Calculated-industries 5060 Manuale Utente

ELECTRICALC®PRONEC®COMPLIANTUPDATEABLE ELECTRICAL CODE CALCULATORModel 5060User’s Guide

8 — ElectriCalc ProNOTE: The temperature units can bedisplayed in Celsius (°C) or Fahrenheit(°F) by using the preference functionS ÷.S 4 — Copper/Alu

User’s Guide — 9S 9 — 90°C Wire Insulation Sets calculator to 90°C insulation typefor wire size calculations. Displays: 90.Electrical FunctionsK — Kil

10 — ElectriCalc ProV — Volt-AmpsEnters or calculates volt-amps (usingamps, volts and horsepower or watts).Displays: VA KVA, or mVA.W — WattsEnters or

User’s Guide — 11S = (Btu Kw-hr ) — BTU toKilowatt Hours function. CalculateKilowatt Hours based on an enteredBTU (British Thermal Unit) value.S s

12 — ElectriCalc Proh — Motor Horsepower Enters or calculates motor horsepower.Displays: SYNC HP (synchronous) orHP IND (induction - default).Ampacity

User’s Guide — 13♦ Second PressIf a wire length has been entered, thesecond press displays the smaller of the two wire sizes. If not solving for volta

14 — ElectriCalc Pro♦ Second PressDisplays the maximum adjusted am-pacity of the calculated parallel wiresize. Displays: WIRE A.NOTE: No adjustments

User’s Guide — 15Voltage Drop SolutionsThe ElectriCalc Pro will calculate maximum lengths, minimum wire sizesor actual voltage drops given the othert

16 — ElectriCalc Prol — LengthEnters or calculates the length of a runfor voltage drop computation. Displays: FEET or MET.NOTE: Units of length can b

User’s Guide — 17♦ Second PressDisplays the aluminum grounding elec-trode conductor size. Displays: GRND AL WIRE SIZE.♦ Third PressDisplays the circul

IMPORTANT NOTE ONUSER RESPONSIBILITYDue to the serious nature of electricalinstallations, the user of this calculatormust be certain that he or she is

18 — ElectriCalc ProFuse/Breaker KeysThe ElectriCalc Pro has special keysthat automatically calculate the amp ratings of the following over-current pr

User’s Guide — 19♦ First PressDisplays the current motor type. Notethere is no motor type in single-phasemode.♦ Second PressIn three-phase mode only,

20 — ElectriCalc Pro♦ Second PressDisplays the full-load current percentmultiplier value used to determine fusesize. Subsequent presses repeat thiscyc

User’s Guide — 21L — Overload Protection♦ First PressDisplays the overload amperage re-quirement based on the full-load cur-rent shown on the motor na

22 — ElectriCalc ProConduit Sizing KeysThe ElectriCalc Pro calculates conduitsize using NEC Tables 1, 3, 4, and 5 ofChapter 9 (given insulation type,

User’s Guide — 23♦ Third PressShows total cross-sectional area of allentered wires of the selected wire insu-lation. Displays: TTL WIRE AREA.C — Condu

24 — ElectriCalc Pro♦ Third PressShows fill percentage for the calculatedconduit size as determined by Table 1,Chapter 9. Displays: COND FILL %.♦ Four

User’s Guide — 25Preference SettingsYour calculator has the following Pref-erence Settings that you can accessand change at any time. Access the Prefe

26 — ElectriCalc ProTo Set Ambient Temp. to °C or °F:÷ (2nd press of ÷) AMB° 30 °C+ AMB° 86 °FTo Set Length to Feet or Meter:÷ (3rd press of ÷) FEET 1

User’s Guide — 27Basic Math OperationsThis calculator uses standard chaininglogic, which simply means that you enter your first value, the operator (+

User’s Guide — 1Introducing theElectriCalc®ProNow NEC®-Updateable!The ElectriCalc®Pro is an invaluablecalculator for today’s busy electrical professi

28 — ElectriCalc ProMemory FunctionsWhenever the s0(M+) keys arepressed, the displayed value will beadded to memory. A list of memory keystrokes/funct

