Miller Electric 185 DX Power Required To Start Motor, How Much Power Can Generator Supply?

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12-8. Power Required To Start Motor

Single-Phase Induction Motor Starting Requirements

Motor Start	G	H	J	K	L	M	N	P
Code

KVA/HP	6.3	7.1	8.0	9.0	10.0	11.2	12.5	14.0

4
4			AC MOTOR			2
1			AC MOTOR
		VOLTS	230	AMPS	2.5
		VOLTS	230	AMPS	2.5
3		CODE	M	Hz	60
		HP	1/4	PHASE 1

1Motor Start Code

2Running Amperage

3Motor HP

4Motor Voltage

To find starting amperage:

Step 1: Find code and use table to find kVA/HP. If code is not listed, multiply running amperage by six to find starting amperage.

Step 2: Find Motor HP and Volts.

Step 3: Determine starting amper- age (see example).

Welding generator amperage out- put must be at least twice the motor’s running amperage.

(kVA/HP x HP x 1000) / Volts =

Starting Amperage

Example: Calculate starting amper- age required for a 230 V, 1/4 HP mo- tor with a motor start code of M.

Volts = 230, HP = 1/4, kVA/HP = 11.2

(11.2 x 1/4 x 1000) / 230 = 12.2A

Starting the motor requires 12.2 amperes.

S-0624

12-9. How Much Power Can Generator Supply?

1 Limit Load To 90% Of

Generator Output

1

2

Always start non-resistive (motor) loads in order from largest to small- est, and add resistive loads last.

2 5 Second Rule

If motor does not start within 5 seconds, turn off power to prevent motor damage. Motor requires more power than generator can supply.

Ref. ST-800 396-A / S-0625

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Contents OM-4415 ProcessesDescription File Engine DriveFrom Miller to You Table of Contents Page Symbol Usage Arc Welding HazardsElectric Shock can kill HOT Parts can cause severe burnsFumes and Gases can be hazardous Buildup of GAS can injure or killARC Rays can burn eyes and skin Welding can cause fire or explosionEngine Hazards Compressed Air HazardsWelding Wire can cause injury HOT Parts can cause burns and injuryFire or Explosion hazard Falling Unit can cause injuryPrincipal Safety Standards California Proposition 65 WarningsEMF Information Radiation can cause interferenceUN Choc Électrique peut tuer Signification des symboles− Consignes DE Sécurité − Lire Avant Utilisation LE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux DES Organes Mobiles peuvent pro voquer des blessures LE Bruit peut affecter l’ouïe’EXPLOSION DE LA Batterie peu Risque D’INCENDIE OU D’EXPLO- Sion LA Chaleur DU Moteur peut pro- voquer un incendie’AIR Comprimé peut provoquer des blessures LE Surchauffement peut endom- mager le moteur électrique DES Organes Mobiles peuvent provoquer des blessuresLES Fils DE Soudage peuvent provoquer des blessures ’EMPLOI Excessif peutInformation EMF Proposition californienne 65 AvertissementsPrincipales normes de sécurité − Specifications Symbol DefinitionsWeld, Power, And Engine Specifications − DefinitionsDimensions, Weights, And Operating Angles DimensionsDuty Cycle 100% Duty Cycle at 100 Amperes CC/DCDX Model Kohler Engine Volt-Ampere CurvesStandard Model Honda Engine Fuel Consumption Curves Auxiliary Power Standard Model Honda EngineAuxiliary Power DX Model Kohler Engine Power Output DX Model Kohler Engine Generator Power CurvesPower Output Standard Model Honda Engine − Installation Installing Welding GeneratorMovement HazardsGrounding Generator When Supplying Building Systems Engine Prestart Checks − Standard Model13 mm Full Gasoline Fuel Valve Open valveEngine Prestart Checks − DX Model + −Connect negative − cable last Tools Needed 1/2Connecting To Weld Output Terminals Stop engine before connecting to weld output terminalsSelecting Weld Cable Sizes 150 ft 200 ft 250 ftOM-4415 − Operating the Welding Generator Controls Standard Models See SectionTurn Engine switch to Off Description Of Controls Standard Models See SectionTo Start To StopControls DX Models See Section Description Of Controls DX Models See Section Generator Power Panel Receptacles − Operating Auxiliary Equipment− Maintenance Routine MaintenanceServicing Air Cleaner Precleaner Paper ElementStop engine Standard Model ShownAdjusting Engine Speed Honda-Powered Units Weld/Power Speed AdjustmentIdle Speed Adjustment Stop Engine CloseTools Needed Adjusting Engine Speed Kohler−Powered UnitsStop engine. Close fuel valve − Troubleshooting TroubleshootingGenerator Power WeldingEngine Recommended Spare Parts − Parts ListRecommended Spare Parts − Electrical Diagrams Circuit Diagram For Standard ModelsCircuit Diagram for DX Models Grounding Generator To Truck Or Trailer Frame − Generator Power GuidelinesSelecting Equipment Grounding When Supplying Building Systems How Much Power Does Equipment Require?Approximate Power Requirements For Industrial Motors Approximate Power Requirements For Farm/Home EquipmentIndustrial Motors Rating Starting Watts Running Watts Farm/Home Equipment Rating Starting Watts Running WattsApproximate Power Requirements For Contractor Equipment Contractor Rating Starting Watts Running WattsPower Required To Start Motor How Much Power Can Generator Supply?Single-Phase Induction Motor Starting Requirements KVA/HP x HP x 1000 / Volts = Starting AmperageTypical Connections To Supply Standby Power Selecting Extension Cord Use Shortest Cord Possible Cord Lengths for 120 Volt LoadsCurrent Load Watts Amperes Cord Lengths for 240 Volt LoadsStick Welding Procedure − Stick Welding Smaw GuidelinesStriking an Arc − Tapping Technique Electrode and Amperage Selection ChartStriking an Arc − Scratch Start Technique Poor Weld Bead Characteristics Good Weld Bead CharacteristicsPositioning Electrode Holder 10-30 9090 End View of Work AngleConditions That Affect Weld Bead Shape Electrode Movement During WeldingButt Joints Lap JointTee Joint 16 in 30 1.6 mm Tack WeldsTroubleshooting − Porosity Troubleshooting − Excessive SpatterWeld Test Possible Causes Corrective ActionsTroubleshooting − Excessive Penetration Troubleshooting − Incomplete FusionTroubleshooting − Lack Of Penetration Troubleshooting − Distortion Troubleshooting − Burn-ThroughTroubleshooting − Waviness Of Bead Support ServiceYour distributor also gives To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s