To prevent dangerous electric shock, other equipment
to which this engine driven welder supplies power
must:
a) Be grounded to the frame of the welder using a
grounded type plug.
b) Be double insulated.
Do not ground the machine to a pipe that carries explo-
sive or combustible material.
When this welder is mounted on a truck or trailer, its
frame must be securely connected to the metal frame
of the vehicle. When connected to premises wiring
such as that in a home or shop, the welder frame must
be connected to the system earth ground. See further
connection instructions in the section entitled Standby
Power Connections as well as the article on ground-
ing 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 insulated
joints, or to the metal framework of a building 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 ground symbol is provided
on the front of the welder.
WELDING OUTPUT CABLES
With the engine off, connect the electrode and work
cables to the output terminals. The welding process
dictates the polarity of the electrode cable. These con-
nections should be checked periodically and tightened
with a 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. Avoid coiling long
cables on the machine when welding.
INSTALLATION
A-6 A-6
RANGER 250
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FIGURE A.1 – RANGER 250 OUTPUT CONNECTIONS
