Home / Picture / COMMBOX-600 Can I use the Commbox or Resibox with single phase electric? The BOX system can be used with single-phase electric power. You can connect up to 120 Amps on the Resibox and 230 amps on the Commbox. The relay contactors are rated 100-600V. Underfloor Heating Thermostats Heated Floors Further Questions? Miscellaneous questions - How long should I program my CommBox to melt snow? - Will any third party sensor work with the CommBox or ResiBox? - Can one AirSense be used with two CommBoxes? Wiring - How many Mats or Amps can I connect to the CommBox? - Can I use the Commbox or Resibox with single phase electric? - What are the amperage capabilities of each Box at each voltage? - Do Warmup outdoor controls have GFEP protection? - What is the largest breaker allowed by code to power a snow melting system? Preparing for your project - Do I need to provide a transformer to wire in 3-phase? - Do I need more than one waterproofing kit? - Do I need a waterproofing kit? - Do Warmup outdoor controls have GFEP protection? Programming - Where are the DIP switches located on the COMMBOX-600? - What do each of the COMMBOX DIP Switches Mean? - Programming your COMMBOX-600 Troubleshooting - What Does the HI/LO Error message mean on my COMMBOX? - What does COMMBOX error code “SensErr 2” mean? - What does COMMBOX error code “SensErr 1” mean? Installation - Does the waterproofing kit go above or below the membrane? - How is the Warmup Waterproofing Kit installed? - Do I need a waterproofing kit?