Calculated Industries 5065 User Manual
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Calculated Industries 5065 User Manual

Calculated Industries 5065 User Manual

Nec compliant updateable electrical code calculator
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LECTRI
ALC
RO
NEC
COMPLIANT
®
UPDATEABLE ELECTRICAL CODE CALCULATOR
Model 5065
User's Guide

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Summary of Contents for Calculated Industries 5065

  • Page 1 ® LECTRI COMPLIANT ® UPDATEABLE ELECTRICAL CODE CALCULATOR Model 5065 User’s Guide...
  • Page 2 ElectriCalc Now NEC The ElectriCalc 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.
  • Page 3 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...

  • Page 4: Table Of Contents

    Table of Contents Key Definitions ....1 Preference Settings ....21 Default Settings .
  • Page 5 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.

  • Page 6: Key Definitions

    Key Definitions 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.
  • Page 7 Memory (e.g.,1 0 s 0, 5 S - , s 0, r 0 = 5). Clears when the calculator is shut off. r 0 — Memory Recall Displays the value saved in ( M+ ).
  • Page 8 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°...
  • Page 9 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...
  • Page 10 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 —...
  • Page 11 S U — DC Volts (Vdc) Enters or calculates DC Volts (using DC Amps and Resistance). Displays: Vdc S V — DC Resistance (R) Calculates and displays DC resistance in Ohms (using DC Volts and DC Amps). Displays: R S W — Power Factor (PF%) Enters or calculates power factor per- centage (based on Watts and VA).
  • Page 12 S = — BTU to Kilowatt–Hours (Btu Kw-hr) Calculate Kilowatt-Hours based on an entered BTU (British Thermal Unit) value. Displays: BTU S s — Parallel Resistance (Par Res) Calculate total resistance based on an entered series of resist- ance values. Displays: P-RS Motor Horsepower Functions The ElectriCalc Pro can be used to deter- mine motor full-load current (Amps)
  • Page 13 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 14 ♦ Second Press If a wire length has been entered, the sec- ond 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. Displays: CMIL ♦...
  • Page 15 (Cont’d) ♦ Second Press Displays the maximum adjusted ampacity of the calculated parallel wire size. Displays: WIRE A NOTE: No adjustments are made for deration. S P — Derated Wire Size (D/R Size) Used to calculate derated wire sizes and allowable ampacity based on the entered quantity of wires, NEC Table 310-16 and NEC Table 310-15(b)(2)(a).
  • Page 16 NEC Chapter 9, Table 8. NOTE: Voltage drop solutions may vary slightly from actual AC circuit values as the calculator does not incorporate factors such as inductive reactance, skin effect, raceway material, etc. v — Percent Voltage Drop Used to enter or calculate voltage drop.
  • Page 17 S l — Wire Resistance (Wire Res) Displays the actual resistance per 1,000 feet of the wire size in w based on NEC Chapter 9, Table 8. Displays: OHMS WIRE Ground Function Keys G — 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...
  • Page 18 ♦ Fourth Press Displays the NEC table referenced for the calculation. Displays: NEC 250.66 S G — Equipment Ground (EqGrnd) This function uses NEC Table 250-122 to calculate the minimum equipment grounding conductor size, given an entered amperage rating or setting for a over-current device up line (e.g., 300 S G).
  • Page 19 Voltage, motor HP and NEMA table specifications. If a parameter is missing or invalid, the calculator will display “nonE.” S L — Motor Type (M-Type) Based on NEC Table 430-52, this key selects the motor type used to define the percent factors for breakers/fuses.
  • Page 20 ♦ Second Press In three-phase mode only, subsequent presses of L will select and display the next motor type from this list: SQ-C non-B (Squirrel Cage, non- Design B), SQ-C B (Squirrel Cage, Design B), SYNC no codE (Synchro- nous), WND no codE (Wound Rotor). D —...
  • Page 21 S I — Instantaneous Trip Circuit Breaker (InsTrip) ♦ First Press Displays the minimum Amp rating for an Instantaneous Trip Circuit Breaker, based on the phase, motor type, and amperage. Displays: AMPS b1 ♦ Second Press Displays the full-load current percent multiplier value used to determine breaker size.
  • Page 22 Conforms to NEC Section 430-32 (a)(1) value of 115% unless you enter another value. For example, entering 125 L would calculate overload protection based on 125% of the entered amperage. Displays: AMPS ol ♦ Second Press Displays the full-load current percent multiplier value used to determine the overload current protection size.

