Michigan Administrative Code
Department - Labor and Economic Opportunity
MIOSHA
General Industry and Construction Safety and Occupational Health Standards
Construction Safety and Health Standard
Part 7 - WELDING AND CUTTING GENERAL PROVISIONS
ARC WELDING AND CUTTING
Section R. 408.40741 - Arc welding machines

(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.