What is the maximum extension cord length I can use with the Millermatic 211?
For 120V operation, the maximum recommended extension cord length is 8 meters (27 feet) using 2.5 mm² (14 AWG) conductor. For 230V operation, the maximum length is 16 meters (53 feet) using the same 2.5 mm² (14 AWG) conductor. When calculating maximum length, remember to include the length of conductor between the disconnect switch and the wall outlet. (Page 14)
From the official Miller Millermatic 211 Auto Set manual, page 14
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