Home / Wiring / COMMBOX-600 Can I use the Commbox or Resibox with single phase electric? COMMBOX-600 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? Please enable JavaScript to view the comments powered by Disqus.