DIYbanter

DIYbanter (https://www.diybanter.com/)
-   UK diy (https://www.diybanter.com/uk-diy/)
-   -   Powering a mains radio from a lighting circuit.. Permissible? (https://www.diybanter.com/uk-diy/381542-powering-mains-radio-lighting-circuit-permissible.html)

JimK[_3_] July 21st 15 02:55 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other further down the line?

TIA

Jim K

Tim+[_2_] July 21st 15 03:47 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
JimK wrote:
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?

TIA

Jim K


"It was like that when we moved here". ;-)

Cant see why there should be a problem with it. Perfectly acceptable for a
table lamp with a switched feed. Dunno if you're thinking of a permanently
live unswitched feed.

Or, http://www.ebay.co.uk/itm/301368271756? ;-)

Tim

News July 21st 15 04:03 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
In message , JimK
writes
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?


A surveyor certainly would not check the electrical sockets, and which
circuit fed them. Don't worry about it.

We moved into a new house in 1954, and there was a special socket above
the mantelpiece, for a clock. Memory suggests that was fed from the
lighting ring.
--
Graeme

Tim Watts[_3_] July 21st 15 04:47 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On 21/07/15 16:03, News wrote:
In message , JimK
writes
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?


A surveyor certainly would not check the electrical sockets, and which
circuit fed them. Don't worry about it.

We moved into a new house in 1954, and there was a special socket above
the mantelpiece, for a clock. Memory suggests that was fed from the
lighting ring.


2A sockets and indeed that clock socket you mention are designed to be
fed from the lighting circuits. So personally, I'd stick a 2A in and if
asked it's for a standard lamp.

If you happen to plug a radio in, so be it.

Dave Plowman (News) July 21st 15 05:10 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
In article ,
JimK wrote:
As title really, using a round pin 5a plug & socket?


Would it cause bother on a periodic inspection or some survey or other
further down the line?


Perfectly acceptable to have a 5 amp 3 pin plug and socket on a lighting
circuit for say a table light so it can be switched from the door. What
you actually plug into it doesn't much matter, provided the current draw
is within the limit.

--
*When chemists die, they barium.*

Dave Plowman London SW
To e-mail, change noise into sound.

[email protected] July 21st 15 05:20 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On Tuesday, 21 July 2015 14:55:33 UTC+1, JimK wrote:
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other further down the line?


Its fully compliant


NT

JimK[_3_] July 21st 15 06:51 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
/"It was like that when we moved here". ;-)

Cant see why there should be a problem with it. Perfectly acceptable for a
table lamp with a switched feed. Dunno if you're thinking of a permanently
live unswitched feed. /Q

Mmm ideally would be permanently live to allow radio function independent of light circuit. Thought I'd nick it from the lighting loop...

Jim K

ARW July 21st 15 07:10 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
"Dave Plowman (News)" wrote in message
...
In article ,
JimK wrote:
As title really, using a round pin 5a plug & socket?


Would it cause bother on a periodic inspection or some survey or other
further down the line?


Perfectly acceptable to have a 5 amp 3 pin plug and socket on a lighting
circuit for say a table light so it can be switched from the door. What
you actually plug into it doesn't much matter, provided the current draw
is within the limit.



It would not bother me if it was a 13A socket as long as it was labelled up
as "Radio only"

I have fiited several TV amp power points from the lighting circuit but used
13A sockets as the amp had a wall wart - same for plinth lights.

BTW switched 5A lighting sockets are making a comeback on a lot of the work
I do.

--
Adam


[email protected] July 21st 15 09:07 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On Tuesday, 21 July 2015 19:10:05 UTC+1, ARW wrote:
"Dave Plowman (News)" wrote in message
...
In article ,
JimK wrote:
As title really, using a round pin 5a plug & socket?


Would it cause bother on a periodic inspection or some survey or other
further down the line?


Perfectly acceptable to have a 5 amp 3 pin plug and socket on a lighting
circuit for say a table light so it can be switched from the door. What
you actually plug into it doesn't much matter, provided the current draw
is within the limit.



It would not bother me if it was a 13A socket as long as it was labelled up
as "Radio only"

I have fiited several TV amp power points from the lighting circuit but used
13A sockets as the amp had a wall wart - same for plinth lights.


perfectly effective, but not compliant

BTW switched 5A lighting sockets are making a comeback on a lot of the work
I do.



