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Old 26th November 2012, 01:34 PM   #1
smithie is offline smithie  United Kingdom
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Join Date: Jan 2005
Location: cornwall
Default wiring chinese r-core for mains

hi guys
just brought a wolfson dac7 dac along with a rn20 chinese r-core tx made for the job.
im based in the uk so i need to wire it for the uk mains but am unsure what is what.
i have four wires
ov=black
115v=grn
230=red
scn=yel/grn

i take it as im using 230volts i do not need the green?
so is the red 230v the live?
the 0v black the netural?
and the scn yel/green the netural?
im itching to hook up the dac and try it but cant till im sure i have this right as i dont want to pop the tx.
any fast sure correct assistance would be a great help.
many thanks
smithie
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Old 26th November 2012, 01:42 PM   #2
ide2003 is offline ide2003  Indonesia
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Join Date: Oct 2008
Location: Jakarta
I use similar tx , scn/ screen is connected to chassis earth. If you're not sure connect lightbulb in series with green or red wire. will not lights with correct connection to mains..
be careful not to hook it up with dac first and play safe when working with mains

good luck
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Old 26th November 2012, 01:58 PM   #3
syklab is online now syklab  Hong Kong
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Join Date: Jul 2009
Location: Hong Kong
Quote:
Originally Posted by smithie View Post
hi guys
just brought a wolfson dac7 dac along with a rn20 chinese r-core tx made for the job.
im based in the uk so i need to wire it for the uk mains but am unsure what is what.
i have four wires
ov=black
115v=grn
230=red
scn=yel/grn

i take it as im using 230volts i do not need the green?
so is the red 230v the live?
the 0v black the netural?
and the scn yel/green the netural?
im itching to hook up the dac and try it but cant till im sure i have this right as i dont want to pop the tx.
any fast sure correct assistance would be a great help.
many thanks
smithie
There should be some wiring instruction written on the RN-20. You should only need to connect the 0V and 230V to your power main. Leave the 115V and SCN alone and insulate them individually. Becareful when during with high voltage and measure the output to ensure correct voltage before connecting to your DAC board.

Click the image to open in full size.

Last edited by syklab; 26th November 2012 at 02:12 PM.
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Old 26th November 2012, 02:09 PM   #4
smithie is offline smithie  United Kingdom
diyAudio Member
 
Join Date: Jan 2005
Location: cornwall
hi guys
many thanks.

just realised i just need the black ov and red 230.
so treat me very dumb
red 230 goes to live in the plug and the ov black would go to the netural in a uk plug?
is that correct.
and rest assured i always treat mains voltage as my enermy...hence my dumb nervous questions.
smithie
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Old 26th November 2012, 02:15 PM   #5
syklab is online now syklab  Hong Kong
diyAudio Member
 
Join Date: Jul 2009
Location: Hong Kong
Quote:
Originally Posted by smithie View Post
hi guys
many thanks.

just realised i just need the black ov and red 230.
so treat me very dumb
red 230 goes to live in the plug and the ov black would go to the netural in a uk plug?
is that correct.
and rest assured i always treat mains voltage as my enermy...hence my dumb nervous questions.
smithie
I don't think it matters. My other R-Core have both 0V and 230V in red.
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Old 26th November 2012, 02:20 PM   #6
smithie is offline smithie  United Kingdom
diyAudio Member
 
Join Date: Jan 2005
Location: cornwall
once again many thanks guys
i shall give it a go and stand well back
all the best
smithie
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Old 26th November 2012, 06:09 PM   #7
DF96 is offline DF96  England
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Join Date: May 2007
Use a lamp limiter. People who are used to dealing with mains do this. People who are not used to dealing with mains need it even more.

Yel/Grn is either a screen or the core (or both). It should be connected to the safety ground, probably the chassis.


PS 'netural' should be 'neutral'.
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