I Wired my fan to run on high all the time. What I did was use a 30 amp relay to do this. I went off an on/key wire that my electric water pump was on to get the fan to run on high whenever the key is in the on position. My electric water pump does the same.

Heres the problem. This worked fine for about a week but now the thing keeps burning fuses. Im using a 30 amp fuse. The fuse for my fan is extremely hot to the touch but the fuse for my electric water pump is not. I have no idea how many amps the fan pulls so I thought 30 amp would be enough.

Do I need to get a bigger relay and bigger fuse?

Thanks