Calculated Industries ElectriCalc Pro 5060 User Manual
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Calculated Industries ElectriCalc Pro 5060 User Manual

Electricalc pro 5060 user's guide
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E
LECTRI
3O
C
ONSTRUCTION
E
LECTRI
Cond Type
CondSz
Starter
HP
motor
Eff%
HP
th
PF%
Watts
Set
Stor
M–R/C
Rcl
x
2
%
C
M
ODEL
60
VD
Cu
M
®
ASTER
C
P
®
ALC
#THW
#XHHW
SEFuse
InsTrip
DEFuse
InvTime
milli–
EqGrnd
kilo–
Grnd
DC Res
VA
Volts
75 °
Ind/Sync
7
8
Cu/Al
FrAir
4
5
Amb °
1Ø
1
2
+
M
0
USER'S
GUIDE
AL C
®
5060
WIRE SIZE
125%
RO
Off
On/C
#THHN
M–Type
O-Load
D/R Size
ParSz
Amps
90 °
9
60 °
6
3Ø
3
P
RO
VD%
Wire Res
Length
125%
WireSz
___
√
x
Prefs
AC
π
+
–
/

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Summary of Contents for Calculated Industries ElectriCalc Pro 5060

  • Page 1 USER’S GUIDE LECTRI AL C ® 5060 ODEL WIRE SIZE 125% ® ONSTRUCTION ASTER ® LECTRI On/C Cond Type CondSz #THW #XHHW #THHN Starter SEFuse InsTrip M–Type Wire Res DEFuse InvTime O-Load Length motor Eff% milli– EqGrnd D/R Size 125% kilo–...
  • Page 3 Introducing the ® ElectriCalc Now NEC -Updateable! ® The ElectriCalc Pro is an invaluable ® calculator for today’s busy electrical professional. Unlike a regular calcula- tor, it has intuitively labeled “electrical keys” and conforms to the 2002 and future National Electrical Codes , allow- ing you to solve Code-related problems quickly and accurately.
  • Page 4 The ElectriCalc Pro instantly solves for the following: Volts, Amps, Volt-Amps, Watts, kVA, kW, PF%, EFF%, and DC Resistance Copper or Aluminum Wire Sizes Parallel & Derated Wire Sizes Voltage Drop Wire Sizes, % and Actual Voltage Drops, Voltage Drop Distances and Wire Resis- tances Grounding Conductors Sizes Motor Full-Load Amps...

  • Page 5: Table Of Contents

    Table of Contents Installing NEC Updates ....4 Key Definitions ....5 Preference Settings .

  • Page 6: Installing Nec Updates

    Installing NEC Updates Your ElectriCalc Pro is now updateable for future National Electrical Code ® editions that are updated every three (3) years (next Code update is 2005). To upgrade your unit, follow the instruc- tions below: 1) Purchase the NEC Update from CI (see pricing &...

