Quick question that I haven't been able to find via search... I bought this stage 2 system from here: http://store.mp3car.com/Mp3Car_Custo..._p/ccc-122.htm
The included P4 cable to supply power to the M2-ATX power supply has 18AWG 12v positive, accessory and ground wires. However, I will be supplying the power to the M2-ATX via a 10AWG wire directly from the battery. My question is, should I get a new P4 plug that I can fit a 10 AWG wire into for the 12v positive wire? I think 18AWG is too thin given the max amp draw of around 12amps? Or have you guys just connected the thicker gauge wire from the battery to the 18AWG P4 wiring? I would rather not create a hot spot!
I know the cable you're talking about, got the same one on my Ampie and it's not P4.
The gauge of wire is directly related to the length of the wire. You could run a 20 foot 4 gauge wire and a 1 inch 18 gauge wire and they'd probably (just a guess for illustration purposes) run at the same resistance. So as long as the thinner wires aren't very long, you can likely just solder the 10 gauge right to them and be fine for that short distance.
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If you google on wire ratings you'll find the rating for 18AWG wire, and the maximum current draw for the M2 fits within the rating for this wire. I don't remember the numbers but I checked them when I first got my M2.
I ran 12 gauge wire to a terminal block, and connected the 18AWG wire to the block as well. Works fine.
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Maheriano & Zogg,
Thanks for your responses! When I was looking up the current ratings for the wire, I didn't think to take into account that the length of the 18AWG wire would be very short and hence might be OK. I saw that the "Maximum amps for power transmission" was only 2.3A on this table http://www.powerstream.com/Wire_Size.htm and I thought the M2-ATX draws up to about 15A?
Thanks for that answer as well. I had the same concern with a mo-co-so case.