SailNet Community - View Single Post - Wiring & Installing A Battery Monitor
View Single Post
post #45 of Old 05-02-2012 Thread Starter
Maine Sail
Senior Member
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,887
Thanks: 20
Thanked 222 Times in 169 Posts
Rep Power: 16
       
Re: Wiring & Installing A Battery Monitor

Quote:
Originally Posted by efiste View Post
According to the wire sizing chart I referenced, #4 wire can only support up to 100 amps over a short distance and the negative should not be more than 1 size smaller than the positive.
Neg return and pos should always be the same size or no sense in having one larger than the other. DC circuits are loops so all wire should be the same size. It is the CASE GROUND of the inverter than can't be any smaller than one size below the DC wiring. This is a green wire connected between the inverter case and your ships ground/Earth, usually the engine.

The older Catalina wiring was undersized. All the newer Catalina's such as the C309, C310 & C320 uses 1/0 or larger from the factory.

4GA is marginal at best especially when folks start adding batteries and the lengths get longer....

______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
Quote Share with Facebook
 
 
For the best viewing experience please update your browser to Google Chrome