  • Page 23: 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 24 (up to 15 at one time). If the quantity and insulation type has not been entered, the calculator will assume 2 THHN wires for single-phase or 3 THHN wires for three-phase calculations.
  • Page 25 To select a specific conduit type, enter the corresponding number of the con- duit and then press S C. If you press this keystroke without entering a number, the calculator will switch to the next conduit type on the list. 20 — ElectriCalc Pro...

  • Page 26: Preference Settings

    Preference Settings Your calculator has the following Pref- erence Settings that you can access and change at any time. Access the Preference Settings by pressing S ÷. Then, to access each category, press the the desired setting is reached. Within...

  • Page 27: Default Settings

    To Set Length to Feet or Meter: ÷ (3rd press of ÷ ) 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 by performing a Clear All (S x).

  • Page 28: 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 =. C. 3 D. 3 ÷ Percent Calculations...

  • Page 29: Memory Operations

    Recall total in Memory r 0 Display/Clear Memory r r Clear Memory Memory is semi-permanent, clearing only when you: 1) turn off the calculator; 2) press r r; 3) press S r; 4) press S x (Clear All) . When Memory is recalled (r 0),...
  • Page 30 Using Memory Storage Keys (M1 - M9) In addition to the standard cumulative Memory (as previously described), your calculator has nine independent Storage Registers – M1 through M9 – that can be used to permanently store single, noncumulative values. The following example shows the use of M1 (s 1).

  • Page 31: Kirchhoff's Law

    Finding Voltage Find the Voltage supply to a single- phase load drawing 14,605 Volt-amps and 115 Amps. Steps Clear calculator Set to 1-phase Enter VA Enter Amps Solve for Volts Finding Amps What is the current (Amps) for a load...

  • Page 32: Finding Amps From Kilowatts

    Range = 7,800 VA Dryer = 5,100 VA Lighting = 6,470 VA What is the service load (Amps) of the circuit supplying this building? Steps Clear calculator Set to 1-phase Add VA loads: Enter as VA Enter Volts Solve for Amps...

  • Page 33: Finding Kva Rating

    Finding Volt-Amps What is the VA rating for a 120 Volt, 22 Amp, 1Ø circuit? What is the kVA rating? Steps Clear calculator Set to 1-phase Enter Volts Enter Amps Solve Volt-amps V Solve for kVA Finding kVA Rating What is the kVA rating for a 120/208...

  • Page 34: Ohm's Law

    Finding kW Rating What’s the kW rating for a 90 Amp, 208 Volt, three-phase broiler with 100% power factor? Steps Clear calculator Set to 3-phase Set power factor 1 0 0 S W Enter Amps Enter Volts Solve for kW Ohm’s Law...

  • Page 35: Finding Amps

    Finding Volts The current in a circuit is 0.0125 Amps, and the total resistance is 480 Ohms. Find the Voltage. Steps Clear calculator Enter current Enter resistance Find Voltage Finding Amps An 120k electrical resistor is plugged into a 12 volt circuit. Find the current (in Amps).

  • Page 36: Motor Horsepower

    When calculating motor HP from an entered amperage, a result not directly matching a value in NEC Table 430-247, 430-248 or 430-250 will cause the calculator to choose the next higher table value for motor Horsepower. Finding Single-Phase Full Load Current A 2 HP induction motor operates on 230 Volt, single-phase power.

  • Page 37: Finding Synchronous Motor Horsepower

    Ampacity Find the wire size required to connect a continuous run, 3Ø, 3 HP induction motor into a 230V circuit. Steps Clear calculator Set to 3-phase Enter Volts Enter HP Find load current A Find 125% A size S w...

  • Page 38: Finding Direct Current Motor Horsepower

    Horsepower A direct current motor is defined as having a 10 Amp load on a 180 Volt circuit. What is its horsepower? Steps Clear calculator Set to DC motor Enter Volts Enter Amps Solve for HP Set to ind. motor...

  • Page 39: Ampacity Wire Sizing

    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 Clear calculator Set to 1-phase Enter kVA Enter Volts Find Amps Find wire size...

