i'll just add: the Pearson
schematic is just that: a schematic and should be the place you begin to layout on paper all the circuits and components you would like to have. This will give you a detailed idea of the panel you will need, the pairing of wires, etc.
In my earlier post i mentioned that the older Pearsons do not meet ABYC standards. I believe the primary reason is because of the way the electrical system
is grounded. Pearson
(or at least the ones i am familiar with) are grounded to thru-hull fittings. This is considered a no no by today's standards.
If your boat has no wiring, i would start with the 12v DC side. This is fairly simple stuff and will get you up and running relatively quickly. The AC shorepower side can always be added.
On my 76 P30, the shore-power is a completely independent system. simple and it works just fine. it consists of (a) the shorepower connection, (b) a breaker panel (c) two 120 receptacles down below (d) water
heater which i removed. The only time i seem to use the shorepower is during winter lay up, to power tools, battery charger
, and a small electrical
heater when I'm working on her.
I did buy a small inexpensive inverter
that i plug
into the 12v dc side and find this really useful for charging
things like a cordless drill, phones, etc. I would highly recommend an invertor and if i ever get around to it, I'll install a permenant one wired to one of the 120v receptacles.
the other thing i would consider doing is adding one or two 12v "cigarette lighter" receptacles. there is only one now at the companionway
. I would add one at the forward bulkhead in the main cabin
and maybe one in the v berth. everyone has phones to charge, kindle's, and i run a netbook aboard and always seem to be short of places to plug in.
Figure out what you want and get a breaker panel with spares for future flexibility.