NT

John Rumm July 22nd 15 04:33 AM

Powering a mains radio from a lighting circuit.. Permissible?
 
On 7/21/2015 9:07 PM, wrote:
On Tuesday, 21 July 2015 19:10:05 UTC+1, ARW wrote:
"Dave Plowman (News)" wrote in message
...
In article ,
JimK wrote:
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?

Perfectly acceptable to have a 5 amp 3 pin plug and socket on a lighting
circuit for say a table light so it can be switched from the door. What
you actually plug into it doesn't much matter, provided the current draw
is within the limit.



It would not bother me if it was a 13A socket as long as it was labelled up
as "Radio only"

I have fiited several TV amp power points from the lighting circuit but used
13A sockets as the amp had a wall wart - same for plinth lights.


perfectly effective, but not compliant


Would you care to mention with what it fails to comply?



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd -
http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Brian-Gaff July 22nd 15 11:32 AM

Powering a mains radio from a lighting circuit.. Permissible?
 
So what are you asking here? I've used a clock point for this as well as a
bayonet connector in the past. You just hide it when you are getting
inspected.
The point I'd worry about is fusing in case the psu or the cable whent
phut.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"JimK" wrote in message
...
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?

TIA

Jim K




JimK[_3_] July 22nd 15 11:33 AM

Powering a mains radio from a lighting circuit.. Permissible?
 
/It would not bother me if it was a 13A socket as long as it was labelled up
as "Radio only"

I have fiited several TV amp power points from the lighting circuit but used
13A sockets as the amp had a wall wart - same for plinth lights.

BTW switched 5A lighting sockets are making a comeback on a lot of the work
I do. /Q

Thanks all.

Just realised that the 5A plugtops don't have fuses in... Presume it all relies on the lighting circuit mcb/fuse?

Jim K

Dave Plowman (News) July 22nd 15 03:06 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
In article ,
Brian-Gaff wrote:
So what are you asking here? I've used a clock point for this as well as
a bayonet connector in the past. You just hide it when you are getting
inspected.
The point I'd worry about is fusing in case the psu or the cable whent
phut.


Pukka clock connectors had a fuse in the plug - same as 13 amp.

ISTR reading about 15 amp three pin plugs with fuses too - would likely be
possible to make a 5 amp with one too, if it hasn't already been done.

--
*Don't worry; it only seems kinky the first time.*

Dave Plowman London SW
To e-mail, change noise into sound.

Charles Hope July 22nd 15 03:18 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
In article ,
Dave Plowman (News) wrote:
In article ,
Brian-Gaff wrote:
So what are you asking here? I've used a clock point for this as well as
a bayonet connector in the past. You just hide it when you are getting
inspected.
The point I'd worry about is fusing in case the psu or the cable whent
phut.


Pukka clock connectors had a fuse in the plug - same as 13 amp.


ISTR reading about 15 amp three pin plugs with fuses too - would likely be
possible to make a 5 amp with one too, if it hasn't already been done.


BBC RD used 5A 3 pin fused plugs in the 1960s/70s. I think I have the odd
one somewhere from when the labs were rewired to 13A.


Lee July 22nd 15 03:30 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On 22/07/2015 15:06, Dave Plowman (News) wrote:
In article ,
Brian-Gaff wrote:
So what are you asking here? I've used a clock point for this as well as
a bayonet connector in the past. You just hide it when you are getting
inspected.
The point I'd worry about is fusing in case the psu or the cable whent
phut.


Pukka clock connectors had a fuse in the plug - same as 13 amp.

ISTR reading about 15 amp three pin plugs with fuses too - would likely be
possible to make a 5 amp with one too, if it hasn't already been done.


There's a YouTube video that shows an old three pin 15A plug, using a
fuse as one of the "pins"....

Mike Clarke July 22nd 15 04:02 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On 22/07/2015 11:33, JimK wrote:

Just realised that the 5A plugtops don't have fuses in... Presume it all relies on the lighting circuit mcb/fuse?


Some do -
http://cpc.farnell.com/1/1/867-mk-el...-pin-plug.html
.. Though at 10 quid each I doubt if many sell.

