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Author: Subject: Thinning cable???
DarrenW

posted on 1/9/05 at 02:29 PM Reply With Quote
Thinning cable???

If i buy some thick black earth cable but find it wont fit into a crimp connector - by how much am i reducing the current carrying capacity by if i remove 15mm insulation from the end and snip off 25% of the strands to squeeze it in??






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Avoneer

posted on 1/9/05 at 03:32 PM Reply With Quote
Can you peel back 40mm of sleeving, separate into two halves and use 2 crimps instead?????

Pat...





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Danozeman

posted on 1/9/05 at 09:23 PM Reply With Quote
As above. Split it and use 2.





Dan

Built the purple peril!! Let the modifications begin!!

http://www.eastangliankitcars.co.uk

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ReMan

posted on 1/9/05 at 09:27 PM Reply With Quote
Could you buy thinner cable or bigger crimps.
Or solder it into solder terminals?

How big are we talking here?





www.plusnine.co.uk
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MikeRJ

posted on 1/9/05 at 11:21 PM Reply With Quote
Chopping out some of the strands is really not good practice at all. Besides any impact on current handling (which won't be a lot), the main problem is that you create a stress point right behind the crimp which is where the wire will bend from. This will cause more strands to break until the crimp and wire part company.

Get the right sized crimps!

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darrens

posted on 2/9/05 at 08:18 AM Reply With Quote
all depends on what fault current is likely to be on the earth in the event of a fault.

Darren

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JoelP

posted on 2/9/05 at 05:44 PM Reply With Quote
in cars it wouldnt be a fault current, cos the earth is the perminant return to the battery! Know what you mean from houses though

Id size the earth to be the same size as the main starter feed. If its bigger you could trim it, but its a bit of a crap approach to car wiring Much better to get the right wire or right connectors






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johnjulie

posted on 2/9/05 at 07:02 PM Reply With Quote
The simple answer is, get the correct sized crimp for the correct sized cable.
Cheers J&J





JFDI
"Just F*****G Do It"

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Peteff

posted on 2/9/05 at 07:48 PM Reply With Quote
I got some solder cup fittings for a friend who had the same problem. Tin them well inside with flux and do the end of the cable as well, then blowlamp them and fill them with solder. Just shove the cable in while it's still molten and hold it till it sets.





yours, Pete

I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.

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NS Dev

posted on 4/9/05 at 10:09 AM Reply With Quote
get bigger crimps! Vehicle Wiring Products do them up to huge sizes.
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DarrenW

posted on 5/9/05 at 08:26 AM Reply With Quote
I must say that i havent actually done this. I always get correct rated cables and correct terminations. Reason for posting is that i have seen it done so many times before - knew it wasnt strictly correct but didnt have a good enough knowledge to back my argument up. Im sure there is a few builders out there who have done it, not said anything and will benefit from knowing if they can get away with it or not.

Last time i bought cables they were off a fork lift truck and i got the fitter to put the special ends on. Youd be surprised by how much better the engine turned over due to less losses in the earth strap.






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