R 408.40741
R 408.40741 Arc welding machines.
Cite as Mich. Admin. Code R 408.40741
Rule 741. (1) An arc welding machine shall be capable of operating safely in
the environment in which it is located. The design and construction shall enable
the machine to carry its rated load with rated temperature rise where the temperature
of the cooling air is not more than 104 degrees Fahrenheit and where the altitude is not
more than 3300 feet (1000 meters approx.).
(2) Where unusual service conditions exist, such as corrosive fumes, steam, oil
vapor, flammable gases, vibration, shock, dust, or weather, a specially designed arc
welding machine shall be used.