Hobart 180 SD manual Volt-Ampere Curves, Weld Output Terminals And Selecting Cable Sizes

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2-6. Volt-Ampere Curves

Volt-ampere curves show minimum and maximum voltage and amper- age output capabilities of welding power source. Curves of other set- tings fall between curves shown.

AC MODE	DC MODE

80

70

60

50
VOLTS
40
30
20
10		Stick MIN		Stick MAX
		Stick MIN		Stick MAX
0
0	50	100	150	200	250	300	350

AMPERES

VOLTS

80

70

60

50

40

30

20			TIG–MAX	STICK–MAX
			TIG–MAX
10	TIG–MIN	STICK–MIN
	TIG–MIN	STICK–MIN
0
0	50	100	150	200	250

AMPERES

ssb1.1 10/91 – ST-188 277 / ST-188 278

2-7. Weld Output Terminals And Selecting Cable Sizes

Y ARC WELDING can cause Electromagnetic Interference.

To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed and grounded according to this manual. If interference still occurs, the user must take extra measures such as moving the welding machine, using shielded cables, using line filters, or shielding the work area.

			Total Cable (Copper) Length In Weld Circuit Not Exceeding
		100 ft (30 m) Or Less		150 ft	200 ft	250 ft	300 ft	350 ft	400 ft
		100 ft (30 m) Or Less		(45 m)	(60 m)	(70 m)	(90 m)	(105 m)	(120 m)
				(45 m)	(60 m)	(70 m)	(90 m)	(105 m)	(120 m)
Weld Output	Welding	10 – 60%	60 – 100%
Weld Output	Welding	Duty	Duty			10 – 100% Duty Cycle
Terminals	Amperes	Duty	Duty			10 – 100% Duty Cycle
Terminals	Amperes	Cycle	Cycle
		Cycle	Cycle
	100	4	4	4	3	2	1	1/0	1/0
	150	3	3	2	1	1/0	2/0	3/0	3/0
Electrode
Work	200	3	2	1	1/0	2/0	3/0	4/0	4/0
Work
	250	2	1	1/0	2/0	3/0	4/0	2-2/0	2-2/0
Ref. ST-802 238
Weld cable size (AWG) is based on either a 4 volts or less drop or a current density of at least 300 circular mils per ampere.									S-0007-D
								OM-355 Page 11

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Contents OM-355 ProcessesDescription From Hobart to You Table of Contents Page Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesPrincipal Safety Standards About Pacemakers EMF InformationLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE Securite Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Soudage peut provoquer un incendie ou une explosion DES Particules Volantes peuvent blesser les yeuxLE Bruit peut affecter l’ouïe DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Movement InstallationIncluded with Your Unit Selecting a LocationDimensions And Weights SpecificationsDuty Cycle Chart Volt-Ampere Curves Weld Output Terminals And Selecting Cable SizesARC Welding can cause Electromagnetic Interference Necting to receptacle Remote 14 ReceptacleShielding Gas Connections SocketInput Amperes at Rated Output Electrical Service GuideConnecting Input Power Input VoltageOutput Selector Switch OperationControls Select weld process Select polarity Connect remote control see Section OM-355Example of Remote Amperage Control For TIG Gtaw Welding Select weld process Select polarity Select amperage ExampleApplication Typical TIG ConnectionsTypical Stick Connections Remote Foot ControlMaintenance and Troubleshooting Routine MaintenanceProcess and Material Thickness Guide Label Justing spark gaps Adjusting Spark GapsTroubleshooting Turn Off power before adCircuit Diagram For Welding Power Source Electrical DiagramWelding Processes Using HF Sources Of HF Radiation From Incorrect InstallationHigh Frequency HF Building Metal Building Correct InstallationGround Wire NonmetalSafety Information About Tungsten Selecting and Preparing Tungsten ElectrodeSelecting Tungsten Electrode Preparing Tungsten For DC Electrode Negative Dcen Welding Mables away Guidelines for TIG Welding GtawPositioning The Torch Instead of thoriated. ThoTungsten With Filler Rod Torch Movement During WeldingTungsten Without Filler Rod Welding direction Form pool Tilt torchButt Weld And Stringer Bead Joint Lap Joint Corner Joint Positioning Torch Tungsten For Various Weld JointsOM-355 Stick Welding Procedure Weld current starts when electrode touches work- pieceStick Welding Smaw Guidelines Electrode and Amperage Selection Chart Striking an Arc Scratch Start TechniqueStriking an Arc Tapping Technique 9090 End View of Work Angle Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Positioning Electrode HolderElectrode Movement During Welding Conditions That Affect Weld Bead Shape16 in 1.6 mm Tack Welds Butt JointsLap Joint Tee JointPossible Causes Corrective Actions Troubleshooting PorosityTroubleshooting Excessive Spatter Weld TestTroubleshooting Incomplete Fusion Troubleshooting Lack Of PenetrationTroubleshooting Excessive Penetration Troubleshooting Burn-Through Troubleshooting Waviness Of BeadTroubleshooting Distortion Main Assembly Parts ListDia Part Description Quantity Mkgs 043 Panel, Front w/Components Page Page Page Support ServiceContact your Distributor for Hobart Welding ProductsCall