  • Page 7: Key Definitions

    Key Definitions Standard Calculator Functions [On/C] — On/Clear Turns on power. Pressing once clears the last entry and the display. Pressing twice clears all non-permanent values. [Off] — Off Turns all power off. Clears the memory and most internal registers. [+] [–] [x] [÷] [=] Arithmetic operation keys.
  • Page 8 [Set] — Second Function Accesses the secondary functions shown above the keys when pressed prior to selection. [Stor] — Store Used to store values when pressed just before a storage register (i.e., M+, AMPS, VOLTAGE, etc.). Displays: STOR. [Rcl] — Recall Recalls a value stored in a register (e.g., to recall voltage drop % press [Rcl] [VD%]).
  • Page 9 [Stor] [0] — Cumulative Memory Adds displayed value to Memory (e.g., 10 [M+], 20 [M+], [Rcl] [M+] = 30). Clears when the calculator is shut off. [Rcl] [0] — Memory Recall Displays the value saved in (M+). [Rcl] [Rcl] — Display/Clear Memory Displays and clears the value saved in (M+).
  • Page 10 [Set] [3] — Three-Phase (3Ø) Sets calculator to three-phase mode. Displays: 3Ø. [Set] [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 ([Set] [x]). Defaults to 30°C (86°F).
  • Page 11 [Set] [5] — Free Air (FrAir) Sets calculator into Free Air mode, which refers to NEC Table 310-17 for wire size calculations. Displays: FrAir. [Set] [6] — 60°C Wire Insulation Sets calculator to 60°C wire insulation type for wire size calculations. This is the default setting.
  • Page 12 [Amps] — Amps Enters or calculates amps (using volts and VA or watts). Displays: AMPS, KAMP or mAMP. [Volts] — Volts Enters or calculates volts (using amps, HPth, and VA or watts). Default value is 240 volts. Displays: VOLT, KV, or mV. [Set] [Volts] —...
  • Page 13 [HPth] — Horsepower (Theoretical) Enters or calculates theoretical horse- power (based on Amps, VA, watts, efficiency%, PF%, and/or volts). 1.0 HPth correlates to 746 watts at 100% efficiency. Displays: HPth. [Set] [HPth] — Efficiency Enters or calculates the percent ratio between real power (watts) and theo- retical horsepower.
  • Page 14 [Set] [8] — Induction/ Synchronous Motor Toggle Toggles between induction and syn- chronous motor types. Displays: SYNC (synchronous) or IND (induction - de- fault). [HPmotor] — Motor Horsepower Enters or calculates motor horsepower. Displays: SYNC HP (synchronous) or HP IND (induction - default). Ampacity Tables The ElectriCalc Pro uses NEC Table 310-16 (310-17 for Free Air) to find wire...
  • Page 15 First Press If a wire length has been entered, the first 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.
  • Page 16 [ParSz] — Parallel Size Used to find the size of parallel conduc- tors using amperage and an entered quantity of wires. Parallel wire size computations smaller than 1/0 are dis- played as “none” (display shows “nonE”) as the NEC does not allow parallel wire runs smaller than 1/0.
  • Page 17 First Press Calculates the derated wire size, if you have entered the number of wires, for example, 4 [Set] [ParSz]). Displays: D/R WIRE SIZE. Second Press Displays the maximum adjusted am- pacity of the derated wire size. Displays: D/R WIRE A. Third Press Displays the derated adjustment factor per the NEC Table 310-15(b)(2)(a).
  • Page 18 [VD%] — Percent Voltage Drop Used to enter or calculate voltage drop. The default voltage drop is 3%. If wire size or wire length values are not avail- able, “nonE” will display since the volt- age drop cannot be found. First Press Enters a maximum allowable voltage drop percentage (Displays: V DROP...
  • Page 19 Ground Function Keys [Grnd] — Ground An output-only key used to find the grounding electrode conductor size for AC systems based on NEC Table 250-66 and an entered or calculated service-entrance conductor (largest size). Only actual wire sizes are con- sidered valid entries.
  • Page 20 [Set] [Grnd] — Equipment Ground (EqGrnd) This function uses NEC Table 250-122 to compute the minimum equipment grounding conductor size, given an entered amperage rating or setting for a over-current device up line (i.e., 300 [Set] [Grnd]). NOTE: This function deviates from the NEC Table 250-122 in that 1250 MCM AL is used instead of 1200 as specified in NEC Table 250-122.
  • Page 21 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.
  • Page 22 First Press Displays the current motor type. Note there is no motor type in single-phase mode. Second Press In three-phase mode only, subsequent presses of [O-Load] will select and display the next motor type from this list: SQ-C non-E (Squirrel Cage, non- Design E), SQ-C E (Squirrel Cage, Design E), SYNC no codE (Synchro- nous), WND no codE (Wound Rotor).
  • Page 23 Second Press Displays the full-load current percent multiplier value used to determine fuse size. Subsequent presses repeat this cycle. Displays: %FLC. [Set] [InvTime] — Instantaneous Trip Circuit Breaker First Press Displays the minimum amp rating for an Instantaneous Trip Circuit Breaker, based on the phase, motor type, and amperage.
  • Page 24 [O-Load] — Overload Protection First Press Displays the overload amperage re- quirement based on the full-load cur- rent shown on the motor nameplate. Multiplies the entered motor nameplate full-load current (stored in the [Amps] registers) by 115% or the value you enter.

  • Page 25: Conduit Sizing Keys

    Conduit Sizing Keys The ElectriCalc Pro calculates conduit size using NEC Tables 1, 3, 4, and 5 of Chapter 9 (given insulation type, wire size, and quantity of wires). It will also calculate the number of wires of a specified insulation type and wire size that will fit in a defined conduit size.
  • Page 26 Third Press Shows total cross-sectional area of all entered wires of the selected wire insu- lation. Displays: TTL WIRE AREA. [CondSz] — Conduit Size Used to find conduit sizes based on the total area of the entered wire types and sizes (up to 15 at one time).
  • Page 27 Third Press Shows fill percentage for the calculated conduit size as determined by Table 1, Chapter 9. Displays: COND FILL %. Fourth Press Shows the total wire area for all entered wires. Displays: FILL TTL WIRE AREA. Fifth Press Shows remaining fill area. This value may be negative if all wires are the same size due to Note 7 in NEC Chap- ter 9, Table 1.

