|Selection Criteria||SuitCase 12RC||SuitCase X-TREME 8VS||SuitCase X-TREME 12VS||Selection Guidance|
|Feeder Type||Remote Control (constant speed)||Voltage Sensing||Voltage Sensing||Use RC feeders when welding procedures or codes specify wire feed speed and voltage parameters.|
|Power Source Compatibility||CV Power Source (must have 14-pin connection)||DC1 CC/CV||DC1 CC/CV||VS feeders offer flexibility, as they work with almost any welder.2|
|Spool Size/Capacity||8 in/14 lb or 12 in/45 lb||8 in/14 lb||8 in/14 lb or 12 in/45 lb||Use 12RC or 12VS for larger wire spools, use 8VS when weight and size are a factor.|
|Duty Cycle||500 Amps at 100%||330 Amps at 60%||425 Amps at 60%||Use 12RC or 12VS to maximize deposition rates with larger wires.|
|Recommended Distance Between Feeder and Power Source||75 ft (150 ft "round trip" cable length)||400+ ft (distance depends on the power source, weld cable size, and welding amperages)||400+ ft (distance depends on the power source, weld cable size, and welding amperages)||Use VS feeders when longer distances between the power source and feeder are required.|
|Simplicity & Control|
|Number of Feeder Connections Back to Power Source||2 (weld cable, 24 VAC power/14-pin control cable)||1 (weld cable)||1 (weld cable)||VS feeders have less cable to carry, damage, or lose.|
|Remote Control Capabilities||Voltage Set at Feeder||Voltage or Current Set at Power Source||Voltage or Current Set at Power Source||RC feeders add convenience — no need to return to the power source to adjust voltage parameters.|
|Gas Purge, Wire Jog, and Trigger Hold||
|Front Panel (all standard)||Front Panel (all standard)||VS and RC feeders have most often used controls conveniently located on front panel.|
- Not recommended for use with AC power sources.
- When paired with a CC power source, a VS feeder will vary wire feed speed (WFS) to maintain voltage. As such, accuracy of parameters and deposition rates cannot be guaranteed. For critical welds, Miller recommends using a CV power source.
Note: Use CV power source for best performance when wire welding. Also, set VS feeder to "CV mode" and welder to "CV or volt sense feeder mode" if applicable.