Labelling high temperature wiring

[RFguy]

What do people do for labelling wiring stuff under the cowl for wiring ?

IE 200 deg C survival and meeting flammability tests ?

 

I see there are a few systems. None of which I already have.

The printing setup is quite special it seems , the most accessible being a print between Kapton (Polyiamide) 

 

Is there anything such as a Brother P-Touch high temperature  tape ?

-glen

[turboplanner]

2 hours ago, RFguy said:

What do people do for labelling wiring stuff under the cowl for wiring ?

IE 200 deg C survival and meeting flammability tests ?

 

I see there are a few systems. None of which I already have.

The printing setup is quite special it seems , the most accessible being a print between Kapton (Polyiamide) 

 

Is there anything such as a Brother P-Touch high temperature  tape ?

-glen

Coloured autocable and a wiring diagramme.

[RFguy]

coloured TEF  ???

 

auto cables are 105/135C, not high enough in my book, gets too close to the glass temperature of the insulation.

 

[old man emu]

Why not adapt the system of coloured bands that is used to identify electrical resistors?

 

Use heat shrink tube on the wires to create a pattern and make up a written record of what wires each pattern represents.

 

It is common to have earth wires solid black, but if you are using white aviation quality wiring, then you would have to use black heat shrink for those wires. As long as your maintenance records have a copy of the Legend for the code, anyone can interpret the rings of heat shrink on a wire. The important thing to do, however, is to indicate which end of the sequence is the start. You could do that by choosing one colour of shrink tube, or by simply putting  on a spot of paint or nail polish (I suggest fluorescent green) at the starting end.

[M61A1]

If money is no object you can get a machine that laser etches the insulation at preset intervals. 

I use a white heatshrink sleeve and label each end of the cable, then I put a clear heatshrink over it, because I found out that every marker I have tried will wear or rub off eventually.

Write the label before shrinking. 

[spacesailor]

Please correct! .

Big Boys Outrun Young Girls But Violet Generally Wins

Used to know it off the top of my head, 

spacesailor

[spacesailor]

Got it !.

wiki , list of electronic color code mnemoniccs.

spacesailor

[onetrack]

RS components is your friend, when you're looking for electrical stuff ....

 

https://au.rs-online.com/web/p/cable-marking-kits/2104558/?ef_id=CjwKCAiAlNf-BRB_EiwA2osbxR4rf3sqybv87eQOo4YaFOiEuRaL3ibEz5wpVkREHpAdhqO78Bnz8xoC6XgQAvD_BwE:G:s&s_kwcid=AL!8733!3!434583987486!!!g!335281136601!&cm_mmc=AU-PLA-DS3A-_-google-_-PLA_AU_EN_Cables_%26_Wires_Whoop-_-(AU:Whoop!)+Cable+Marking+Kits-_-2104558&matchtype=&aud-827186183886:pla-335281136601&gclid=CjwKCAiAlNf-BRB_EiwA2osbxR4rf3sqybv87eQOo4YaFOiEuRaL3ibEz5wpVkREHpAdhqO78Bnz8xoC6XgQAvD_BwE&gclsrc=aw.ds

[Yenn]

jim Weir of Kitplanes described using the resistor code colours for marking with shrink wrap. He had a system that had for example all engine wires starting with 1 and all instrument wires with 2 and then a further three numbers. The start end also had to be marked.

Really unless you have a very complex engine there is not much wiring that is not apparent in its purpose firewall forward.Starter cables are heavy, alternator cables a bit less so, CHT and EGT are lightweight and visibly traceable. Wires going to relays can usually be seen easily.

[danny_galaga]

I've decided I'm not marking anything. Just gonna guess each time I need to know 😂

[old man emu]

49 minutes ago, danny_galaga said:

I've decided I'm not marking anything. Just gonna guess each time I need to know

That's how you end up with a mare's nest.

[M61A1]

5 hours ago, spacesailor said:

Please correct! .

Big Boys Outrun Young Girls But Violet Generally Wins

Used to know it off the top of my head, 

spacesailor

We were taught in the RAAF that it was Bitter Beer Rots Our Young Gut But Vodka Goes Well.

[danny_galaga]

2 hours ago, old man emu said:

That's how you end up with a mare's nest.

Meh, I doubt my plane will ever get off the ground so why overthink it 😃

[tillmanr]

M61 you were in a better mannered era of the force than I was. Our patter ended with virgins gone west.

[flyhi]

10 minutes ago, tillmanr said:

M61 you were in a better mannered era of the force than I was. Our patter ended with virgins gone west.

Virgins gone West was how it was in the old PMG too.

 

[M61A1]

54 minutes ago, tillmanr said:

M61 you were in a better mannered era of the force than I was. Our patter ended with virgins gone west.

Yes there was another. It would be considered a bit on the racist side these days. Even more so after recent events.

There was one that ended wit "Violet Goes Willingly" or "Virgins Go Wild", but the first bit was the same.

I doubt that any of them would be acceptable in today's defence force.

Edited December 14, 2020 by M61A1

[skippydiesel]

Not sure why you want to label engine compartment cables - they are mostly short runs, that terminate at a point that makes their application obvious.

 

Behind the instrument panel - different story all -together.

[M61A1]

22 minutes ago, skippydiesel said:

Not sure why you want to label engine compartment cables - they are mostly short runs, that terminate at a point that makes their application obvious.

 

Behind the instrument panel - different story all -together.

It's very handy when you have a whole bunch of wires disconnected, possibly with the engine out. Makes it very easy to ensure that they go back to the correct place.

[skippydiesel]

1 hour ago, M61A1 said:

It's very handy when you have a whole bunch of wires disconnected, possibly with the engine out. Makes it very easy to ensure that they go back to the correct place.

So you label everything, with whatever system you choose-- before engine removal--- engine reinstalled -- you remove labels as no longer required.😀

[M61A1]

52 minutes ago, skippydiesel said:

So you label everything, with whatever system you choose-- before engine removal--- engine reinstalled -- you remove labels as no longer required.😀

Or...Just label it once and never have to do it again. Your choice.

[old man emu]

Labelling the wiring makes it easier to chase a circuit is something doesn't work, after the engine goes in and before the maiden flight.

[spacesailor]

M61

All those "not suitable for students " are on that wiki list. 

spacesailor

[Blueadventures]

I do it a simple way, pencil on paper and clear heat drink over. Pencil won’t fade over time and pen ink will.

[old man emu]

1 hour ago, Blueadventures said:

pencil on paper

Ahh! Those Russians!

[Jaba-who]

Seems the original quest was for something that was fire/flame resistant. 
None of these ( except maybe  the use of coloured Tefzel - which is  available. ) But doesn’t really  provide a foolproof easy labelling system ( since you need a copy of the code with you. Inevitably  you have a problem at a far off strip and you end up without your code book or you end up in a loom with multiple wires of the same colour etc ) 

Frankly  I don’t know of one either but I decided to take the risk and just label things in English properly -  use short bits of clear heat shrink with a laser printer printed (size 8 font) paper strip under it. The short bit of heat shrink might be flammable but in the grand scheme of things the heat shrink bits are about a couple of cm long so the risk is small but the gain in labelling immense. 
Have completely rewired my Jabiru multiple times and worked on parts of the wiring etc many times. And when it comes to working on it easily you really need every wire labelled at both ends with a text label. No need then for codes and records. 
 

If someone produced a heat resistant heat shrink equivalent I’d use it in a flash  but so far not found anything that works as well as a printed label under clear heat shrink. 

Edited December 15, 2020 by Jaba-who