[GreenKeys] Re: Stranded vs Solid Wire...

[Don Robert House]

Hi Eugene,

Let me see if I can answer your question properly.
Hmmm...

First as you mention the stranded wire is more flexible.  This is most  
valuable if you need to flex the harness when you open and close the  
chassis.
The 18 AWG will carry more current that 22 AWG, regardless of being  
stranded or solid.

However, stranded wire of the same gauge as solid carries more current  
due to the increased surface area.

You know me.  I like to keep things as original as possible, but in  
many cases the wire size will not make much of a difference.

I have been told that the important circuit to be sure to have enough  
current carrying capacity is the circuit that operates the motor  
driven inductors.

If you have extra conductors in the cable you can double them to  
increase the current carrying capacity known as amperage.

We used this trick with long telegraph loops in the phone company.   
However the extra capacitance often required a wave-shaper at the  
Teletype location.
The wave-shaper was a multi-tap transformer.

I hope I have not confused you.

Don
K9TTY



On 20 Nov 2008, at 8:27 PM, <eugene at hertzmail.com>  
<eugene at hertzmail.com> wrote:

Hey Don! I am in the middle of doing the EXACT same thing! I am wiring
up some cables for my URT-23. Worse part is? I picked up an automatic
antenna tuner that was used with this radio... But -a later version! So
now I have to do some wiring inside the radio interconnecting about 8
pins of two mammoth military circular connectors (to make it
compatible)! I have to reach about 1 foot inside the case of the amp
(RF-110A) and wire these things up! Ouch!

But I concur with everything that Jeff has noted.

Question (so basic I'm embarrassed to ask). The specs call for me to use
AWG 22 stranded wire. I have some AWG 18 solid lying around. There isn't
much current running on these wires as they are mostly 28V control lines
and the like.

I'd like to not do this wiring job twice...Should I hold out and get
some 22 stranded? Or should the 18 solid be ok?

I guess the real question is, other than the flexibility of stranded,
are there any other electrical properties that might make someone choose
stranded over solid (assuming the same gauge).

Thanks!
And good luck Don!

Eugene

-----Original Message-----
From: greenkeys-bounces at mailman.qth.net
[mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Jeffrey D Angus
Sent: Thursday, November 20, 2008 1:10 AM
To: Don Robert House
Cc: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] Re: Miracles by RF CONNECTIONS...

Don Robert House wrote:
> HOW SOME EVER>>>>>   Does Joel have equipment that would be able to
put my
> connectors on my wire inside of my rubber tubing?
>
> I sit here imagining myself with 22 conductors somehow coded, my
> connectors, the
> rubber tubing and my Chinese (not so good) soldering station, trying
> to terminate and
> make 40 plus good connections with my shaking hands and bad eyes.