  • Page 28: Preference Settings

    Preference Settings Your calculator has the following Pref- erence Settings that you can access and change at any time. Reach the Preference Function by pressing [Set] [÷]. Then, to access each category, press the [÷] key until the desired setting is reached. Within each category , press the [+] or [-] keys to toggle between individual selections (note: the [+] will advance, the [-] will...

  • Page 29: Default Settings

    Default Settings When you first receive your calculator, it is pre-set to the default settings listed below. You can always return your calculator to these default values with an All-Clear ([Set] [x]). Ambient Temperature 30°C Insulation Rating 60°C Material Copper (Cu) Phase 3Ø...

  • Page 30: Basic Math Operations

    Basic Math Operations This calculator uses standard chaining logic, which simply means that you enter your first value, the operator (+, –, x, ÷), the second value and then the equals sign (=). [–] [÷] Percent Calculations The percent key [%] can be used for finding a given percentage of a number or for working add-on, discount or divi- sion percentage calculations.

  • Page 31: Memory Functions

    Memory Functions Whenever the [Stor] [0] (M+) keys are pressed, the displayed value will be added to memory. A list of memory keystrokes/functions is provided below: Function Keystrokes Add to memory [Stor] [0] Display total in memory [Rcl] [0] Display & clear memory [Rcl] [Rcl] Clear memory, no display [Set] [Rcl]...

  • Page 32: Kerchoff's Law

    Kerchoff’s Law The ElectriCalc Pro utilizes Kerchoff’s Law in finding volts, amps, volt-amps, watts, horsepower (theoretical), effi- ciency and power factor. Finding Voltage Find the voltage supply to a single- phase load drawing 14,605 volt-amps and 115 amps. Steps Keystrokes Display Clear calculator [On/C] [On/C]...

  • Page 33: Finding Amps From Kilowatts

    Finding Current Load A building with 120/240 volt 1Ø service has the following loads: Range = 7,800 VA Heating = 15,100 VA Dryer = 5,100 VA Appliances = 8,900 VA Lighting = 6,470 VA What is the service load (amps) of the circuit supplying this building? Steps Keystrokes...

  • Page 34: Finding Kva Rating

    Finding Volt-Amps What is the VA rating for a 120 volt, 22 amp, 1Ø circuit? What is the kVA rat- ing? Steps Keystrokes Display Clear calculator [On/C] [On/C] Set to 1-phase [Set] [1] 1 PH Enter volts 120 [Volts] 120. VOLT Enter amps 22 [Amps] 22.

  • Page 35: Finding Kw Rating

    Finding Wattage A 120 volt single-phase 45 amp electri- cal motor has an 87% power factor. What is its wattage? Steps Keystrokes Display Clear calculator [On/C] [On/C] Set to 1-phase [Set] [1] 1 PH Enter volts 120 [Volts] 120. VOLT Set power fact % 87 [Set] [Watts] 87.

  • Page 36: Motor Horsepower

    Motor Horsepower The ElectriCalc Pro can calculate the full load current (amps) of a motor, based on phase, voltage and motor (synchronous or induction). It uses NEC Tables 430-148 and 430-150 to determine the motor full load current. (If you enter a value for HP or voltage that does not correspond to these tables, the unit will display Error 8).
  • Page 37 Finding Single-Phase Full Load Current A 2 HP induction motor operates on 230 volt, single-phase power. What is the full load current for this motor? Steps Keystrokes Display Reset calculator [On/C] Set to 1-phase [Set] [1] 1 PH Enter volts 230 [Volts] 230.

  • Page 38: Ampacity Wire Sizing

    Finding Synchronous Motor Horsepower A synchronous motor is defined as having a 27 amp load on a 240 volt, 3Ø circuit. What is its horsepower? Steps Keystrokes Display Reset calculator [On/C] Set to synch. [Set] [8] 0. SYNC Enter volts 240 [Volts] 240.

