Connex 4600 Turbo Question

Procrastinators Unite!

We can conquer the World!

Eventually.

 

CONNECT TO BATTERY WITH 8 ga, WIRE PERIOD... I CONNECTED MINE DIRECTLY TO THE BATTERY IN A 730 VOLVO & EXPERIENCED ZERO PROBLEMS

 

Depends on the radio amp draw, and the length of the power leads.

8-ga might not be enough. The OPs 150W May require 30A.

Voltage losses need to be low. Like 2-3%. Then have to factor inline fuses, etc.

There are online calculators available.

 

8 Gauge will work well, 150 watts at 12 volts is about 14 amps, not 30.

the losses with the inline fuses should be about 2.3% for a 15 foot run of cable.

you guys make this so more complicated than it really is.

 

150 watts at 13.8 volts is roughly 11 amps,

 

RL, don’t want to do it twice.

My understanding (K0BG) is:

1). Do the calculations based on peak current draw, not average.
2). Size the wiring per voltage drop over expected length.
3). So that total voltage drop is not above .5/volt.

Then there’s length. Mine will likely be 12’ and up to 16’ for the power leads. I haven’t pulled dash panels, so, unless something is accessible, it’s out and through the firewall. Down along frame. 6’ to dash backside would be great.

Then there is the problem of heat. Summertime truck underhood heat and extended jawbone time.

Distance & amp draw. Exacerbated by heat. Dead minimization of voltage drop.

In the above post you’ve quoted my desire was to alert others that using provided tools is the best approach. Know all the parameters.

Going straight to battery POS & NEG no longer ideal. Our company warns about other than one wire set-up. And it’s a long ways to alternator/engine ground.

Not trying to complicate it so much as NOT LEAVE ANYTHING OUT.

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I have an 8-ga harness that extends up to 22’ via POWERPOLE connected lengths. ATC 30A fuses near end. Build-A-Harness.

That’s the test item.

I figure it good for any big truck, my pickup, etc as I can be up & running fairly quickly.

Then build what it “needs”.

No, I don’t want to run 6-ga. But 8-ga is looking like it’s on the edge at guesstimate 16’. (Length & Heat).

RM ITALY rates the 7505v 30A maximum draw (30A fused) though I plan to run it on the Low side of the three-way power switch (Which was Low 40W, High 180W on the tech bench). The present radio driving those numbers with 2.25W and 15W.

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You guys make things too complicated.

Take the input voltage at 12 volts, not 13.8, you want to see max's not normal operating conditions.

Average the length out, don't need precise numbers because you are not dealing with sensitive equipment but a CB and they have sloppy power supply designs.

Powerpoles and all that crap don't matter, that's just protection and connections and the voltage drops are not important because you won't see them at operating voltages.

AND about K0's website, a lot of people have differing opinions about the content, it is good guidelines but not all 100% accurate. I personally know him and discussed some issues with him in the past so I know what he knows.

 

RL, you’re a real asset. Thx!

Trying to not miss a parameter that matters, so giving context is greatly appreciated.

I may be off a few days at New Years. That’ll give me time to figure on where to connect power thus length. THAT is when I was going to post these questions.

(And, Hey!! PowerPoles clean up a WHOLE lot of [potential] sloppiness. As does a RigRunner).

Alans site is consistent. Forward & backward. It’s real work to do that much editing.

And as I had to go past Clines Corners a little while ago, I don’t need him stepping to the front porch in Roswell and aiming a thunderbolt straight up the highway (ha!).

I started auto wiring projects 45-years ago. Learned that stupid or cheap can get expensive.

While what I’m up to here is $$$, it’s all towards a first class install on my vehicles as well. The work truck will get “simplified” as I try things just to (hell) “try them”.

And while a CB power supply may be crude, the radio to replace the Galaxy 99 may a used Icom 718 or Yaesu FT450. Thats a good ways off if it even happens. But the potential does inform my current decisions.

As The Baleful Eye has granted an audience — and in deference to experience & wisdom gracefully bestowed — I bow and change to that course, sir.

Thanks. (Sincerely)

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