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When this welder is mounted on a truck or trailer, its frame must be electrically connected to the metal frame of the vehicle, use a #8 or larger copper wire connected between the machine grounding stud and frame of the vehicle. When this engine driven welder is connected to premises wiring such as that in a
TAbLE A-1
TOTAL COMbINED LENGTH OF ELECTRODE AND WORK CAbLES
home or shop, its frame must be connected to the system earth ground. See further connection instruc- tions in the section entitled "Standby Power Connections" as well as the article on grounding in the latest U.S. National Electrical Code and the local code.
In general, if the machine is to be grounded, it should be connected with a #8 or larger copper wire to a solid earth ground such as a metal water pipe going into the ground for at least ten feet and having no insulat- ed joints, or to the metal framework of a building
Cable Length
Cable Size for
305Amps
100% Duty Cycle
1 / 0 AWG
2 / 0 AWG
3 / 0 AWG
which has been effectively grounded.
The U.S. National Electrical Code lists a number of alternate means of grounding electrical equipment. A machine grounding stud marked with the symbol
is provided on the front of the welder.
WELDING TERMINALS
The RANGER® 305LPG is equipped with a toggle switch for selecting "hot" welding terminal when in the "WELD TERMINALS ON" position or "cold" welding terminal when in the "REMOTELY CONTROLLED" position.
WELDING OUTPUT CAbLES
With the engine off connect the electrode and work cables to the output studs. The welding process dic- tates the polarity of the electrode cable. These con- nections should be checked periodically and tightened with a 3/4" wrench.
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.
CAbLE INSTALLATION
Install the welding cables to your RANGER® 305LPG as follows:
1.The engine must be OFF to install welding cables.
2.Remove the flanged nuts from the output terminals.
3.Connect the electrode holder and work cables to the weld output terminals. The terminals are identi- fied 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.
CAUTION
•Loose connections will cause the output termi- nals to overheat. The terminals may eventually melt.
•Do not cross the welding cables at the output terminal connection. Keep the cables isolated and separate from one another.
RANGER® 305LPG