Here are some things to consider when wireing AC in a boat.
1. Safety First
I know this is common sense but you'd be surprised.
2. Plan your system out specifically for your boat. Make wiring diagrams and when you think you've got it perfect, sit on it for about a week and then come back to it. You'll be surprised the extra stuff you will think of.
3. Shop around
You'll be shocked at the difference in prices between retailers. Some suggested places:
Wire. This is mail order from a place in Pa. The prices are good and the service
is super.Inverter Service
This place is mail order, they have decent prices and are located in KY I think. You can get panels
, switches, GFI outlets.
Also there is Defender Marine good prices on most things.
4. If a Job is Worth Doing, It's Worth Overdoing
All the wire in my boat (The main runs) is 10 AWG. It's harder to work with but I absolutely never worry about overtaxing my circuits. If I have to plug
in a 1500 watt heater I know the wire can handle it.
5. Split your circuits
For the appliances
you describe you shouldn't need more than 30 amps. Split the boat into zones. Port side is one circuit, Starboard another. This way you can have a AC unit running and still use your coffee maker. Place GFCI outlets in the beginning of each circuit, this way they will protect all of the outlets in the circuit.
6. Monitoring Your Power is Important.
I know they are expensive but it's really nice to know how many amps your pulling at any time. The meter I have on my boat monitors: Amps, Watts, Hrtz and voltage. Also make sure the panel you buy has a reverse polarity indicator.
7. Tools are Everything
Get yourself a good Rachet crimper. Don't mess with the squeeze type. If you make good crimps you won't have to worry about resistance causing a fire. Also coat the wire where it gets crimped with dielectric grease. I reworded my boat in 2008 and even the crimps in the cockpit
lockers still look like new.
Make sure the wire you use is tinned, I can't stress this enough. Also don't use solid core
or house wire it can't stand up to the vibration.
8. Neatness counts
Make sure you label everything. You just can't remember all of that stuff. Make your runs in conduit; corugated bilge
hose works great.
One last thing, and I know I'm going to get fried for this one; buy yourself a Smart Plug
outlet and shore power cord. The safety features and ease of use are worth the money
. This is a power cord you can hook up to your boat in the dark, with your eyes closed.
I probably missed a lot but those are the basics.