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SimplyPats Portable Appliance Testing Software
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PostPosted: Fri Jan 20, 2012 7:28 pm 
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Joined: Sun Mar 28, 2010 7:45 am
Posts: 8
I have an antique Singer sewing machine to test.

It has two wires only so I asume it's double insulated, the strange thing is one wire is red the other yellow.

I have tested hundreds of old sewing machines, some red and black, some black and white, both black but never yellow and red.

I've searched the net and can't find the answer.

It is in immaculate condition, (the nuetral isn't just cut off somewhere down the power lead, and it hasn't been rewired).

Does anyone know why these colours were used?


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PostPosted: Sun Jan 22, 2012 8:14 pm 
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Joined: Sun Aug 08, 2010 8:44 am
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Location: Cornwall
Hi mbousfield
If you have tested loads “hundreds” of these types of sewing machines and have not come across this combination of colours before, could you possibly assume that it had been re-wired with excuse the term some odd/old cable kicking around by a DIY person?. I see you do mention it has not been re-wired but hay, just seems a little strange use of colours utilised.

Also you mention about it being an “antique Singer sewing machine” I would question if it is “Double insulated” as you mention. Back in the olden days it was possibly not even heard of :!:

It might be worth contacting Singer or a Singer Enthusiast forum for some advice :idea:

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PostPosted: Tue Feb 14, 2012 9:49 pm 
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Mystery solved! Good old wiki. These are the colours used in Brazil.


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PostPosted: Tue Feb 14, 2012 10:12 pm 
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Location: Cornwall
Hi mbousefield

Glad you sorted the problem, and thanks for posting so others can now see the answer.

Is this the info that you found?

Brazil Wiring:

Phases: yellow, red
Neutral: blue
Earth: green

Regards, Richard


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PostPosted: Fri Feb 24, 2012 3:32 pm 
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Quick question....is the machine CE rated? Because the wiring should be the normal colour coding?

Just a thought... :)


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PostPosted: Fri Mar 16, 2012 1:08 pm 
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The rating plate will tell you if it is class 1 or 2.
No rating plate (it's old) then you must test it as a class 1 appliance, as per the CoP on page 72.
With no cpc it will FAIL.
Usually no rating plate = FAIL.

Working your way around the fact that there is no rating plate, and therefore no construction information, is the wrong way to PAT test.

Matt.

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