I live in florida, you all know the temperature here is closer to hell than any other place. So even in my garage it gets hot especially the Controller, and it is only drawing 13.4 amps per leg on 220 volts.
Is it possible to add a small fan?
and what is the best place to put it and where would it be the air intake?
The only problem it will no longer be water proof.
In my case the thing that generates the heat is the relay. If you are experiencing shutdowns due to temperature, you could relocate the relay to another place (if that is what it is). I see that it is the relay because the temperature goes up when charging and goes down when not. The only change in the system is the state of the relay. Obviously there is some heat loss through the wire but that is pretty small.
The OpenEVSE v4 controller will tolerate temperatures to about 90C before its power supplies shuts down (internal PS temperature of 142C).
Temperature monitoring and throttling will slow down charging at 65C and shutdown if temperature exceeds 72C.
On my own "Advanced Series" station (see graphs below) at 32A (7.68kw) my normal temperature rise is 16C over the starting enclosure temperature. It is very hot where I live, my enclosure temperatures during the hottest months of the summer run from 34C - 44C.
Thanks for the reply.
No, the relays are not getting hot, the Universal EVSE Controller is the one that gets very hot and the displays flickers a warning ( don't remember what exactly it displayed ) and it stops charging, I was thinking of putting a heat sink on the Universal EVSE Controller but the display won't let me, no room in it.
William, Those temperatures are not normal. Something is very wrong if temperatures are 64C. Here is my personal station during the hottest month of summer in the Mojave Desert.