  • Page 40: Re-Sizing Wire Based On Different Insulation Ratings

    What wire size is required for a 3Ø, 75°C copper branch circuit carrying a load of 260 Amps? What would the wire size be if 90°C copper is used? Steps Clear calculator Set to 3-phase Set to 75°C Enter Amps Find wire size Change to 90˚...
  • Page 41 (Cont’d) Steps Enter Volts Find Amps Find wire size Change ambient temperature Find adjusted wire size Display Wire Ampacity Display CMIL Display NEC Table w Reset ambient temperature NOTE: See “Settings” for a list of Permanent Values/settings. Changing these settings may affect your calculations.

  • Page 42: 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 Clear calculator Set to 3-phase Set to 75°C Enter Amps Find wire size Change to alum. S 4...

  • Page 43: Sizing Parallel Conductors

    500 Amp load in a Free Air environment (30°C amb. temp.)? What size for 2 par- allel conductors? For 3 conductors? Steps Clear calculator Set to 60°C Set free air mode S 5 Enter Amps Find 1 wire size...

  • Page 44: Finding Derated Wire Size

    Finding Derated Wire Size What is the derated wire size required for nine 75°C copper wires, each carry- ing a maximum load of 65 Amps? Steps Clear calculator Set to 75°C Enter Amps Find normal wire size Find derated wire size...
  • Page 45 THHN wires were installed in the race- way? Steps Clear calculator Set to 60°C Enter Volt-amps 4 7 6 5 0 V Enter Volts Set to 50°C amb 5 0 S 2 AMB° 50. °C Find adj.

  • Page 46: Voltage Drop

    Phase, Volts, Amps, wire material, Voltage drop wire size and length of run. The calculator determines resistance and then the Voltage reduction. Voltage drop can be displayed as Volts dropped, or as a percent reduction of potential load.
  • Page 47 Amps and the one-way wire Length (and other required variables), entering the specific wire size last . Otherwise, for your safety the calculator will recalculate the wire sizes based on the NEC Ampacity Tables and maximum allowable Voltage drop.

  • Page 48: Finding Three-Phase Voltage Drop

    The installation specifications require 75°C #10 THW stranded copper conductor. What is the Voltage drop on this branch circuit? Steps Clear calculator Set to 75°C Set to 3-phase Enter Amps Enter Volts Enter Length(feet) 1 5 0 l FEET 150.

  • Page 49: Finding Voltage Drop Wire Size

    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? Steps Clear calculator Set to 75°C Enter Amps Enter Volts Enter distance Enter allow. VD% 3 v...

  • Page 50: Finding Voltage Drop Distance

    * Wire size can also be entered in Circular Mils (e.g., 1 0 3 8 0 w enters 10,380 CMILs and displays 10 AWG wire size). NOTE: The calculator automatically makes adjustments for resistance using NEC Chapter 9, Table 8, if the insulation type is other than 75°C.

  • Page 51: Finding Voltage Drop Resistance

    Finding Voltage Drop Resistance What is the resistance of 85 Feet of #2 90°C copper conductor? Steps Clear calculator Set to 90°C Enter wire size* Find resistance Find 85 ft resist** ÷ 1 0 0 0 x * Wire size can also be entered in Circular Mils (e.g., 6 6 3 6 0 w enters...

  • Page 52: Ground Conductor Wire Size

    2/0 is the larg- est 3-phase 75°C copper service- entrance conductor being used. What is the equivalent aluminum size? What is the equivalent Circular Mils? Steps Clear calculator Set to 3-phase Set to 75º C Enter wire size* Find ground wire G size...

  • Page 53: Equipment Grounding Conductor Wire Size

    45 Amps and 90° copper is being used in the installation. What is the equivalent aluminum size? Steps Clear calculator Set to 90˚C Enter Amp rating 4 5 A Find equipment ground wire size S G...

  • Page 54: Fuse And Circuit Breaker Size

    230 Volt, 3-phase, 50 HP induction motor? What are the Instantaneous Trip and Inverse Time Circuit Breaker requirements? Steps Clear calculator Set to 3-phase Enter Volts Enter HP Find full current Find DE fuse size D...

  • Page 55: Overload Protection Size

    19.2 Amps and a 1.0 service fac- tor? What is the required overload rating at 125% (for a 1.15 service factor)? Steps Clear calculator Set to 3-phase Enter Volts Enter Horsepower 1 5 h Enter nameplate...

