Is he the only one who has or has more in parallel ... ???
How much power is the connected load .. ???
If it has another one next to it, it is healthy, 20N50 has a fuse at the input of the positive 12v 3 fuses of 30amp. I found a capacitor of 0.22uf x 50v recently devalued. I will change it for 22uf 50v is the same I think?
Because the capacitor with the caoacimeter marks me 0.4 uf and is 5.800 as if the fuses are bad, they run in parallel
If sorry on one side has 4 20N50 and 2 MUR2060FCT. The consumer can not tell me that the client tells me that I had a TV connected to a lamp and 2 cell phone chargers but if I had more things and he doesn't tell me I would give it to him on foot if I tried it for a few days and see if it heats up as I do?
Indicate the brand and model to know the real power it could have. Although Chinese teams may be marked with a power and hopefully it can work with half of it.
It is impossible to know the amount of equipment you are connecting.
If he was already burned on one occasion with a power that should not exceed 300W, and he burned again, it is because he is perhaps connecting what equipment.
Ask him how much is the capacity of the battery or batteries and how long does it last. But if you connect it to a running vehicle, it cannot be deduced.