Dave, I also bought one of these monitors from Fred and installed it last weekend. It was very easy to wire the fuse in the power supply lead, right behind the little panel of the monitor. Obviously it is a much lower amp fuse than the one in your main panel (I assume), so it will blow when something just goes wrong with the monitor. In Cat's Paw, the same power lead up to the head also supplies the macerator, which is fairly high current, so that main fuse will not protect the monitor. It's so easy to include the little fuse (just like the voltage regular that came with the monitor) that I see no reason not to do it.
It's hard to imagine that the solar panel will suddenly provide 30 Amps and blow the fuse. But if the output circuitry of the controller shorted out, you would have a direct connection from your battery to the controller. That would be a huge current and could cause a fire. So I would include the fuse between each controller output and its battery. Again, it is easy to put in a little fuse (maybe twice the current rating of the max charging current from your solar charger) in series with these leads. I put this fuse between each controller output and the big red battery switch (to the terminals connected directly to the battery). If you already have a fuse between the battery and the red switch, this is less important, but you could install a much smaller fuse between the controller and the battery switch so it would blow if the controller output shorted out without messing up your boat's connection to the battery. Eric, C&C 35 MkII > From: David Knecht <davidakne...@gmail.com> > To: CnC CnC discussion list <CnC-List@cnc-list.com> > Subject: Stus-List wiring projects > Message-ID: <2f69cb55-c31a-4031-901f-ae6ca4284...@gmail.com> > Content-Type: text/plain; charset="us-ascii" > > I have two wiring projects to complete this weekend and I have questions > about fuses: > 1. The holding tank monitor I bought from Fred shows a fuse being wired > between the power source and the monitor gauge. Since the power is coming > from a breaker on the main panel, is there any reason to add this fuse as > well? > > 2. I am also wiring my new solar panel to a Sunsaver Duo controller and then > to the two batteries. Their diagram shows a 30A fuse wired between the Duo > and each battery. They did not supply these fuses with the kit. Is there a > rationale for those fuses? > Thanks- Dave > _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
