Miller packs its engine-driven welding generators with generator power to run tools and lights, start motors, power equipment and run plasma cutters and inverter-based welders. All our welding generators provide 120/240 VAC single-phase power, and some of machines offer 460VAC three-phase power.

How Much Generator Power Do You Need?
Step 1: Identify the items you wish to power at the same time.	See Wattage Reference Guide for common tools and appliances
Step 2: Determine total watts needed.	Complete Generator Power Worksheet (pdf)
Step 3: Review additional information.	FAQ (Frequently Asked Questions)

Power Requirements to Run a Miller Plasma Cutter off Generator Power
Miller Plasma Product	Generator Power Required	Max. Cutting Capability
Spectrum® Thunder	4 kW	3/16"
Spectrum® 375 CutMate™	6 kW (240 V)	1/2"
Spectrum® 625	8 kW (240 V)	5/8"
Spectrum® 2050	8 kW 10 kW 12 kW	5/8" 3/4" 7/8"
Spectrum® 3080	12 kW	7/8"

Power Requirements to Run a Miller Inverter-Based Welder off Generator Power
Miller Inverter Product	Generator Power Required	Welding Output
CST™ 250	8 kW (240 V)	5 - 250 amps, CC
XMT® 304 or ALT® 304	12 kW (240 V)	5 - 400 amps, CC/CV