amps shut off

each amp is fused at 30 i just went out and bought an ANL 150 fuse do you think that it would fix the problem

Explain what you mean by "melted the fuse"- is the metal conductor broken or did the plastic melt?  If the plastic melted, then it's too close to a heat source- relocate it elsewhere.  If the conductor is broken, and you're unable to locate a short anywhere, I'd try the new fuse.  I've seen the glass type come unfused at the ends under normal use, but not a blade type.  Let us know how it turns out.

You need a 60 amp main fuse.  If the actual metal is melting, it means you have a short.  But, like geepherder mentioned, if the actual plastic melted, it is too close to heat.  It is possible the wire is grounding out or maybe an amplifier is fried.

Let us know how it goes.

Jacob