Is it just me that believes that the S stands for separated not safety?

I had a good argument today in a lighting shop with a shop assistant today
whilst helping my Mum buy some new lights for her bathroom. The assistant
said S was for safety and produced fitting documents from lots of lights in
the shop to prove he was correct, I only had the 16th edition (pg25 blue
cover) to show him that it means seperated.

A quick look on Google shows even vent-axia are using the word safety not
seperated on their SELV equipment.

Has the 16th edition gone out of date?

Adam

ARWadsworth wrote:

Is it just me that believes that the S stands for separated not safety?

I had a good argument today in a lighting shop with a shop assistant today
whilst helping my Mum buy some new lights for her bathroom. The assistant
said S was for safety and produced fitting documents from lots of lights in
the shop to prove he was correct, I only had the 16th edition (pg25 blue
cover) to show him that it means seperated.

A quick look on Google shows even vent-axia are using the word safety not
seperated on their SELV equipment.

Has the 16th edition gone out of date?

Page 18 of my on-site guide (brown cover inc ammendments 1 & 2) defines
it as "separated"

--
Cheers,

John.

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

SELV is Safety Extra Low Voltage - the shop assistant is correct.

the light or light fitting will be assessed to a prodcut standard for
compliance with relevant European Directives before being CE marked.

Typical Definition:
SELV CIRCUIT: A SECONDARY CIRCUIT which is so designed and protected
that under
normal operating conditions and single fault conditions, its voltages
do not exceed a safe
value.

i.e. secondary circuit seperated from hazardous circuit, such as mains,
by basic insulation and earth or double/reinforced insulation where the
voltage does not exceed 42.4V ac pk or 60V dc.

regards
Charlie

In article .com,
charlieB wrote:
i.e. secondary circuit seperated from hazardous circuit, such as mains,
by basic insulation and earth or double/reinforced insulation where the
voltage does not exceed 42.4V ac pk or 60V dc.

The warning symbol on my Fluke DVM comes on at approx 30v DC...

--
*Middle age is when work is a lot less fun - and fun a lot more work.

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

"Dave Plowman (News)" wrote:
In article .com,
charlieB wrote:
i.e. secondary circuit seperated from hazardous circuit, such as mains,
by basic insulation and earth or double/reinforced insulation where the
voltage does not exceed 42.4V ac pk or 60V dc.

The warning symbol on my Fluke DVM comes on at approx 30v DC...

30VRMSAC = 42.4V peak - which is probably where the confusion comes in.

In article ,
"ARWadsworth" writes:
Is it just me that believes that the S stands for separated not safety?

It has changed. It used to be "Safety", but it is now "Separated".
IIRC, this changed at least 10 years ago, I think when PELV was
introduced.

I had a good argument today in a lighting shop with a shop assistant today
whilst helping my Mum buy some new lights for her bathroom. The assistant
said S was for safety and produced fitting documents from lots of lights in
the shop to prove he was correct, I only had the 16th edition (pg25 blue
cover) to show him that it means seperated.

A quick look on Google shows even vent-axia are using the word safety not
seperated on their SELV equipment.

Has the 16th edition gone out of date?

No -- it's the other way around -- the instructions and the
shop assistant were out of date.

--
Andrew Gabriel

"Andrew Gabriel" wrote in message
...
In article ,
"ARWadsworth" writes:
Is it just me that believes that the S stands for separated not safety?

It has changed. It used to be "Safety", but it is now "Separated".
IIRC, this changed at least 10 years ago, I think when PELV was
introduced.

I had a good argument today in a lighting shop with a shop assistant
today
whilst helping my Mum buy some new lights for her bathroom. The assistant
said S was for safety and produced fitting documents from lots of lights
in
the shop to prove he was correct, I only had the 16th edition (pg25 blue
cover) to show him that it means seperated.

A quick look on Google shows even vent-axia are using the word safety not
seperated on their SELV equipment.

Has the 16th edition gone out of date?

No -- it's the other way around -- the instructions and the
shop assistant were out of date.

--
Andrew Gabriel

Has anyone got the red covered 16th edition they could look in please?

Adam

In my Brown 15th Edition 1981 :-
SELV is not in "Definitions"
It is in the index as Safety ELV
and defined in Part 4 as "Safety ELV sourced by a "safety isolating
transformer , secondary being isolated from earth".
"ARWadsworth" wrote in message
. uk...

"Andrew Gabriel" wrote in message
...
In article ,
"ARWadsworth" writes:
Is it just me that believes that the S stands for separated not safety?

It has changed. It used to be "Safety", but it is now "Separated".
IIRC, this changed at least 10 years ago, I think when PELV was
introduced.

I had a good argument today in a lighting shop with a shop assistant
today
whilst helping my Mum buy some new lights for her bathroom. The
assistant
said S was for safety and produced fitting documents from lots of
lights
in
the shop to prove he was correct, I only had the 16th edition (pg25
blue
cover) to show him that it means seperated.

A quick look on Google shows even vent-axia are using the word safety
not
seperated on their SELV equipment.

Has the 16th edition gone out of date?

No -- it's the other way around -- the instructions and the
shop assistant were out of date.

--
Andrew Gabriel

Has anyone got the red covered 16th edition they could look in please?

Adam