I'd recommend a circuit breaker instead of a fuse.
When you blow a fuse, you need to replace it. When the circuit breaker pops, you reset it.
I used manual reset 25A breakers for my 100W/90W install (12 ga. used for lights & grounds to handle increased load). Like these:
http://order.waytekwire.com/IMAGES/catalog/215_56
And I also got some of the colored boots to protect the poles from accidental contact with something.
Should I have used 30A breakers? 25A will just trip quicker in the event of a problem, no?