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Discussion Starter · #1 ·
Hello I got installed 2ga from the battery to a power distribution block in the trunk, installer use a hole in the firewall near the stearing column, over the gas pedal, hole is big enough for the 2ga but what bother me is that it seems installer dont use any plastic grommet around the wire, and honestly I dont know if a gromet can fit in there with the wire. I touch the hole outline and it doesnt feel sharp, anyway what I did was add some silicon sealant to the hole. This is a good solution? and where I can fit some kind of grommet that fit in there? do you have another idea to put a little bit of protection over there? preferably without taking the wire out?

I have that line fused with 100Amp fuse, do you think is enough protection in case the wear or an accident provoques a short with this kind of wire? I mean there or in any other part of the vehicle, if not, what is the best protection against shorts for power wires?

Thanks!!
 

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If there was no grommet, I would have also added some silicone sealant.

As far as the fuse, I wish I could provide you with an answer.
 

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Discussion Starter · #3 ·
If there was no grommet, I would have also added some silicone sealant.

As far as the fuse, I wish I could provide you with an answer.
Thanks! Eventually I would like to get a grommet or some kind of protection, but I was wondering if the sealant is a good temporary solution, it seems it might works. Lets read other opinions.
 

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Ballin' on a budget
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First off, here's some good tables: http://www.the12volt.com/info/recwirsz.asp

For a 2 gauge run, you could fuse that with 200 A no problem if you just want to protect the wire itself. As god practive though, you should set the main fuse about 25% higher then the full load of your system itself. So if you have two amplifiers, one with 40 A fuse and the other with two 30 A fuses:

40 + 30 + 30 = 100
100 * 1.25 = 125 A

So size your cable to be able to handle at least 125 A and use the next closest fust size you can find.



Your main fuse is more so to protect against major faults or wire shorts so you don't want the fuse bigger than what the cable can handle. Each piece of equipment should have it's own fuse rated for it's rated load so that it trips long before your main fuse does taking down your entire system.
 

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I used the exsiting factory gromet, i just cut a hole out for the wire. Im also using 2awg and i wrapped my cable in wire loom to protect it from geting nicked.
 

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Ballin' on a budget
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I used the exsiting factory gromet, i just cut a hole out for the wire. Im also using 2awg and i wrapped my cable in wire loom to protect it from geting nicked.
If you're using a rubber grommet with just a big flat fill, you would be better off just pushing the wire through so tha the rubber grommet is tight around the cable. That will be more than enough to keep moisture out.
 

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Discussion Starter · #7 ·
Thanks everybody, I end adding a gromet and also sealant, so I have some peace of mind now. I am also looking to replace the fuse holder with one with more quality and add a fused distribution block for the trunk. I think a few extra bucks for extra security is worth it.

THanks!!
 
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