enter third Resistor:

   

(Par Res)

P-RS 5.8823529

Note: The total is recalculated with each additional Resistor value entered.

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APPENDIX A —

DeFaUlt SettiNGS

After a Clear All (

 

), your calculator will return to the following settings:

STORED VALuES DEFAuLT VALuE

Insulation Rating 60º C

Wire Material

Phase

Ambient

Temperature

Volts

Voltage Drop %

Power Factor %

Efficiency %

Motor Type

Conduit Type

Fuse/Breaker

Motor Type

Overload FLC%

Copper

3Ø

30º C (86º F)

240V

3%

100%

100%

Induction

EMT

Squirrel Cage non Design E

Free Air Mode*

115%

Off

* This setting will also return to its default upon turning the calculator off and back on.

If you replace your batteries or perform a Full Reset* (Press  , hold down  and press  ) your calculator will return to the following settings (in addition to those listed above):

(cont’d)

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(cont’d)

PREFERENCE

SETTINGS

NEC Code

DEFAuLT

VALuE

2014

Temperature Units °C

Length Units FEET

* Depressing the Reset button located above the



key will also perform a

Full Reset.

APPENDIX B — care iNStrUctioNS

Please follow the guidelines listed in this section for proper care and operation of your calculator. Not following the instructions listed below may result in damage not covered by your warranty. Refer to the

Warranty section on page 61 of the

User's Guide for more details..

Do not expose calculator to temperatures outside the operating temperature range of 32ºF

– 104ºF (0ºC – 40ºC).

Do not expose calculator to high moisture such as submersion in water, heavy rain, etc.

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APPENDIX C — accUracY/errorS, aUto

SHUt-oFF, BatterieS, reSet accuracy/errors

Accuracy/Display Capacity — Your calculator has an eight-digit display.

You may enter or calculate values up to 99,999,999. Each calculation is carried out internally to 12 digits.

Errors — When an incorrect entry is made, or the answer is beyond the range of the calculator, an error message will display. To clear an error condition, press the



button once.

At this point, you can determine what caused the error and re-key the problem.

Error Codes

DISPLAY

OFLO

ERROR TYPE

Overflow; an swer too large to display

ENT Error Invalid entry

POWR Error Power Factor

(PF) or Efficiency (EFF) calculated above 100%

(cont’d)

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(cont’d) nonE hP Error

FuLL Error

EROM Error

MATh Error

Unable to calculate or not available

Invalid Horsepower entry per

NEC table

Entered or calculated more than 15 different

Wires Sizes

Bad EPROM

Math error (i.e., divide by zero) auTo shuT-off

Your calculator is designed to shut itself off after about 8-12 minutes of non-use.

baTTeRY

The ElectriCalc Pro uses one CR2016 battery. Should your calculator display become dim or erratic, replace the battery.

Note: Please use caution when disposing of your old battery as it contains hazardous chemicals.

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Replacement batteries are available at most discount or electronics stores. You may also call Calculated

Industries at 1-775-885-4900 or go to www.calculated.com.

Battery Replacement Instructions

While the calculator is off, turn the calculator over and use a

#1 Phillips screwdriver to remove the battery holder screw located near the center at the top. With the screw removed, pull battery holder out, remove old battery, and slide new battery into holder.

The negative side of the battery should be facing you as you insert the battery holder into the calculator.

Replace screw using a

#1 Phillips screwdriver.

ReseT

If your calculator should ever “lock up,” press Reset — a small hole located below the



key — to perform a total reset.

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REPAIR AND RETuRN

ReTuRn GuIDelInes

1.

Please read the Warranty in the

User’s Guide to determine if your Calculated Industries product remains under warranty before calling or returning any device for evaluation or repairs.

2.

If your product won’t turn on, check the battery as outlined in the User’s Guide.

3.

If you need more assistance, please go to the website listed below.

4.

If you believe you need to return your product, please call a

Calculated Industries representative between the hours of 7:00am to 4:30pm

Pacific Time for additional information and a Return

Merchandise Authorization

(RMA).

Call Toll Free: 1-800-854-8075

Outside uSA: 775-885-4900 www.calculated.com/warranty

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leGal noTes

Software copyrighted and licensed by

Calculated Industries, Inc., 2014.

User’s Guide copyrighted by

Calculated Industries, Inc., 2014.

ElectriCalc® Pro is a trademark and

Calculated Industries® is a registered trademark of Calculated Industries,

Inc. © 2014.

4840 Hytech Drive

Carson City, NV 89706 U.S.A.

1-800-854-8075

Fax: 1-775-885-4949

E-mail: [email protected]

www.calculated.com

ALL RIGhTS RESERVED

Designed in the u.S.A.

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Calculated Industries 5070 ElectriCalc Pro Reference Guide 46 Pages

Calculated Industries 5070 ElectriCalc Pro Reference Guide

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