Originally Posted by yoyo
Any fuse used should NOT be greater than the individual pump rating. this could cause you big probs.
I don't think I agree with you. The fuse is really there to protect the wiring not the pump. If a pump starts drawing more current than it should it has already developed a fault. If an individual pump starts to draw more power than its rated for it will probably burn out the motor pretty quickly, and any "serious" fault (such as a short) is likely to blow a fuse even if it is double the size recommended for the pump on its own. It is not possible to run two pumps on a fuse that is the correct size for one (unless it was oversized in the first place).
In a different environment you would probably choose to put a "master" fuse at the console that could cope with both loads and thenindividual fuses on each pump. BUT putting fuses in the bilge is not really a great idea - as you will struggle to get them water tight, and IMHO fault finding is much easier if all the fuses are in the same pannel.
However, I agree that redundancy is a better idea, but more effort and cost required to install it all.