Though the fuse is somewhat superfluous, assuming the socket is
installed on a circuit with a 5A fuse or 6A mcb.

--
Mike Clarke

Charles Hope July 22nd 15 04:11 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
In article , Lee
wrote:
On 22/07/2015 15:06, Dave Plowman (News) wrote:
In article , Brian-Gaff
wrote:
So what are you asking here? I've used a clock point for this as well
as a bayonet connector in the past. You just hide it when you are
getting inspected. The point I'd worry about is fusing in case the psu
or the cable whent phut.


Pukka clock connectors had a fuse in the plug - same as 13 amp.

ISTR reading about 15 amp three pin plugs with fuses too - would likely
be possible to make a 5 amp with one too, if it hasn't already been
done.


There's a YouTube video that shows an old three pin 15A plug, using a
fuse as one of the "pins"....


Yes, we had those at TV Centre for protected supplies. Made by Dorman &
Smith (D&S).


Dave Plowman (News) July 22nd 15 04:18 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
In article ,
Lee wrote:
There's a YouTube video that shows an old three pin 15A plug, using a
fuse as one of the "pins"....


I'd guess that is actually a D&S, which is a 13 amp variant, for use on
the same 13 amp ring circuits. At one time, there wasn't just the one
design of plug and socket

Luckily, the D&S fell out of favour. It was a lethal design. Much used by
local councils in an attempt to electrocute their problem tenants.

--
*Be nice to your kids. They'll choose your nursing home.

Dave Plowman London SW
To e-mail, change noise into sound.

Charles Hope July 22nd 15 04:25 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
In article ,
Dave Plowman (News) wrote:
In article ,
Lee wrote:
There's a YouTube video that shows an old three pin 15A plug, using a
fuse as one of the "pins"....


I'd guess that is actually a D&S, which is a 13 amp variant, for use on
the same 13 amp ring circuits. At one time, there wasn't just the one
design of plug and socket


Luckily, the D&S fell out of favour. It was a lethal design. Much used by
local councils in an attempt to electrocute their problem tenants.


certainly in the'60s you could buy the fuses in Selfridges. That was when
it was a real department store.


Lee July 22nd 15 04:54 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On 22/07/2015 16:18, Dave Plowman (News) wrote:
In article ,
Lee wrote:
There's a YouTube video that shows an old three pin 15A plug, using a
fuse as one of the "pins"....


I'd guess that is actually a D&S, which is a 13 amp variant, for use on
the same 13 amp ring circuits. At one time, there wasn't just the one
design of plug and socket

Luckily, the D&S fell out of favour. It was a lethal design. Much used by
local councils in an attempt to electrocute their problem tenants.


Ah yes, it was 13A. Link to Youtube:
https://www.youtube.com/watch?v=sLnIn8y75WE

Has a lot of other videos that may be of interest.


ARW July 22nd 15 06:28 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
"John Rumm" wrote in message
o.uk...
On 7/21/2015 9:07 PM, wrote:
On Tuesday, 21 July 2015 19:10:05 UTC+1, ARW wrote:
"Dave Plowman (News)" wrote in message
...
In article ,
JimK wrote:
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?

Perfectly acceptable to have a 5 amp 3 pin plug and socket on a
lighting
circuit for say a table light so it can be switched from the door. What
you actually plug into it doesn't much matter, provided the current
draw
is within the limit.


It would not bother me if it was a 13A socket as long as it was labelled
up
as "Radio only"

I have fiited several TV amp power points from the lighting circuit but
used
13A sockets as the amp had a wall wart - same for plinth lights.


perfectly effective, but not compliant


Would you care to mention with what it fails to comply?



It complies.

However the socket may be better labelled up as "Socket fed from lighting
circuit" depending on the position of it.

--
Adam


ARW July 22nd 15 07:38 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
wrote in message
...
On Tuesday, 21 July 2015 14:55:33 UTC+1, JimK wrote:
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?


Its fully compliant



Not if the manufacturer of the radio says you have to use a 3A fuse.

--
Adam


[email protected] July 23rd 15 12:02 AM

Powering a mains radio from a lighting circuit.. Permissible?
 
