Does anyone know what part number or name i need to look up for a screw together 3 pin connector? I am building a power cable out of 12 awg and need the connector to go into the back of my radio. The power cable it came with is to small for the upgrades i have. Just need that ###### connector.
Connector info
Discussion in 'CB Radio Forum' started by Robfromnc78, Apr 29, 2020.
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Why would you need 12 gauge wire?
Those connectors are limited to 5 to 7 amps.
Most, if not all of these connectors are molded.
Why not replace it with an Anderson connector? -
It is to upgrade the amperage handling of the input power to avoid voltage drop. The 12 awg is better than the 22 gage that is stock. P=E×I so if i am trying to out put 100 watts then 100=14.5×6.89. So 7 amps average, this doesn't account for in rush of current for modulation. So I am doubling plus a little to be safe. Roughly 18 feet of cable needed from battery to radio for routing plus a little slack. I will be using 8 feet of 10 awg to get into or to the cab followed by 10 ish feet of 12 awg with blade fuses on both sides. This should account for current spikes up to 30amps. But to do this i need the screw together connector to build my own. Is it over kill...maybe. Ohms law is never wrong though, and current handling capabilities of wire is pretty well set too.
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Ok you totally confused me, never seen 30 amp spikes on a cb.
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Not saying there is going to be 30 amp spikes. Just giving my self some head room to play with. If the wire you have is underrated for the current draw you have it will cause a voltage drop. If the voltage drop is too much then it will affect your transmitted wave form, which will affect things like how clear you are and range. I will admit i am over building it. However it will be able to handle what i am throwing at it with a little to play with.
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Take it from the battery with 10 ga and use a terminal strip using 16 gauge wire under a foot.
The voltage drop with the 10 ga will be less than a volt at 15 amps.
I wonder if you are modulating the final stage of the radio or just have an add on amp and modulating the old final stage. -
Upgraded matched finals
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Ok, so here is the thing, unless you are modulating the finals with 50 watts, you won't see the current peaks you are talking about.
Try the 10 gauge to a terminal strip, then 16 a foot to the radio. If you have a voltage drop between the terminal strip and the radio, try 14 gauge.
I would also seriously think about using an Anderson - power pole - connector mod on the back of the radio in place of the cheap cb power connector. -
I was looking at those, didn't think about running "new" wire in the radio.
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You don't have to run a new wire in the radio, by the way what radio are you talking about?
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