I just noticed the box where my solar cables enter the garage for my Aoi system looks like over heated. 
Opened it and couldn't find anything abnormal, the cables come from the panels and here is not any connections, it's just the cables. They are 10 AWG and the Max current is less than 8A. Measured the cables at the panels as well inside the garage and they weren't as warm as on this corner spot.




It looks like the black one is the warmest there.
I pulled a little bit the red one, and tried to move a little the cables, after some minutes the area cooled down. My system has a year old and is the first time I noticed the box on this condition, very evident.
So what could it be? A pinhole? I didn't remove the corner plastic conduit to observe more in detail if a scratch on the cable. Maybe later today.

Opened it and couldn't find anything abnormal, the cables come from the panels and here is not any connections, it's just the cables. They are 10 AWG and the Max current is less than 8A. Measured the cables at the panels as well inside the garage and they weren't as warm as on this corner spot.




It looks like the black one is the warmest there.
I pulled a little bit the red one, and tried to move a little the cables, after some minutes the area cooled down. My system has a year old and is the first time I noticed the box on this condition, very evident.
So what could it be? A pinhole? I didn't remove the corner plastic conduit to observe more in detail if a scratch on the cable. Maybe later today.