Longevity WeldAll 160PI/200PI/250PI - Manual (Page 15)

160/200/250PI AC/DC Series IGBT Machine
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Identifying the Ground wire
Caution: The machine may appear to operate with an incorrectly connected ground wire, but it will not operate
properly. Selecting the correct ground wire is important for proper machine operation and personnel safety.
Ground wires on Longevity™ machines are usually one of the following colors:
The ground wire is a dark green with a yellow stripe. The wire may also be just SOLID GREEN.
Clean the ends of the wires to more easily distinguish the colors. The best and safest way to determine which
wire is ground is to measure the resistance between the machine chassis and the selected wire, using an
ohmmeter. Another method is to check the continuity between the chassis and the wire, using a continuity
meter. If the selected wire is ground, the connection between the chassis and the wire will cause the meter to
illuminate. If, for any reason, you cannot visually detect the ground wire or do not feel comfortable with your
selection, ask an electrician for help.
Identifying the hot wire
For 220vac service, both the brown and blue wire are positive wires. As you may know, 220vac features
two hot wires. If you are wiring to 220vac, your blue and brown wires are both hot. The green with yellow
or SOLID GREEN is the ground. Remember, any hot wire can be attached to either hot leg on the plug.
Note: Hot Wires May also be WHITE and BLACK if a GREEN WIRE is one of the three wires. Therefore,
GREEN is ALWAYS GROUND.
Finished Plug: