My Mercury EFI 225 pop a fuse today while idling away from the ramp, this fuse located on the drivers side under the cowl, put in another after I got home started right up. Was this just something that happened or is there a problem developing

Thanks

there is a million things that can cause that. It can happen on random. I would carry an extra fuse with me just in case. It may happen again and have seen where the t-n-t wire to the control handle gets rubbed raw shorting out. Which in turns blows the fuse. There may be a maxium load on the dash wiring that is controlled by that fuse also. Like tach,fuel guage, tnt guage,volt guage,dash lights, depth recorders. If it starts to happen frequently, have a mechanic look to see if you're overloading the system. JMHO