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does current add?

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=2357
Printed Date: May 20, 2024 at 12:43 AM


Topic: does current add?

Posted By: ONEBALL77
Subject: does current add?
Date Posted: July 30, 2002 at 7:40 AM

When installing DEI remote starts, my manager at Circuit City states that you should run one 10ga wire with 2 fusable links in parallel.  He states that if you put a thirty amp fuse in each link,  the total current, after the links rejoin into a single 10ga wire, will be 60amps.  Is this true?  I personally do not think that current adds,  so it shoult still be 30amps after the links.

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Chris



Replies:

Posted By: Velocity Motors
Date Posted: July 30, 2002 at 9:20 AM

You are correct. Current does not add at a "Y " it stay the same throughout the power line.



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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA




Posted By: GlassWolf
Date Posted: July 30, 2002 at 11:28 AM
Jeff, I think he means putting two 30A fuses in parallel together, in-line, to equal a single 60A fuse, in which case, this will work, since the current is divided between the two fused links.
This is done in the same manner as running, say, a pair of 8AWG cables from battery to trunk, when a single 4AWG isn't available. I've seen this done a few times by folks trying to save money or who couldn't fine a place to stuff 4AWG unseen.
Things like that. They just join the smaller wires together at both ends (battery and amp)

Just be sure you don't branch to other things from just one of the fused links. re-join them to a single feed after the fuse-holders, and they are cummulative.


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-GlassWolf
Pioneer Stage-4, Orion, DynAudio, Fi





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