I am of the opinion that any time you have a wire running from the
+side of a PowerSource it is best to FuseIt so that if that wire
should ShortToGround the Fuse will blow before any DamageIsDone ~ it
may not always be possible or convenient though.

                                                                                                        ORR ~ DeanB

On 4 Nov , 2013, at 12:27 PM, Finn Runyon wrote:

> I just finished installing a Propex heater in my Westy, added a
> second group 41 battery and will soon install a blue seas relay and
> fuse block to charge the aux battery and to isolate the remaining
> circuits off the main.  I have been reading links here and samba
> links endlessly, and one thing I don't understand is why it is
> advised to have fuses after the main and before the aux battery.
> Isn't this overkill?
> Thanks,
> Finn in Taos NM
> 87 Westy Pooh
> 89 Westy Roo