Check out the posting by Turbone on this thread on 3/24/11. He pasted in a scan of the Subaru service manual. Subaru states that the Green link (.5 mm2) will melt at 80 amps after 15 seconds. The Red link (.85 mm2) will melt at 130 Amps after 15 seconds, and the Black link (1.25 mm2) will melt at 190 Amps after 15 seconds. Thats a far cry from the Chilton manual. Fusible links are not meant to blow quickly so their ratings can be hard to pin down.

I guess I really don't understand how you got this part:

 

10ga. - 30amps

12ga. - 20amps

14ga. - 15amps

16ga. - 7.5amps

 

I came up with different wire gauges according to the cross sectional area of the wires based on the link you gave me and the picture posed in this thread. I also don't see how you found the amperage rating for each gauge. Sorry for doing this to you, I just want to understand what I'm doing before I do it. Could you help me out?

 

This table(not the link) is not right for every situation and should be considered a "base level" to start at. The numbers given are the same as 120V residential code, but not based off them. The amperage ratings are on the small side for 12V to avoid voltage drop, but, for example you can put much bigger fuse on a gauge size, just as long as the distance your going isn't too long and the startup load isn't too much. I've re-wired a few cars and this is the size wire I use for each circuit, but in the end it depends on each application. I do tend to over-gauge circuits.

 

My advice is to look and see what each fusible link circuit does, look up the gauge size in the chart(in the link in my last post) and then make a call on the "base level" table I posted. If in doubt, go a fuse size smaller than what you think it should be, just test it out and if you burn it up, put a bigger one in. Because fusible links are not precision rated fuses, your gonna have to do a little thinking for yourself.

 

I know the black one is for the charging circuit, so whatever your alternator is putting out, stick with that. 60amps is stock. When I install my 140amp CS144, I'm going to need to upgrade the charge wire to 02ga or bigger, as well as the fuse:banana:.

Looking for a black fusable link 1.25 WTB Thnks Tim AKryde@mtaonline.net