Cor, thanks for checking into this. I contacted EMW on the subject last year, but found that the JBs from around 2015 are no longer supported and in fact there was only one person in support other than the original designer who had any history with them. I did replace the little AC/DC power supply, which they still carry in spare parts. These supplies are running very close to their design limits and get very hot, as I’m sure you have noticed. My ultimate fix, if I can’t get the GFCI problem solved, is to buy another OpenEVSE kit without cables and then transfer the 2 cables from the JB to the OpenEVSE. The kits are going for $259 with a no cost upgrade to the color display. Adding the current measurement transformer adds another $24.50, and they have a special 20% off sale running this summer. I’ve got one already and it has no issues with the PFC40. Assembly time is around 1 hour. It will take longer to get the cables out of the JB I think. I would like both of my charging stations to be able to support full 9.6kw charging. You never know when a Tesla might drop by:)
On the subject of sealed boxes, I design tablet computers for industrial applications with ratings from IP65 to IP68. As was noted, absolutely sealing a box against water ingress, or dust for that matter, is extremely difficult. You would need to seal the box in a dry nitrogen atmosphere or similar to even start to approach the problem and then as the temperature changes, the box will want to breath, which will cause lots of stresses on the seals. We approach the problem in a different way. We install a tiny Gore vent in the enclosure wall. This allows the box to breath while maintaining our IP rating. It also gives us the opportunity to test the seals with a small vacuum pump. Bottom line is that we can pass the IP68 test with even the 10” tablet which amounts to dropping the tablet into a 2 meter tall column of water for 1/2 hour with no ingress. Paul Wallace _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
