Hello all; I'm about to purchase a few OpenEVSE's to install EVSEs at home, at work and build a mobile one like the Fivari charger to charge 3 phase, single phase in Europe. (whatever I have available) I believe I've looked at everything available online during research, however there's no one source to show how a 3 phase, Euro spec OpenEVSE could be done. Some people have done it but nothing is absolutely clear. In order to not lose any functionality I came up with this, what I believe would be the true way of wiring an open evse with a 3 phase power network. Some notes; - Using the AC Relay side to power the 4 pole European contactor with 220VAC coil. I don't think there are any contactors with this much power handling, using 12V DC coils. I hope this is the correct way to wire. (some controllers have two outputs for both A1-A2 terminals on the contactor, I assume with OpenEVSE AC Relay H is to close contactor, AC Relay N is for neutral and A2 of the contactor is to energize, hence L1, I may be terribly wrong with this but it is what I came up with after seriously spending time looking at Viridian, Mainpine, SmartEVSE and OpenEVSE wiring cases) - Using the OpenEVSE built in GFCI for GroundCheck success and also using an external RCD to protect for all three phases. Is there a way to connect the RCD to EVSE GFCI pins to get that check without the built in GFCI? - To see energy consumption in the LCD, I am putting only a single phase through the current measuring CT, this will only show amperage per phase. - AC test's both (L3-L2) goes to output of contactor so it would sense 220V AC on both test terminals (in ref. to ground of OpenEVSE board, otherwise 400VAC between both phases, I don't know how it is done) and auto sense Level 2. I hope I am correct with this logic. Besides the wiring, for this to function properly I believe I need to do firmware modification such that; - Level 2 nominal voltage for energy calculation should be 220V instead of 240. Also I need to multiply measured L3 current through CT by 3. (for 3 phases) - To plug the mobile version to single phase 220V schuko, I'll connect only L3 and leave L1-L2 empty. That won't change a thing on the functionality side as EVSE doesn't tell between a single or three phase but in terms of measuring it shouldn't be multiplied by 3. So, I am thinking because this will be Level 1 charging, Level 1 energy calc. formula shouldn't be x3 measured current. It would be great if I could change the names from Level 1, Level 2 to "Single Phase", "Three Phase" - I also would like to change the language of the LCD menu. Do these make sense? Have I done my homework correctly? Could anyone direct me towards some links to edit the firmware properly? (I don't know much programming) Thanks in advance for your help.