3 -Pin Electrical Plug-Wiring, Simple, Right?


Postby Campo1988 » Fri Mar 27, 2009 8:50 pm

Hi all.

I have a set of 2.1 speakers and sub-woofer. I noticed the plug has been looking dangerous because the insulation has been coming away exposing the cables (and I think even bare wires) underneath. I go to repair it, and find there are no screws, so I cannot get [i]inside[/i] the plug, but the 3A fuse is underneath (removable via a cover).

I find a spare plug, and am able to get inside it. So I snip the cable from the sub-woofer, and find there are 3 wires, 1 black and yellow, and 2 black. :?

What do I do?!

Thanx.
Campo1988
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Joined: Fri Mar 27, 2009 8:40 pm

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Postby wimiu012uk » Sat Mar 28, 2009 6:51 pm

Go to opticians for an eye test !!!

Should be three wires

Blue connect to neutral (N)
Brown connect to live (L)
Yellow and green connect to earth (E)
wimiu012uk
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Joined: Sat Oct 11, 2008 11:31 am


Postby plumbbob » Sat Mar 28, 2009 9:03 pm

Well that was a useful post.

All UK equipment must now be supplied with a 13 amp plug already fitted. So to save costs nearly all manufacturers use moulded plugs.

The three colours you describe are not standard colours as you have guessed.

The only route is to open the case and trace which wire does what.

This is most unusual.
plumbbob
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Joined: Wed May 07, 2008 9:59 pm


Postby kbrownie » Sun Mar 29, 2009 10:42 am

Not my field sound systems, but sounds a strange combination of core colours.
I'd assume a line conductor (Brown), a neutral conductor (Blue) and a Circuit Protective Conductor(Green/Yellow bands)
But may be the line and neutral don't need to be in polarity and may work either way.
But for safety reasons, i'd suggest the most practical thing to do, would be as follows.
The plug you have cut off, never going to be fit for any purpose now, is cut open and see what configuration is inside and apply that wiring to new plug.
Kind Regards
sorry unable to help further.
KB
kbrownie
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Joined: Mon Mar 05, 2007 9:36 pm


Postby rosebery » Sun Mar 29, 2009 11:14 am

"Go to opticians for an eye test !!!"

LoL - he's not the only one!!

"Should be three wires

Blue connect to neutral (N)
Brown connect to live (L)
Yellow and green connect to earth (E)"

He's got two blacks and a black/yellow!

@ Campo - afraid I've no idea and I'm not going to guess 'cos if I guess wrong and your sub blows up it isn't going to be my fault! Call the manufacturer is the best advice I can give.

Cheers
rosebery
Posts: 2022
Joined: Wed Sep 26, 2007 8:55 pm


Postby Campo1988 » Tue Mar 31, 2009 4:57 pm

[quote="wimiu012uk"]Go to opticians for an eye test !!!

Should be three wires

Blue connect to neutral (N)
Brown connect to live (L)
Yellow and green connect to earth (E)[/quote]

Give me the eye test. I told what there was. :roll:



[quote="plumbbob"]Well that was a useful post.

All UK equipment must now be supplied with a 13 amp plug already fitted. So to save costs nearly all manufacturers use moulded plugs.

The three colours you describe are not standard colours as you have guessed.

The only route is to open the case and trace which wire does what.

This is most unusual.[/quote]

Like I said, the wires were coming away. I helped speed-up the process.



[quote="kbrownie"]Not my field sound systems, but sounds a strange combination of core colours.
I'd assume a line conductor (Brown), a neutral conductor (Blue) and a Circuit Protective Conductor(Green/Yellow bands)
But may be the line and neutral don't need to be in polarity and may work either way.
But for safety reasons, i'd suggest the most practical thing to do, would be as follows.
The plug you have cut off, never going to be fit for any purpose now, is cut open and see what configuration is inside and apply that wiring to new plug.
Kind Regards
sorry unable to help further.
KB[/quote]

I asked someone I know who is like a caretaker/similar, and he said they probably don't require polarity. He said he'd have a look at it for me.



[quote="rosebery"]"Go to opticians for an eye test !!!"

LoL - he's not the only one!!

"Should be three wires

Blue connect to neutral (N)
Brown connect to live (L)
Yellow and green connect to earth (E)"

He's got two blacks and a black/yellow!

@ Campo - afraid I've no idea and I'm not going to guess 'cos if I guess wrong and your sub blows up it isn't going to be my fault! Call the manufacturer is the best advice I can give.

Cheers[/quote]

Yeah, I don't want to get shocked either. I got it from a PC supply/parts shop. And I don't know where they got it from, i.e. that not being my business, I don't think.
Campo1988
Posts: 2
Joined: Fri Mar 27, 2009 8:40 pm


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