User’s Guide — 29New 2005 FunctionsThe default NEC setting is now 2005.This will be displayed after performing aClear All S x.The NEC Preference Sett

30 — ElectriCalc ProFind the equivalent BTU rating of a 3.5kw-hr rated furnace.Steps Keystrokes DisplayEnter Kilowatt 3 • 5 ® ®3.5HoursFind Equivalent

User’s Guide — 31Find the equivalent resistance for 10ohm, 20 ohm, and 30 ohm resistorsplaced in parallel. Steps Keystrokes DisplayEnter 1st Resistor1

32 — ElectriCalc ProFinding AmpsWhat is the current (amps) for a loaddrawing 8,250 volt-amps on a 240 volt,three-phase circuit?Steps Keystrokes Displa

User’s Guide — 336470 =43,370.Enter as VAVVA 43,370. Enter volts240 UVOLT 240. Solve for ampsAAMPS 180.70833 Finding Amps from KilowattsWhat is the

34 — ElectriCalc ProFinding kVA RatingWhat is the kVA rating for a 120/208 volt, three-phase 65 amp transformer?Steps Keystrokes DisplayClear calculat

User’s Guide — 35Steps Keystrokes DisplayClear calculatoro o0.Set to 3-phaseS 33 PHSet power factor100SWPF%100. Enter amps90 AAMPS 90. Enter volts208

36 — ElectriCalc ProFinding Single-Phase Full LoadCurrentA 2 HP induction motor operates on 230volt, single-phase power. What is the fullload current

User’s Guide — 37Finding Synchronous MotorHorsepowerA synchronous motor is defined as having a 27 amp load on a 240 volt, 3Øcircuit. What is its horse

2 — ElectriCalc ProThe ElectriCalc Pro instantly solves forthe following:♦ Volts, Amps, Volt-Amps, Watts, kVA, kW, PF%, EFF%, and DCResistance♦ Coppe

38 — ElectriCalc ProWire Sizing Based on Insulation RatingWiring is being installed in a 240 volt,single-phase system rated at 30 kVA.What is the wire

User’s Guide — 39Re-sizing Wire Based on Different Insulation RatingsWhat wire size is required for a 75°Ccopper branch circuit carrying a load of260

40 — ElectriCalc ProWire Sizing Basedon Ambient TemperatureFind the 90°C aluminum wire size needed to connect a 47,700 volt-ampload to a 240 volt, sin

User’s Guide — 41Wire Sizing Based on Material TypeFind the wire size for a 75°C copper wire carrying a 3Ø load of 265 amps.What is the equivalent alu

42 — ElectriCalc ProSizing Parallel ConductorsWhat size 60°C insulated copper wire isrequired for a single conductor carryinga 500 amp load in a Free

User’s Guide — 43Finding Derated Wire SizeWhat is the derated wire size requiredfor nine 75°C copper wires, each carry-ing a maximum load of 65 amps?S

44 — ElectriCalc ProSizing Temperature-AdjustedDerated WiresA circuit was built with 90°C aluminumwire connecting a 47,650 volt-amp loadto a 240 volt,

User’s Guide — 45Voltage DropThe reduction in voltage between thepower source and the load can be de-termined by entering the phase, volts,amps, wire

46 — ElectriCalc ProIMPORTANT NOTE ON VOLTAGE DROP CALCULATIONSThe ElectriCalc Pro calculates voltagedrop and wire size using DC resistanceas defined

User’s Guide — 47* NOTE: See “Settings” for a list ofPermanent Values/settings. Changingthese settings may affect your calculations.Finding Three-Phas

User’s Guide — 3Table of ContentsInstalling NEC Updates . . . . . . . . . . . . . .4Key Definitions . . . . . . . . . . . . . . . . . . . .5Preferenc

48 — ElectriCalc ProFinding Voltage Drop Wire SizeA 20-amp single-phase 208-volt load willbe located 175 feet away from thesource. Assuming a 3% allow

