Lincoln Electric IM615 K1614-2,-3 MAGNUM 250 NR GUN & CABLE - Manual (Page 8)

A-1 GENERAL DESCRIPTION
MAGNUM® 250 NR
A-1
GENERAL DESCRIPTION
The Magnum® 250 NR gun and cable assembly has
been designed to meet NEMA specification EW3 for
welding with the Innershield (self shielded flux cored
electrode) welding process.
The Magnum® 250 NR gun is not factory equipped
with a feeder end connector. With the K466-1
Magnum Connector Kit, they can be used with any
Lincoln LN-7 or LN-25 semiautomatic wire feeder. The
K466-1 should also be used with the LN-8 or LN-9
when feeding .052 and smaller electrodes.
The 250 amp gun can also be used with any wire feed-
er equipped with a Tweco® #1, 2, 3, 350 or 4 wire feed
adapter kit or Lincoln -10 Series Feeders by using the
K466-2 Magnum Connector Kit.
With the K466-3 or K466-4 Magnum connector kits, it
is possible to connect Magnum® 250 NR guns direct-
ly to a variety of Miller and Hobart wire feeders,
respectively.
The K466-5 connector kit allows connection of
Magnum® 250 NR guns to an L Tec feeder connector
assembly. L-Tec feeders require a feeder connector
assembly (similar to a Tweco® adapter) in order to
connect to a gun and cable. The K466-5 contains a
brass connector to permit Magnum guns to be con-
nected to this feeder connector assembly.
The K466-6 connector kit allows connection of
Magnum® 250 NR guns to a Lincoln Wirematic.
The K466-7 connector kit allows connection of
Magnum® 250 NR guns to Hobart Series 2000 Wire
Feeders.
The K466-8 connector kit allows connection of
Magnum® 250 NR guns to an LN8 or LN9 when 1/16
and larger electrode is used.
The K466-9 connector kit allows connection of
Magnum® 250 NR guns to SP100T and related wire
feeders.
For best results when welding mild and alloy steels, it
is recommended that Lincoln Innershield electrodes
be used for the self shielded welding processes.
• Do not touch electrically live parts
such as output terminals or inter-
nal wiring
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WARNING