[Public-List] Electrical

[tmthypk@gmail.com via Public-List]

Thank you for that

Timothy Peek

> On Mar 18, 2017, at 2:48 AM, Greg Roberts via Public-List <public-list at lists.alberg30.org> wrote:
> 
> Finally a subject that will allow me to pay a bit of my tab for all
> the great advice I've received here!
> The following is how I set up Ayla when I rewired her. There are lots
> of ways to skin the cat...
> Ground SystemAyla has a Star Ground which means there is one central
> ground point that all ground lines radiate out from.The central point
> is a large bus bar mounted next to the engine.Rather than run
> individual grounds all over the place I put a bus bar in the hanging
> closet and one in the head cabinet.I ran an 8 awg ground line to each
> of the bus bars. I use yellow for grounds per the ABYC standards . 
> The yellow for ground is to avoid someone connecting a Black DC ground
> wire to a Black AC "Hot" wire.
> BatteriesI run two AGM group 31 batteries connected to a two bank
> charger. My system is split into House and Engine Start. The switches
> are setup so I can use either or both batteries for either load. Note:
> Disconnecting from the alternator while running will almost certainly
> kill your alternator. 
> Wire Runs.I used flexible conduit: Orange for 12V circuits and Blue
> for AC. The important part is never bundle high voltage (typically AC)
> wiring with low voltage (typically DC) wiring.I also put terminal
> blocks in the hanging closet and head cabinet.
> Color CodeThe engine harness uses the factory color code so a mechanic
> working from the manual will not be mislead.The rest of my circuits
> are individually coded.The ancor wire just doesn't come in enough
> colors so I used a trick I learned when I pulled wire for a living.You
> use a sharpie to make bands around the wire. So for example: the
> circuit for my deck level nav lights uses white wire with a single
> black band. Geek Trivia: when referring to a wire with a color stripe
> or band you say the insulation color first then the stripe color.My
> nav wiring would be White/Black.You only really need to mark the last
> few feet at each end but I mark about every 18" and every 12" near the
> ends. Marking the entire length means I can identify the wire anywhere
> along the run without getting out fancy tools. 
> RadiosFuse both the 12V and the Ground lead. The primary reason you
> fuse the  ground is to protect against ground faults creating a
> situation where return currents try to get back to the star ground via
> your Antenna system. This is more of a problem with radios installed
> in cars but it's still a good idea.
> LightsThe only incandescent lights I have left are my steaming light
> and deck level nav lights. I will eventually change them because LEDs
> are more reliable. It's low priority because I only use them when
> motoring. (I do use the deck level nav lights when sailing in the
> harbor. My feeling is that they are more likely to be seen in the
> close quarters.)
> Regards,
> Greg
> 
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