Colourblind

[nozspark]

Im red/green colour deficient! never stopped me working as a military electrician (although my trade was changed from aircraft which have a tentency to fall out of the sky (and are full of electronics and other silly components) to ships/submarines).. it did however stop me getting in the fire brigade ! im currently converting my quals to C&G stuff and no where along the line have i been asked colur stuff!!! not even for Public liability insurance or Indemnity



oh yeah im colour perception level 4 (according to military)(nhs just said i was red green deficent.)..... i failed the silly isharrah test and also failed the lantern test.... i did pass the connecting wires test though....

ironically i passed the other colour test used for the police ,its called the "city test"

This was my trade and although I had a colour perception test at interview stage and then again every few years, I wouldn't say it would have made that much difference. Any component we used was specific for the job and had to be fitted by part number and all the wires in equipment tended to be the same colour (either pink or white) which is great when you're trying to identify the wires coming off a 50 odd pin plug or socket

 

[ban-all-sheds]

And even better when the equipment manufacturer has made it using 50-pin plugs & sockets with rotational symmetry....

 

[nozspark]

That is never the way with Avionic stuff, the connectors are usually of a shape which will only connect one way, or a round plug/socket with location/orientation pins/lugs..

Somp people still managed to conect them the wrong way though

 

[swidders]

Thanks all for your replies - I shall have to see what course prequisits dictate.

Like the idea of a colour chart to compare and contrast. D'Oh, obious really.

Also like the idea of electronic thingy - will research this.

 

[Adrian80]

you should get in touch with the rnib, you can find these people really useful. The people in these charities know of all sorts of gadgets to help people.

good luck

 

[Spark123]

Nah, harmonisation is to do with us bowing to brussels and bringing in a worse colour scheme.

Unless your mind is made up and you don't want to be confused by the facts, read the links from this page:

http://www.theiet.org/publishing/wiring-regulations/colour/[/QUOTE]

I don't follow why the IET/whoever subcommittee bowed to the colour scheme which CENELEC were happy with, CENELEC which incidentally are based in Brussels
Just seems like a backwards step to me - if it isn't broken then dont fix it.
Or is it if it isn't broken, keep fixing it till it is.

That is never the way with Avionic stuff, the connectors are usually of a shape which will only connect one way, or a round plug/socket with location/orientation pins/lugs..

Somp people still managed to conect them the wrong way though

We tend to use plesseys which can have any number of pins and are keyed so they can't be insterted the wrong way around, also used are multi plug connectors made by mcgeoch and amphenol.
These are all keyed so they need to be insterted correctly, however some of them if forced enough will instert with the keyway incorrect.

 

[ban-all-sheds]

That is never the way with Avionic stuff, the connectors are usually of a shape which will only connect one way, or a round plug/socket with location/orientation pins/lugs..

Well - according to someone I once worked with, who had worked for a UK company that did defence work (NNNPD but they have a very similar name to a large US company), a round multi-pin plug & socket with no key and several rotationally symmetric positions was just what they did for a bit of kit to go into a machine with a name which means "hunter" in Hebrew...

 

[ban-all-sheds]

I don't follow why the IET/whoever subcommittee bowed to the colour scheme which CENELEC were happy with,

Well - I'm sorry that you're unable to follow the documents on the IET website, and that you can't grasp why there are many benefits to harmonisation.

I do however find your attitude that any change is "bowing" to somebody else somewhat unpleasant.

CENELEC which incidentally are based in Brussels

And what relevance is that? They've got to be somewhere...

Just seems like a backwards step to me.

Thank God you aren't in a position of influence then.

 

[swidders]

You'd think johhny foreigner would come to our way of thinking, instead of vice versa. After all, we won the war.........

 

[Spark123]

I don't see many benefits from harmonization at all over leaving it as it was. I am sure it cost a lot of firms up and down the country a lot of money ditching all their old colour cables to come into line with europe, and you say yourself there are advantages of staying to one colour scheme in a premises.
I do find it somewhat annoying that we seem to spend more time following daft rulings (imo) from those above us, such as the change of cable colours and what - if any - advantages were there to changing fire extinguisher colours all back to red?

 

[Adam_151]

I don't believe colour blindness is anywhere near as much of a problem for women as it is in men as women, something to do with genetics!

Thats correct, the gene for colour blindness is recessive (ie. if a non colourblind gene exists as well as the colourblind one, the non colourblindness will take precedence), the problem comes becuase the gene is stored in the chromosome thats "XX in women and XY" in men, and happens to be in the fit thats 'missing' on the male one, so we only have one copy (so if its damaged, we are ****ed) while the lasses have two copies, so are much less likely to be colourblind

 

[ban-all-sheds]

the lasses have two copies, so are much less likely to be colourblind

So it's nothing to do with them having eyes in the back of their head?

 

[securespark]

Nah, harmonisation is to do with us bowing to brussels

Indirectly.

We changed flexible cable colours in the UK some time ago (1971, I believe) from red/black/green to brown/blue/green-yellow.

The fixed wiring colour changes (at least the change to brown/blue) recently were to bring us in line with that standard, according to my 17th tutor.