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post #1 of 6 Old 06-24-2014 Thread Starter
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Proposed wiring diagram for a trailer sailer

Hello all.

I am about to start to rewire our new (old) trailer sailer. I would like to have two deep cycle batteries with a small solar panel. The auxiliary is an outboard. I don't want to use shore power at any time.

I have had a look through various threads for ideas and have come up with the attached wiring diagram. I'm interested to see if I have made any fundamental errors. Please comment.

many thanks

Mark
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post #2 of 6 Old 06-25-2014
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Re: Proposed wiring diagram for a trailer sailer

Mark this may be of some help.. there actually is a color code for boat wiring LOL

Marine Wire Color Code
The ABYC (American Boat and Yacht Council) has the following suggested marine wiring color codes:

FOR General Purpose DC Wiring:
DC Positive - RED
DC Negative - BLACK or YELLOW
DC Grounding - GREEN or GREEN with YELLOW STRIPE(S)

FOR General Purpose AC Wiring:
Ungrounded Conductor (HOT) - BLACK or BLACK w BLUE, RED, ORANGE STRIPE(S)
Additional Ungrounded Conductors (HOT) - RED, ORANGE, BLUE
Grounded Neutral Conductor (NEUTRAL) - WHITE or LIGHT BLUE
Grounding Conductor (GROUND) - GREEN or GREEN w YELLOW STRIPE(S)

ENGINE and ACCESORY WIRING COLOR CODE:
Starting Circuit (starting switch to solenoind) - YELLOW with Red Stripe
Bilge Blowers (fuse or switch to blower) - BROWN with Yellow Stripe or YELLOW
Navigation Lights (fuse or switch to lights) - DARK GRAY
Tachometer (Tachometer sender to gauge) - DARK GRAY
Generator Armature (armature to regulator) - BROWN
Alternator Charge Light (generator terminal/alternator aux terminal to light to regulator) - BROWN
Pumps - (fuse or switch to pumps) BROWN
Accessory Feed (ammeter to alternator or generator output and accessory fuses or switches) - ORANGE
Ignition (ignition switch to coil and electrical instruments) - VIOLET
Instrument Feed (distribution panel to electric instruments) - VIOLET
Cabin and Instrument Lights (fuse or switch to lights) - DARK BLUE
Oil Pressure (Oil pressure sender to gauge) - LIGHT BLUE
Water Temperature (water temp sender to gauge) - TAN
Fuel Gauge (fuel gauge sender to gauge) - PINK
Tilt Down and or Trim In (tilt and/or trim circuits) - GREEN w Stripe (except yellow stripe)
Tilt Up and/or Trim Out (tit and/or trim circuits) - BLUE w Stripe

Further Explanation of the ABYC Marine Color Code:

Each electrical conductor that is part of the boat's electrical system shall have a means to identify its function in the system. EXCEPTION: Pigtails less than seven inches (175mm) in length.
Basically ABYC wants you to have a way to identify your boat's wiring system. Manufacturers should have provided a wiring diagram and means of identification with the boat.

The color code shown above from the ABYC identifies one selection of colors for use as an engine accessory wiring color code. Other means of identification may be used providing a wiring diagram
of the system indicating the method of identification is provided with each boat.
This simply states that the colors above are not the ONLY color code that can be used. Other identification can be used, the important part is that wires are clearly identified

Color-coding may be accomplished by colored sleeving or color application to wiring at termination points. If tape is used to mark a wire, the tape shall be at least 3/16 inch (5mm) in width, and shall have sufficient length to make at least two complete turns around the conductor to be marked. The tape shall be applied to be visible near each terminal.
So don't fret if you can't find a color of wire or it's not feasible to replace a certain colored wire run as you can attach tape or heat shrink which is colored to the ends of the wire near the termination point

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
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post #3 of 6 Old 06-25-2014
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Re: Proposed wiring diagram for a trailer sailer

Wire your panels from the batteries not the regulator.

Parallel the 2 batteries and both charge and draw from across the bank - in other words negative from one battery and positive from the other.

Fuse close to the batteries for panel feed and solar controller output - both in positive wires.

Brian
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post #4 of 6 Old 06-27-2014
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Re: Proposed wiring diagram for a trailer sailer

One suggestion for the assignment of breakers on your panel: one boat we chartered on had all the "at sea" loads in a row on one side of the panel, and the "anchored/docked" loads on another. Made it easy to check/set that all the appropriate things were on according to the vessel's "mode".

My current boat has them grouped more-or-less by type of service: lighting, pumps, navigation, electronics, utility. Helpful when you need to ask a guest to switch something. Yes, you'd think the labels would be sufficient, but it's surprising how long someone can stare, mystified, at 5 rows of clearly-marked switches.


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post #5 of 6 Old 06-27-2014
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Re: Proposed wiring diagram for a trailer sailer

Quote:
Originally Posted by markh3084 View Post
Hello all.

I am about to start to rewire our new (old) trailer sailer. I would like to have two deep cycle batteries with a small solar panel. The auxiliary is an outboard. I don't want to use shore power at any time.

I have had a look through various threads for ideas and have come up with the attached wiring diagram. I'm interested to see if I have made any fundamental errors. Please comment.

many thanks

Mark
Your system loads DO NOT come off the AUX port on the charge controller. That is not a port that has any real use on a boat.

Solar panel to controller > controller to battery with fuse in pos lead within 7" of + battery post.

Engine starting and DC panel loads come off the output side of a battery switch. Fused.....

Bilge pump should ideally be direct wired to battery bank and fused before the bilge pump switch at the battery. The fuse in the AUTO/OFF/MANUAL bilge switch should be sized no larger than the pump makers recommendation. The bilge pump is an always on circuit and wired this way so that when you leave the boat you can flip OFF the battery switch but not lose your bilge pump.

______
-Maine Sail / CS-36T


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Last edited by Maine Sail; 06-27-2014 at 08:07 AM.
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post #6 of 6 Old 06-30-2014
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Re: Proposed wiring diagram for a trailer sailer

Quote:
Originally Posted by markh3084 View Post
Hello all.

I am about to start to rewire our new (old) trailer sailer. I would like to have two deep cycle batteries with a small
peimar solar. The auxiliary is an outboard. I don't want to use shore power at any time.

I have had a look through various threads for ideas and have come up with the attached wiring diagram. I'm interested to see if I have made any fundamental errors. Please comment.

many thanks


Mark
Well you must have got fair amount of idea till now..If still facing trouble just PM me and I will send you complete diagram with all the minute details..

Last edited by BarneyMayas; 07-02-2014 at 01:23 AM.
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