Grounding portable welders, light plants

[Jose Renteria]

Is the grounding of portable equipment that is in temporary use required to be grounded with a ground rod or to building steel, per the NEC Code??
Would you ground a Sucktion truck, an Air Compressor, a portable AC unit?

 

[jwelectric]

Not real sure of your question so I will say read 250.34 and see if that answers your question.