rhys wrote:
On 27 May 2004 07:54:14 -0700, (Michael
Sutton) wrote:


do they use 110v 12 gauge solid core "romex" like they do
for home installations for do they acutally use stranded wire
in conduit? I just can't see all the boat manufactureres going
to this expense.


Well, perhaps my experience will be instructive.

I have a 1973 racer cruiser made by Ontario Yachts, a reputable firm
known for solid boats (Ontario 28, 32, Niagara 35, etc.)

The electric wires in the boat are original except where I've changed
them. I intend to change all of them eventually, as I intend to
relocate the batteries, charger, etc. under a settee next to the mast
for better weight distribution.

The panel is little metal toggle switch with glass fuse holders with a
common positive side. Most of the DC power lines are very narrow, 20
or 22 gauge, to a terminal block in the head and aft and forward to
running lights. I replaced all mast wires with 12 gauge to spreader
lights, steaming and deck lights and 14 gauge to trilight and anchor
light. All DC wiring is tinned and stranded.

Wow, what a difference. Wait until I upgrade the cabin wiring and
replace the panel. The only exception to this is perhaps I will leave
the cabin lights with the old wiring, which is not in bad condition,
if I switch from 12 VDC auto light bulbs to LEDs...the LEDs draw so
little it is hardly worth the effort of drawing the cables through
cabinetry, etc.

I also replaced the stern light wire with 16 gauge to the panel.
Again, a gratifying jump in brightness.

All new hard-wired devices, like gas/propane alarm and solenoid, depth
sounder, etc. get 14 or 16 gauge Ancor wire to the panel depending on
draw. As I have a stock 35 amp alternator on my Atomic 4, I try to
avoid heavy draws where possible.

On the AC side, yes, there is obviously 10 gauge exterior Romex-type
wire going from the hook-up to a small 30 amp fuse box which uses the
"shotgun cartridge" style of brass-ended fuses. They haven't blown in
the five years I've owned the boat. The two pairs of AC outlets on the
boat are properly grounded, but the Romex is beginning to get
tired-looking. When I get a new panel next year I will replace it with
10 gauge marine wire because I want proper AC circuit breakers, a
hard-wired charger, a small inverter, full isolation and two extra
paired outlets, one in the V-berth so I can run power tools in the
anchor locker, and one in the nav station for a PC as we are getting
wireless networking at the YC and I like to download weather maps
before I cruise.

My other suggestion, depending on the length of your boat, is to
install a second AC hook-up. Mine is in the cockpit and the 50 foot
cord must cross about 31 feet of deck, 5 feet of Zodiac, 6 feet of
dock finger and 4 feet of rise to get to the plug. Far better, I
think, would be to have a second plug at the bow
end...somewhere...allowing a shorter cord to be used and giving one
the opinion of docking in other slips stern in or bow in without
hauling too much or too little shore power cord. Less stuff on deck
that way as well.

Hope this helps. I am learning as well and quite enjoying myself. I
won't miss those little glass fuses, I can tell you.

R.

If you install the 'right' connectors, one at bow, one at stern, you
will energise the prongs sticking out of the unused one. If someone
removes that weather cover, full line power is available for prying
fingers. Dangerous, unless you have a switch over to select only
one input plug.

Terry K

On Wed, 02 Jun 2004 04:08:59 GMT, Terry Spragg
wrote:



If you install the 'right' connectors, one at bow, one at stern, you
will energise the prongs sticking out of the unused one. If someone
removes that weather cover, full line power is available for prying
fingers. Dangerous, unless you have a switch over to select only
one input plug.

Perhaps I was unclear on that point: I would of course install a full
break point switch between the two plugs. Either, never both.

Fact is, I would use the bow plug 95% of the time as I dock bow in.
When I travel, however, and am stern in or on a wall with a bit of a
distance to a plug, or when I am in the cradle on the hard all winter,
I would revert to the stern plug.

Thanks.

R.