Rev. F, December 2020
Page 5
Pro-Wedge VM-20 Operator’s Manual
e.
The welder must be removed from the shipping/storage case and placed in an
appropriate location suitable for the welding you intend to perform.
6.2
Electrical Plug Connection
The Pro-Wedge is supplied with an appropriate U.S. plug-end according to the specified
operating voltage of the welder. The supplied plug-end can be replaced by the customer
as long as the new one is rated at a minimum of 20 amps.
This procedure should only be performed by a qualified electrician.
Electrical Extension Cords
Extension cords should be at least 12 gauge and regardless of overall length should have a
minimum of 3 plug-end connections.
Conductor Size
3-Wire
10 AWG
(5.3 mm
2
)
3-Wire
12 AWG
(3.3 mm
2
)
Length
500 Feet
(152 meters)
250 Feet
(76 meters)
Table 6.2 Maximum recommended extension cord lengths.
6.3
Generator Recommendations
When operating the Pro-Wedge using house power from a building circuit use the
appropriate plug and power cord configuration. When in-field generators are used they
must be rated for a minimum of 5,000 watts, however a rating of 6,500 watts or more is
highly recommended in order to obtain the best welder performance and temperature
control. As a rule, higher wattage generators provide better welder performance. Keep in
mind that the length and wire gauge of any extension cord being used combined with the
capacity of the generator ultimately determines the operating voltage and therefore welder
performance.
