User Manual



Grounding for
Welding Safety

       
      
      Additional
Sources for Welding Codes and Standards 
Page 6
Welding Machine Ground

      
       

     
       

      
        

      

Note: Refer to the publication NFPA 70, National
Electric Code, Article 250, Grounding, and your
local electrical codes for the correct method of
establishing this ground.
      

Figure 5
Workpiece Ground

     
      
      
       
      




       

Always ensure that the ground for the incom-
ing power circuit to the welder and the
ground for the working welding circuit are
never connected. Failure to comply with this
warning could result in death, serious per-
sonal injury, or property damage.
      


      

      

Note: The work lead from the welder is some-
times incorrectly referred to as the "ground lead."
The work lead from the welder is NOT a ground.
The work lead and the ground connection to the
workpiece are separate and must NOT be con-
nected in any way.
TIG welders use a high frequency current
that creates a high electro-magnetic field
(EMF) around the welder. EMF disrupts elec-
tronic devices. To avoid damage, keep elec-
tronic devices at least 50 feet from the
welder when it is powered on. Workers who
have pacemakers must consult with their
physician before using this equipment or
being within 50 feet of welding operations.
Figure 5.