  • Page 39: Wire Sizing Based On Insulation Rating

    Wire Sizing Based on Insulation Rating Wiring is being installed in a 240 volt, single-phase system rated at 30 kVA. What is the wire size needed if you use 60°C copper wire? Steps Keystrokes Display Clear calculator [On/C] [On/C] Set to 1-phase [Set] [1] 1 PH Set to 60˚C...
  • Page 40 Wire Sizing Based on Ambient Temperature Find the 90°C aluminum wire size needed to connect a 47,700 volt-amp load to a 240 volt, single-phase source. What is the adjusted wire size, if the ambient temperature rating is changed from the default 30°C to 40°C? Steps Keystrokes Display...

  • Page 41: Wire Sizing Based On Material Type

    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? Steps Keystrokes Display Reset calculator [Set] [x] [On/C] Set to 75°C [Set] [7] 3Ø...

  • Page 42: Finding Derated Wire Size

    (Cont’d) Steps Keystrokes Display Reset calculator [Set] [x] [On/C] Set free air mode [Set] [5] 3Ø 60 FrAir Cu 0. Enter amps 500 [Amps] 500. AMPS Find 1 wire size [WireSz] 500 CU AWG WIRE SIZE Find 2 wire size 2 [ParSz] 000 CU PAR WIRE SIZE...
  • Page 43 Sizing Temperature-Adjusted Derated Wires A circuit was built with 90°C aluminum wire connecting a 47,650 volt-amp load to a 240 volt, single-phase source. Ambient temperature is 50°C. What is the derated wire size required if eight current-carrying THHN wires were in- stalled in the raceway? Steps Keystrokes...

  • Page 44: Voltage Drop

    Voltage Drop The reduction in voltage between the power source and the load can be de- termined by entering the phase, volts, amps, wire material, voltage drop wire size and length of run. The calculator determines resistance and then the voltage reduction.
  • Page 45 IMPORTANT NOTE ON VOLTAGE DROP CALCULATIONS The ElectriCalc Pro calculates voltage drop and wire size using DC resistance as defined by the 2002 NEC. To find the voltage drop for a specific wire size, you must first enter amps and the one- way wire length (and other required variables), entering the specific wire size last .
  • Page 46 Finding Three-Phase Voltage Drop A 20-amp three-phase load is being fed by a 230-volt source located 150 feet away. The installation specifications require 75°C #10 THW stranded copper conduc-tor. What is the voltage drop on this branch circuit? Steps Keystrokes Display Reset calculator [Set] [x] [On/C]...

  • Page 47: Finding Voltage Drop Wire Size

    Finding Voltage Drop Wire Size A 20-amp single-phase 208-volt load will be located 175 feet away from the source. Assuming a 3% allowable volt- age drop, what is the size of 75°C con- ductor re-quired for this branch circuit? Steps Keystrokes Display Reset calculator...

  • Page 48: Finding Voltage Drop Distance

    Finding Voltage Drop Distance How far from a single-phase 240-volt source can you install a 15 amp load using 60°C #10 Al branch circuit con- ductors? Assume a 3% allowable volt- age drop. Steps Keystrokes Display Reset calculator [Set] [x] [On/C] Set to 1-phase [Set] [1] 1 PH...

  • Page 49: Finding Voltage Drop Resistance

    Finding Voltage Drop Resistance What is the resistance of 85 feet of #2 90°C copper conductor? Steps Keystrokes Display Reset calculator [Set] [x] [On/C] Set to 90°C mode [Set] [9] 3Ø 90 Cu 0. Enter wire size 2 [WireSz] 2 CU AWG WIRE SIZE Find resistance [Set] [Length]...

  • Page 50: Ground Conductor Wire Size

    Ground Conductor Wire Size You can use single or multiple service entrance conductor(s) to find the grounding electrode conductor for AC systems. When using multiple conduc- tors, the ElectriCalc Pro uses the equivalent circular mils to find the grounding electrode conductor (based on NEC Table 250-66).

  • Page 51: Equip. Grounding Conductor Wire Size

    Equip. Grounding Conductor Wire Size The [Set] [Grnd] keystroke can be used to find the grounding conductor size for raceways and “over-current devices in circuit ahead” equipment. The calcula- tor uses the displayed amperage value to solve for the equipment grounding conductor based Table...

  • Page 52: Fuse And Circuit Breaker Size

    Fuse and Circuit Breaker Size What is the computed dual element and single element fuse size for a 230 volt, 3-phase, 50 HP induction motor? What are the Instantaneous Trip and Inverse Time Circuit Breaker require- ments? Steps Keystrokes Display Reset calculator [On/C] Enter volts...