  • Page 56: Conduit Size

    When using the actual wire areas (and fol- lowing the guidelines in NEC Chapter 9, Tables 1, 3, 4 and 5), the calculator can calculate a conduit size based on the con- duit type and the same or different wire types and sizes.
  • Page 57 What size THHN copper wire and RMC conduit are needed to connect a 10 HP 1Ø induction motor to a 115 Volt source? Steps Clear calculator Set to 1-phase Set to 60º C Enter Volts Enter Horsepower 1 0 h Enter cond.
  • Page 58 * 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. Display will also show wire size in upper left when displaying maximum ampacity rating.
  • Page 59 3 Inch EMT conduit. How many XHHW wires? How many THW wires? Steps Clear calculator Enter cond. type 1 S C Enter wire size* Enter conduit size 3 C Find max THHN # ∑...
  • Page 60 (Note: The cross- sectional areas are the same for both THHN and THWN; display will show as THHN.) Steps Clear calculator Set to 75° Enter cond. type 3 S C Enter 1st wire sz* 0 w Enter #, type wire 3 ∑...

  • Page 61: Converting Kw-Hr And Btu

    Permanent Values/settings. Changing these settings may affect your calculations. Converting KW-HR and BTU Find the equivalent BTU rating of a 3.5 kw-hr rated furnace. Steps Clear calculator Enter Kilowatt Hours Find Equivalent 56 — ElectriCalc Pro Keystrokes TTL WIRE AREA Keystrokes 3 •...

  • Page 62: Parallel Resistance

    What is the kw-hr rating for a 4,500 BTU heater? Steps Clear calculator Enter BTU Rating Find Equivalent Kilowatt Hours Parallel Resistance Find the equivalent resistane for 10 Ohm, 20 Ohm, and 50 Ohm resistors placed in parallel. Steps Clear calculator...

  • Page 63: Error Codes

    FULL Error EROM Error Bad EROM MATH Error Battery Information The calculator is powered by a single 3-Volt Lithium CR-2032 battery. This should last upwards of 800 hours of actual use (One year plus for most peo- ple). If the display becomes very dim or erratic, replace the battery.

  • Page 64: 2008 Nec References

    Battery Replacement Instructions: 1) Hold calculator upright with back of calculator toward you. 2) Lift battery holder out from the top of the calculator. 3) Remove the old battery. 4) Place new battery with positive side against the bottom of the holder.

  • Page 65: Updating Future Code Revisions

    This model is updateable for future NEC Editions. For information on future codes, contact the dealer where this calculator was purchased or you may contact Calculated Industries, Inc. in the fall of the year prior. Settings Permanent Values/Settings Values and settings maintained in perma-...

  • Page 66: Repair And Return

    Repair and Return Return Guidelines Please read the Warranty in this User's Guide to determine if your Calculated Industries product remains under warranty before calling or returning any device for evaluation or repairs. If your product will not turn on, check the battery as outlined in the User's Guide.

  • Page 67: Warranty

    Warranty Warranty Repair Service – U.S.A. Calculated Industries (“CI”) warrants 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 period, CI, at its...

  • Page 68: Repair Service - Outside U.s.a

    Non-warranty repair covers service beyond the warranty period, or service requested due to damage resulting from misuse or abuse. Contact Calculated Industries at the num- ber listed above to obtain current product repair information and charges. Repairs are guaranteed for 90 days.
  • Page 69 Disclaimer CI MAKES NO WARRANTY OR REPRESEN- TATION, EITHER EXPRESS OR IMPLIED, WITH RESPECT TO THE PRODUCT’S QUALITY, PERFORMANCE, MER- CHANTABILITY, OR FITNESS FOR A PAR- TICULAR PURPOSE. AS A RESULT, THIS PRODUCT, INCLUDING BUT NOT LIMITED TO, KEYSTROKE PROCEDURES, MATHE- MATICAL ACCURACY PREPRO-...

  • Page 70: Fcc Class B

    Class B cal- culating device, pursuant to Subpart J of Part 15 of FCC rules. Legal Notices Software copyrighted and licensed to Calculated Industries by Specialty Calculator Technologies, User’s Guide copyrighted by Calculated Industries, Inc., 2008. ElectriCalc® and Calculated Industries®...

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