Lincoln HELIX Shoe Extension Stainless Steel 1.0 in (25.4 mm) K52149 10 HVAC It is used for a AD2652 2 It is used for a wide range of applications including pipework and plate fabrication 117 Welding process output mode Rating basis Amperes Volts Duty cycle As printed by Lincoln DC Constant Current NOT LABELLED (CC Pipe Rated Output column) 305A 29V 100% 305A 29V 100% DC Pipe Current NOT LABELLED (CC Pipe Rated Output column) 300A 29V 100% 300A 29V 100% Touch Start TIG NOT LABELLED (CC Pipe Rated Output column) 250A 30V 100% 250A 30V 100% DC Constant Voltage NOT LABELLED (CV Rated Output column) 300A 29V 100% 300A 29V 100% Output range — as printed by Lincoln Mode parameter Range DC Constant Current 20 305A DC Pipe Current 40 300A Touch Start TIG 20 250 A DC Constant Voltage 14 29 V Output Range (Product Specifications) 20 305A DC 40 300A Pipe 20 250A DC TIG 14 29V CV Open circuit voltage All Models Single Dial Continuous Control Make the most of out of your investment and maximize flexibility These stainless steel shoe extensions are compatible with most most base materials