Quote Originally Posted by AlexKilpatrick
As to why it blew, it is because the front radiator was clogged with dog hair. (argh) This has happened once before. Of course, the other open question is why did a 16 A fuse blow on a 15 A circuit? Alternatively, why do I need a 15 A fuse on a 15 A circuit? Finally, why is the fuse 15 A in the first place? I have measured the power consumption, and it is only about 7 A when it is running.
As to the fuse blowing first, fuses blow much faster than a Circuit Breaker tripping.
Why a 15 amp fuse, rather than a fuse a little greater than the power consumed. Start up. When a device starts up, it will pull almost twice as much current on start up surge, than is normally needed run the unit. Some manufactures use slow blow fuses for this purpose, but when something is around water, it is best to have a Fast Blow fuse.


Alex, I am not geting on you, but to anyone who reads this post, "Never" over fuse a unit, meaning replacing a blown fuse with a higher amperage fuse. Never replace a Fast Blow fuse with a Slow Blow fuse. You are asking for truoble if you do. Fuses are used to protect your equipment from further damage and yourself, should the fuse blow. If you over fuse or use a slow blow in place of a fast blow, you will cause more damage to the unit and possibly burn down your house.