EVDRIVER wrote:These are rebranded Chinese units from the many makers that sell them under various names. Few make them but they all "make them".
Chris Howell has tested many Chinese EVSE's and they have all lacked the GFCI coil and test. It is hard to make a glitch free circuit since the levels are so low so they just leave it out.
As I understand it the J1772 specs are optional and leaving out the GFCI test makes a cheaper working unit. OpenEVSE initially did not have the test but for the last few years it has been present and Nick Sayer figured out how to test the circuit so you are confident it is working. The nice thing about the OpenEVSE code is that it is public domain and many have added their tweeks to it. Lincomatic wrote the body, Goldserve added the timer, Killpatrick added temperature shutdown and Nick Sayer added the GFCI test. If you have a good idea Sam (Lincomatic) will add it if there is room (the code space is very full).