I'm setting up a living quarters in my horse trailer. I've pretty much got everything figured out, but want advice on wiring size, battery charger and power inverter power levels. If you could take a look at my little diagram and let me know what you think I'd appreciate it! One not, obviously the wiring to my water pump and lighting will not be 100a rated, but will be from my battery to the power inverter. Thanks.

 

PM sent,

AJ
MA Licensed Electrician, Electrical Instructor, member International Assoc. of Electrical Inspectors .

 

Everything looks good to me. Make sure that you have a good groung source for your 120v power.
A #10 gauge wire for your 30A requirements should do the job. Use stranded THHN and make sure that you strap the wiring very good. With all of the vibration the wires and the receptacles need to be secure and tight. Wrap electrical tape around everything at the terminals. Good luck!

 

Also of note, every connection possible will be saudered and shrink-tubed.