Hobart Welding Products 4500 Duty Cycle, Generator Power Curve, AC Power Volts, AC Power Amperes

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4-4. Duty Cycle

Duty cycle is the percentage of 10

1minutes that unit can weld at rated load without overheating.

1 100% Duty Cycle

This unit is rated for continuous welding at 90 amperes CC/AC.

2 30% Duty Cycle

This unit is rated at 30% duty cycle

2(3 minutes welding, 7 minutes rest- ing) at 140 amperes CC/AC.

NOTICE − Exceeding duty cycle can damage unit and void warranty.

212 950

4-5. Generator Power Curve

The ac generator power curves show the generator power available in amperes at the receptacles.

AC Power Volts

300

250

200

150

100

50
0 0	10	20	30	40	50	60

AC Power Amperes

226 077

OM-4418 Page 14

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Contents OM-4418210 597K ProcessesDescription From Hobart to You Table of Contents Page Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can cause severe burnsARC Rays can burn eyes and skin Fumes and Gases can be hazardousBuildup of GAS can injure or kill Welding can cause fire or explosionEngine Hazards Compressed Air HazardsFire or Explosion hazard Welding Wire can cause injuryHOT Parts can cause burns and injury Falling Unit can cause injuryEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings Radiation can cause interferenceSignification des symboles − Consignes DE Sécurité − Lire Avant UtilisationUN Choc Électrique peut tuer LE Soudage peut provoquer un incendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peu- vent être dangereux LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peut Rendre Aveugle DES Organes Mobiles peuvent provoquer des blessuresLA Chaleur DU Moteur peut pro- voquer un incendie ’AIR Comprimé peut provoquer des blessuresRisque D’INCENDIE OU D’EXPLO- Sion ’EMPLOI Excessif peut LE Surchauffement peut endom- mager le moteur électriqueLES Fils DE Soudage peuvent provoquer des blessures UNE Remorque QUI Bascule peut entraîner des blessuresInformation EMF Proposition californienne 65 AvertissementsPrincipales normes de sécurité En ce qui concerne les implants médicauxWeld, Power, And Engine Specifications − SpecificationsSymbol Definitions − DefinitionsFuel Consumption Dimensions, Weights, And Operating AnglesAux Power Gal./Hr Weld Power In KW Weld Amps At Rated Duty CycleAC Power Amperes Generator Power CurveAC Power Volts Duty CycleVolt-Ampere Curves Volts Max Amp Min AmpAC Amps Rating Label Location − InstallationInstalling Welding Generator MovementGrounding Generator When Supplying Building Systems Grounding Generator To Truck Or Trailer FrameEngine Prestart Checks 13 mm Full Gasoline Open/On Closed/OffOil Connecting To Weld Output Terminals 150 ft 200 ft 250 ft Connecting to weldSelecting Weld Cable Sizes 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 mMaterial Thickness Reference Chart − Operating the Welding Generator Controls See SectionTo Stop turn engine switch to Off Description Of Controls See SectionAmperage Selection Table For Stick Smaw Electrodes Use GFCI-protected extension cord Generator Power Panel Receptacles− Operating Auxiliary Equipment X 15 a + 240 V x 9 a = 4 kVA/KW OM-4418− Maintenance Routine MaintenanceServicing Air Cleaner Stop engineGenerator Power − TroubleshootingTroubleshooting WeldingWith proper viscosity oil for operating temperature EngineStarting difficult − Electrical Diagrams Circuit Diagram For Welding Generator− Generator Power Guidelines Selecting EquipmentUse #10 AWG or larger insulated Grounding When Supplying Building SystemsHow Much Power Does Equipment Require? Resistive Load Volts 115 AmpsIndustrial Motors Rating Starting Watts Running Watts Approximate Power Requirements For Industrial MotorsApproximate Power Requirements For Farm/Home Equipment Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsSingle-Phase Induction Motor Starting Requirements Power Required To Start MotorHow Much Power Can Generator Supply? KVA/HP x HP x 1000 / Volts = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Stick Welding Procedure − Stick Welding Smaw GuidelinesElectrode and Amperage Selection Chart Striking an Arc − Scratch Start TechniqueStriking an Arc − Tapping Technique Positioning Electrode Holder Poor Weld Bead CharacteristicsGood Weld Bead Characteristics 10-30 9090 End View of Work AngleConditions That Affect Weld Bead Shape Electrode Movement During WeldingTee Joint Butt JointsLap Joint 16 in 30 1.6 mm Tack WeldsWeld Test Troubleshooting − PorosityTroubleshooting − Excessive Spatter Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Excessive Penetration Troubleshooting − Burn-Through Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Work like a Pro − Parts List Main AssemblySR1 Start Your Professional Welding Career Now Service SupportAssistance Contact your Distributor for Hobart Welding Products