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Class Number Description
5611-83
WELDING MACHINES - Certified to US Standards

Part A – Arc Welding Power Sources

COVERAGE:

Power Sources for arc welding, plasma cutting and allied processes for industrial and professional use. Power Sources for arc welding, plasma cutting and allied process with limited duty ratings for use by laymen. Equipment such as transformer-operated welders or electronic switching welding power sources are examples of what is covered. Equipment may be cord-connected or permanently connected. This category does not include gas or thermite welding equipment.

REQUIREMENTS:

ANSI/IEC 60974-1 Arc Welding Equipment; Part 1: Welding Power
Sources
ANSI/IEC 60974-5 Arc Welding Equipment; Part 5: Wire Feeders
ANSI/IEC 60974-6 Arc Welding Equipment; Part 6: Limited duty
Equipment
ANSI/IEC 60974-7 Arc Welding Equipment; Part 7 : Torches

MARKING:

  • Submittor's identification;
  • Model designation or equivalent;
  • Complete electrical rating;
  • date code;
  • cautions, warnings and additional markings as may be required;
  • CSA Mark with adjacent "US" indicator.

Part B – Engine-Driven Welding and Generating Machines

COVERAGE:

Engine-driven machines used to provide arc-welding power sources and low-voltage (up to 600 Volts) utility outputs.

REQUIREMENTS:

ANSI/IEC 60974-1 Arc Welding Equipment; Part 1: Welding Power
Sources
UL 558 Industrial Trucks, Internal Combustion
Engine-Powered
UL 1004-1 Rotating Electrical Machines
UL 1248 Engine Generator Assemblies for use in
Recreational Vehicles
UL 1313 Nonmetallic Safety Cans for Petroleum Products

MARKING:

Same as Part A above.

Part C – Rechargeable Battery-Powered Welding Power sources

REQUIREMENTS:

ANSI/IEC 60974-1 Arc Welding Equipment; Part 1: Welding Power
Sources
UL 2595 General Requirements for Battery-Powered
Appliances

Additional requirements to ANSI/IEC 60974-1 and UL 2595 that cover Battery Operated Welding power sources are published in Annex O of ANSI/IEC 60974-1.

MARKING:

Same as Part A above. with additional marking requirements as specified in UL 2595 and

"For use only with xxxx charger",or the equivalent, where applicable;

"For use only with xxxx battery (battery pack, etc.)" or the equivalent, where applicable.

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