Hi Hector! For a single-phase Model 122 duplex panel, the board will need 120V incoming power aside from those used for the pumps. For a three-phase Model 322 duplex panel, the incoming power for the board is provided by a step-down transformer built-in to the panel. If you'd like to discuss further, you can call our Tech Support team at 1-800-746-6287!
If you powered the whole box with 220 how can you power that little board where all the floats going??
Hi Hector! For a single-phase Model 122 duplex panel, the board will need 120V incoming power aside from those used for the pumps. For a three-phase Model 322 duplex panel, the incoming power for the board is provided by a step-down transformer built-in to the panel. If you'd like to discuss further, you can call our Tech Support team at 1-800-746-6287!