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Author Topic: standard color coded wiring scheme?  (Read 4416 times)
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N3DRB The Derb
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« on: July 10, 2009, 08:05:29 AM »

I'm going to use cloth covered wire with string lacing in my new projects, stuff like in the pic.

What I am curious about is: has there ever been a  published standard in wire color coding? we know the obvious, red is B+ of some kind, Black is gnd, green is fil of some kind. I've seen blue used for B- a lot.

but has there ever been published standards, or is it all just from custom over the years?

for example: red with white trace for HV center taps....black with white trace for ac neutral? Just use what makes the most sense to you?



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Ed/KB1HYS
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« Reply #1 on: July 10, 2009, 09:04:38 AM »

from the ARRL Handbook, (1975 Pg 555)

Color Code for Hookup Wire:

Wire Color:                     Type of circuit
Black                             Grounds, grounded elements, and returns
brown                            heates or filaments, off ground
red                                power supply B+
Orange                           Screen Grids and Base 2 of transistors
yellow                            Cathodes, emmitters
green                             Control Grids, diode plates, and base1 of transistors
blue                               plates and transistor collectors
violet                             power supply negative leads
gray                              AC Power line leads
white                             Bias supply, B or C minus, or AGC

Wires with tracers are coded in the same manner as solid-color wires, allowing additional circuit identification over solid-color wiring.   When more than one color band is used, the widest represents the first color.

Funny but I was just looking this up last night for my HB efforts here...
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73 de Ed/KB1HYS
Happiness is Hot Tubes, Cold 807's, and warm room filling AM Sound.
 "I've spent three quarters of my life trying to figure out how to do a $50 job for $.50, the rest I spent trying to come up with the $0.50" - D. Gingery
WA1GFZ
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« Reply #2 on: July 10, 2009, 12:27:40 PM »

but do you know the mil spec lacing knot?
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flintstone mop
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« Reply #3 on: July 10, 2009, 01:02:24 PM »

Thanks ED
 That's gud info

Fred
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Fred KC4MOP
N3DRB The Derb
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« Reply #4 on: July 10, 2009, 02:34:36 PM »

tnx ed, my handbook had nothing on the subject. I'll print it out and use it.

Phrank,

I got teh trained in that stuff for the tempest boxes we was making when the soviet union was still around. All those feed thru caps....lawd hep me.  Tongue
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W1AEX
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« Reply #5 on: July 10, 2009, 07:48:53 PM »

I had no idea you could still get cloth colored wire Derb. That should look really fine when you get it all wired up. Should make tracing stuff out nice and easy too. Nice find!
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Ed/KB1HYS
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« Reply #6 on: July 10, 2009, 09:34:23 PM »

but do you know the mil spec lacing knot?

Uh actually. I think I do ,maybe, been loooong time since I've had to lace anything. I could ask the girls at work as they still are hand lacing stuff for our Gub contracts, we get the waxed lacing cord in either black or white(natural).

I had to learn it back when I was learning Aircraft repair as a young'in. Also the correct way to orient an Adele Clamp.
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73 de Ed/KB1HYS
Happiness is Hot Tubes, Cold 807's, and warm room filling AM Sound.
 "I've spent three quarters of my life trying to figure out how to do a $50 job for $.50, the rest I spent trying to come up with the $0.50" - D. Gingery
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