On Wednesday, 22 July 2015 19:38:59 UTC+1, ARW wrote:
nt wrote in message
...
On Tuesday, 21 July 2015 14:55:33 UTC+1, JimK wrote:


As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?


Its fully compliant



Not if the manufacturer of the radio says you have to use a 3A fuse.


Any such appliance is either non-compliant or such advice given with it would be wrong. All new appliances are required to be safe on a 13A fuse.

If 13A sockets on a lighting circuit is compliant, what's to stop one putting an entire floor of 13A sockets on a 6A 1mm2 radial?


NT

Graham.[_5_] July 23rd 15 12:47 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On Wed, 22 Jul 2015 15:06:57 +0100, "Dave Plowman (News)"
wrote:

In article ,
Brian-Gaff wrote:
So what are you asking here? I've used a clock point for this as well as
a bayonet connector in the past. You just hide it when you are getting
inspected.
The point I'd worry about is fusing in case the psu or the cable whent
phut.


Pukka clock connectors had a fuse in the plug - same as 13 amp.


I don't think I have seen an unused clock connector, the square MK
ones certainty had one, and this Wylex round one has two, doubling as
pins. Eat your heart out D&S.

http://www.fam-oud.nl/~plugsocket/GB...ctor_parts.jpg

--

Graham.

%Profound_observation%

Graham.[_5_] July 23rd 15 12:59 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
On Wed, 22 Jul 2015 19:38:54 +0100, "ARW"
wrote:

wrote in message
...
On Tuesday, 21 July 2015 14:55:33 UTC+1, JimK wrote:
As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?


Its fully compliant



Not if the manufacturer of the radio says you have to use a 3A fuse.


I always like to comply with manufactures instructions but sometimes
they don't make it easy.
https://www.flickr.com/photos/g3zvt/8571874309/

(Yes I know it's not connected directly to the mains)


--

Graham.

%Profound_observation%

ARW July 23rd 15 06:54 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
wrote in message
...
On Wednesday, 22 July 2015 19:38:59 UTC+1, ARW wrote:
nt wrote in message
...
On Tuesday, 21 July 2015 14:55:33 UTC+1, JimK wrote:


As title really, using a round pin 5a plug & socket?

Would it cause bother on a periodic inspection or some survey or other
further down the line?

Its fully compliant



Not if the manufacturer of the radio says you have to use a 3A fuse.


Any such appliance is either non-compliant or such advice given with it
would be wrong. All new appliances are required to be safe on a 13A fuse.


Name that law and stick it in the Wiki then.


If 13A sockets on a lighting circuit is compliant, what's to stop one
putting an entire floor of 13A sockets on a 6A 1mm2 radial?


Nothing if the sockets are correctly labelled up.


--
Adam


Mike Humphrey July 23rd 15 06:56 PM

Powering a mains radio from a lighting circuit.. Permissible?
 
wrote:

If 13A sockets on a lighting circuit is compliant, what's to stop one putting an entire floor of 13A sockets on a 6A 1mm2 radial?


Nothing, if that's appropriate for the intended use, though I'd
struggle to think of one. A load of sockets for phone charging in a
coffee shop maybe?

Otherwise, it doesn't comply with the regs as you haven't selected a
suitable design for the expected use of the installation.

Mike

John Rumm July 24th 15 02:16 AM

Powering a mains radio from a lighting circuit.. Permissible?
 
On 7/23/2015 6:56 PM, Mike Humphrey wrote:
wrote:

If 13A sockets on a lighting circuit is compliant, what's to stop one putting an entire floor of 13A sockets on a 6A 1mm2 radial?


Nothing, if that's appropriate for the intended use, though I'd
struggle to think of one. A load of sockets for phone charging in a
coffee shop maybe?


I have a 6A protected radial socket circuit here. It feeds my comms
cabinet and is deigned to support the broadband routers, network switch,
NAS, PABX and other similar kit.

Even if someone really decided it was sensible to plug a fan heater into
one of the sockets, the worst they could do is trip the MCB.

Otherwise, it doesn't comply with the regs as you haven't selected a
suitable design for the expected use of the installation.


For the OPs situation that is not a problem though is it?



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd -
http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/


All times are GMT +1. The time now is 08:42 AM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 DIYbanter