Lincoln Electric SVM120-A service manual Welding Cable Connections, Machine Grounding

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A-6 A-6

INSTALLATION

WELDING CABLE CONNECTIONS

CABLE SIZE AND LENGTH

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Be sure to use welding cables that are large enough. The correct size and length becomes especially impor- tant when you are welding at a distance from the welder.

Table A.1 lists recommended cable sizes and lengths for rated current and duty cycle. Length refers to the distance from the welder to the work and back to the

welder. Cable diameters are increased for long cable lengths to reduce voltage drops.

Lincoln Electric offers a welding accessory kit with the properly specified welding cables. See the Acces- sories section of this manual for more information.

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TABLE A.1 - RECOMMENDED WELDING CABLE SIZE AND LENGTH

TOTAL COMBINED LENGTH OF ELECTRODE AND WORK CABLES

	Cable Size for 250 Amp	Cable Size for 250 Amp
Cable Length	40% Duty Cycle	100% Duty Cycle
0-50 feet (0-15 meters)	2 AWG	1 AWG
50-100 feet (15-39 meters)	2 AWG	1 AWG
100-150 feet (30-46 meters)	1 AWG	1 AWG
150-200 feet (46-61 meters)	1 AWG	1 AWG
200-250 feet (61-76 meters)	1/0 AWG	1/0 AWG

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CABLE INSTALLATION

Install the welding cables to your RANGER 10-LX as follows. See Figure A.1 for the location of parts.

1.The diesel engine must be OFF to install welding cables.

2.Remove the flanged nuts from the output termi- nals.

3.Connect the electrode holder and work cables to the weld output terminals. The terminals are iden- tified on the case front.

4.Tighten the flanged nuts securely.

5.Be certain that the metal piece you are welding (the “work”) is properly connected to the work clamp and cable.

6.Check and tighten the connections periodically.

MACHINE GROUNDING

Because the RANGER 10-LX creates its own power from its diesel-engine driven generator, you do not need to connect the machine frame to an earth ground. However, for best protection

against electrical shock, connect a heavy gauge wire (#8 AWG or larger) from the ground stud located on the bottom of the output panel (see Figure A.1) to a suitable earth ground such as a metal pipe driven into the ground.

WARNING

Do not ground the machine to a pipe that carries explosive or combustible material.

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CAUTION

•Loose connections will cause the output terminals to overheat. The terminals may eventually melt.

•Do not cross the welding cables at the output termi- nal connection. Keep the cables isolated and sepa- rate from one another.

RANGER 10-LX