  • Page 53: Starter Size

    Starter Size What NEMA size starter is required for a 575 volt, 3Ø, 20 HP induction motor? Steps Keystrokes Display Reset calculator [On/C] Enter volts 575 [Volts] 575. VOLT Enter hp 20 [HPmotor] 20. HP IND Solve for starter size [Set] [HPmotor] STAR SIZE Overload Protection Size...

  • Page 54: Conduit Size

    Conduit Size The ElectriCalc Pro can calculate the size of conduit required when running single or multiple wires using the [CondSz] key and the calculator’s inter- nal tables. The calculator uses NEC values for area of THW, THHN, and XHHW wires. When using the actual wire areas (and following the guidelines in NEC Chapter 9, Tables 1, 3, 4 and 5), the calculator can calculate a con-...
  • Page 55 Finding Motor Branch-Circuit Wire Size & Conduit Size — Same Wire Type & Size What size THHN copper wire & RMC conduit are needed to connect a 10 HP 1Ø induction motor to a 115 volt source? Steps Keystrokes Display Reset calculator [Set] [x] [On/C] Set to 1-phase...
  • Page 56 NOTE: If a wire size has been calculated or stored, and the wire type/quantity is not defined, the calculator will assume 2 THHN wires for 1Ø and 3 THHN wires for 3Ø when calculating conduit size. Finding Conduit Sizes for Multi- ple Conductors —...
  • Page 57 Finding Number of Wires in Ex- isting Conduit — Same Size, Various Types Find the maximum number of #10 THHN copper wires that can be pulled through an existing 3” EMT conduit. How many XHHW wires? How many THW wires? Steps Keystrokes Display...
  • Page 58 sectional area of wires, conduit size and actual fill area? (Use [THHN] for THWN; the cross-sectional areas are the same.) Steps Keystrokes Display Clear calculator [On/C] [On/C] Set to 75° [Set] [7] 1Ø Cu 75 0. Enter cond. type 3 [Set] [CondSz] nonE FMC COND Enter 1st wire sz...

  • Page 59: Error Codes

    Error Codes The error codes for the ElectriCalc Pro are listed below (Note: To clear an error, simply press any key): Error Description Display register overflow (Answer too large to fit display) Invalid or out-of-scale entry PF or EFF calculated above 100% Conduit Size beyond limits of table Unable to calculate VDWire Size (Amps/Length too high)

  • Page 60: 2002 Nec References

    This model is updateable for future NEC Editions. For information on 2005 and 2008 Codes, contact the dealer where this calculator was purchased or you may contact Calculated Industries, Inc. in the fall of the year prior. 58 — ElectriCalc Pro...

  • Page 61: Settings

    Settings Permanent Values/Settings Values and settings maintained in per- manent memory can only be changed (1) by pressing [Set] [x] (resets calcula- tor to default settings), or (2) by chang- ing each one or all of these settings. The following are permanent values: (1) Selectable (60°C/75°C/90°C) insula- tion ratings and CU/AL wire type rat- ings...

  • Page 62: Warranty

    Warranty Warranty Repair Service – U.S.A. Calculated Industries, Inc. (“CI”) war- rants this product against defects in materials and workmanship for a period of one (1) year from the date of original consumer purchase in the U.S. If a defect exists during the warranty pe-...
  • Page 63 Please provide an explanation of the service requirement, your name, ad- dress, day phone number and dated proof of purchase (typically a sales receipt). If the product is over 90 days old, include payment of $6.95 for return shipping and handling within the con- tiguous 48 states.
  • Page 64 Repair Service – Outside the U.S.A. Not all countries have CI Authorized Service Providers or the same warranty and service policies. To obtain warranty or non-warranty repair service for goods purchased outside the U.S., contact the dealer through which you initially pur- chased the product.
  • Page 65 INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DEFECT IN THE PRODUCT OR ITS DOCUMENTATION. The warranty, disclaimer, and remedies set forth above are exclusive and re- place all others, oral or written, ex- pressed or implied. No CI dealer, agent, or employee is authorized to make any modification, extension, or addition to this warranty.

  • Page 66: Legal Notices

    Legal Notices Software copyrighted and licensed to Calculated Industries, Inc. by Specialty Calculator Technologies, LLC, 2002. User’s Guide is copyrighted by Calcu- lated Industries, Inc., 2002. ElectriCalc and Calculated Industries are registered trademarks of Calculated Industries, Inc. ALL RIGHTS RESERVED Calculated Industries, Inc.
  • Page 68 Printed in China 5060-UG-B • 2/02...

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