User’s Guide — 49Finding Voltage Drop DistanceHow far from a single-phase 240-voltsource can you install a 15 amp loadusing 60°C #10 aluminum branch c

50 — ElectriCalc ProFinding Voltage DropResistanceWhat is the resistance of 85 feet of #290°C copper conductor?Steps Keystrokes DisplayClear calculato

User’s Guide — 51Ground Conductor Wire SizeYou can use single or multiple serviceentrance conductor(s) to find thegrounding electrode conductor for AC

52 — ElectriCalc ProEquip. Grounding ConductorWire SizeThe S G keystroke can be used to find the grounding conductor size forraceways and “over-curren

User’s Guide — 53Fuse and Circuit Breaker SizeWhat is the calculated dual element and single element fuse size for a 230 volt,3-phase, 50 HP induction

54 — ElectriCalc ProOverload Protection SizeWhat overload protection device size isrequired for a 460 volt, 3-phase, 15 HPinduction motor with a namep

User’s Guide — 55To select a specific conduit type, enterthe corresponding number of the con-duit and then press S C. The num-bers and types are: 1) E

56 — ElectriCalc ProFind conduit sizeCRMC 1.25 inCOND SIZEFind total # wiresC2. TTL WIRESFind conduit fill %CFILL 24.3COND %Find act. fill areaCFILL 0

User’s Guide — 57Enter wire size6 wAWG 6 CUWIRE SIZEEnter # THHN 11 tTHHN 11.WIRESFind conduit sizeCIMC 1.25 inCOND SIZEFinding Number of Wires in Ex-

4 — ElectriCalc ProInstalling NEC UpdatesYour ElectriCalc Pro is now updateablefor future National Electrical Code®editions that are updated every thr

58 — ElectriCalc ProFinding Conduit Size - MultipleConductors Different Wire Sizes& TypesThree 1/0 THWN 75°C conductors andone #2 XHHW 75°C copper

User’s Guide — 59TTL WIRESFind conduit fill %CFILL 36.1COND %Find actual fill areaCFILL 0.6711 TTL WIRE AREAFind remaining area CREM 0.0717WIRE AREA*

60 — ElectriCalc ProBattery InformationThe calculator is powered by a single 3-Volt Lithium CR-2032 battery. Thisshould last upwards of 800 hours ofac

User’s Guide — 612005 NEC ReferencesTable 250.66 Table 250.122Table 310.15(b)(2)(a)Table 310.16 Table 310.17Chapter 9, Table 1, 4, 5 and 8Section 430.

62 — ElectriCalc ProSettingsPermanent Values/SettingsValues and settings maintained in per-manent memory can only be changed(1) by pressing S x (reset

User’s Guide — 63Warranty, Repair and ReturnInformationReturn Guidelines1. Please read the Warranty in thisUser's Guide to determine if yourCalcu

64 — ElectriCalc ProWarrantyWarranty Repair Service – U.S.A.Calculated Industries (“CI”) warrants this prod-uct against defects in materials and workm

User’s Guide — 65Non-Warranty Repair Service – U.S.A.Non-warranty repair covers service beyond thewarranty period, or service requested due todamage r

66 — ElectriCalc ProFCC Class BThis equipment has been certifiedto comply with the limits for aClass B calculating device, pur-suant to Subpart J of P

User’s Guide — 67Looking For New IdeasCalculated Industries, a leading manu-facturer of special-function calculatorsand digital measuring instruments,

User’s Guide — 5Key DefinitionsStandard Calculator Functionso — On/ClearTurns on power. Pressing once clearsthe last entry and the display. Pressingtw

Printed in China5060UGL-E-C1/05

6 — ElectriCalc Pror — RecallRecalls a value stored in a register (e.g., to recall voltage drop % press r v ). Displays: RCL.S + — Pi (π)Constant =

User’s Guide — 7Sr — Clear MemoryClears the value saved in (M+) withoutchanging displayed value.Mode Set-up FunctionsS x — Clear AllClears all values,