When did red BS1362 fuse colour coding come in?
js.b1
I have a B.G. (British General) BS1362 fuse which is 3A, but turquoise
in colour rather than red.
John Rumm
I just looked at BS 1362:1973, and it seems to make no mention of colour
coding - so its probably a convention rather than a standard.
--
Cheers,
John.
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ARWadsworth
> On 04/01/2011 14:43, js.b1 wrote:
>
>> When did BS1362 fuse colour coding come in?
>>
>> I have a B.G. (British General) BS1362 fuse which is 3A, but
>> turquoise in colour rather than red.
>
> I just looked at BS 1362:1973, and it seems to make no mention of
> colour coding - so its probably a convention rather than a standard.
I am sure it has been asked before on the group but I cannot find it now (or
the answer if there was one)
I come across these fuses from time to time and they are almost certainly
going on for 40 years old.
Julian, are there any ASTA markings on the old fuse?
--
Adam
js.b1
wrote:
> I am sure it has been asked before on the group but I cannot find it now (or
> the answer if there was one)
> I come across these fuses from time to time and they are almost certainly
> going on for 40 years old.
> Julian, are there any ASTA markings on the old fuse?
None.
Rolling the fuse around I get...
B.G.
3A
VF
BS1362
What sparked (!) my question was it came off an electric blanket.
I know the blanket is at least 15 years old, most likely closer to 25
years and the unshielded plug had pins that were "pre cambrian" going
by the level of corrosion on them. So went back this afternoon and
chopped the cable off. Will quietly pick up a BS marked replacement
blanket and fit it to the relative's spare bed tomorrow.
Thanks all.
dennis@home
"js.b1" <js...@ntlworld.com> wrote in message
news:91d27216-1c78-4e0b...@15g2000vbz.googlegroups.com...
> On Jan 4, 4:37 pm, "ARWadsworth" <adamwadswo...@blueyonder.co.uk>
> wrote:
>> I am sure it has been asked before on the group but I cannot find it now
>> (or
>> the answer if there was one)
>> I come across these fuses from time to time and they are almost certainly
>> going on for 40 years old.
>> Julian, are there any ASTA markings on the old fuse?
>
> None.
That means it may not be the rating it claims to be.
The ASTA standards/checks were introduced to fix the fuses as they didn't
work as they were supposed to in many cases.
>
> Rolling the fuse around I get...
> B.G.
> 3A
> VF
> BS1362
>
> What sparked (!) my question was it came off an electric blanket.
>
> I know the blanket is at least 15 years old, most likely closer to 25
> years and the unshielded plug had pins that were "pre cambrian" going
> by the level of corrosion on them. So went back this afternoon and
> chopped the cable off. Will quietly pick up a BS marked replacement
> blanket and fit it to the relative's spare bed tomorrow.
Low voltage?
>
> Thanks all.
js.b1
wrote:
> The ASTA standards/checks were introduced to fix the fuses as they didn't
> work as they were supposed to in many cases.
Ah, that is ok, the electric blanket heating wire provides a fusing
capability to protect a non-functioning fuse :-)
> Low voltage?
I only know of 230VAC electric blankets (LV).
ARWadsworth
> Will quietly pick up a BS marked replacement
> blanket and fit it to the relative's spare bed tomorrow.
>
> Thanks all.
I must confess that a couple of years ago a friend of mine was worried about
her elderly mother's electric blanket (and she had good reason to worry). My
friend wanted to buy her mother a new blanket but her mother refused to let
her. Her mother agreed that if I tested the blanket and said it was unsafe
then she would allow her daughter to buy her a new one for Xmas. The test
was me putting my multimeter across the LN pins on the plug whilst on the
continuity setting. If it bleeped then the blanket was unsafe.
The old lady got her new electric blanket and still kept her dignity.
--
Adam
dennis@home
"js.b1" <js...@ntlworld.com> wrote in message
news:34d4a318-49ae-4299...@w18g2000vbe.googlegroups.com...
> On Jan 4, 7:36 pm, "dennis@home" <den...@killspam.kicks-ass.net>
> wrote:
>> The ASTA standards/checks were introduced to fix the fuses as they didn't
>> work as they were supposed to in many cases.
>
> Ah, that is ok, the electric blanket heating wire provides a fusing
> capability to protect a non-functioning fuse :-)
Ah, down stream current protection. ;-)
>
>> Low voltage?
>
> I only know of 230VAC electric blankets (LV).
You know what I meant, if not let someone else hold your hand while shopping
for a new one.
ARWadsworth
Bed wetting old gits need SELV blankets.
--
Adam
js.b1
wrote:
> Bed wetting old gits need SELV blankets.
Would be bed wetting old gits if the were HV blankets :-)
ARWadsworth
Well you would not want to hold Dennis' hand whilst he tried it out.
--
Adam
m...@privacy.net
"ARWadsworth" <adamwa...@blueyonder.co.uk> wrote:
> I must confess that a couple of years ago a friend of mine was worried
> about her elderly mother's electric blanket (and she had good reason to
> worry). My friend wanted to buy her mother a new blanket but her mother
> refused to let her. Her mother agreed that if I tested the blanket and
> said it was unsafe then she would allow her daughter to buy her a new one
> for Xmas. The test was me putting my multimeter across the LN pins on the
> plug whilst on the continuity setting. If it bleeped then the blanket was
> unsafe.
>
> The old lady got her new electric blanket and still kept her dignity.
>
I remember inspecting my mother's electric blanket around about 1974. It
consisted of an element and flex. The rest had just about completely
disappeared in the previous 10 years (had the moths been active). She happily
got a replacement.
The original replaced a fire damaged one belonging to my sister which caught
fire whilst still under warranty. Sister refused to pay the 10/- or whatever
for repair as the manufacturer reckoned the blanket had been rucked, which
was denied by my sister. Mother saw the chance of cheap blanket and took it.
--
B Thumbs
Change lycos to yahoo to reply
Nightjar
You might like to check the rating again. Although these days black is
used for ratings other than 3A and 13A, the original system was:
2A - Blue
3A - Red
5A - Grey
10A - Yellow
13A - Brown
Colin Bignell
Tony Bryer
> You might like to check the rating again. Although these days black is
> used for ratings other than 3A and 13A, the original system was:
>
> 2A - Blue
> 3A - Red
> 5A - Grey
> 10A - Yellow
> 13A - Brown
IIRC there were also 7A fuses. I suspect that in those days 99% of
appliances had 13A fuses in the end user fitted plugs.
--
Tony Bryer, Greentram: 'Software to build on' Melbourne, Australia
www.superbeam.co.uk www.eurobeam.co.uk www.greentram.com
Nightjar
> On Wed, 05 Jan 2011 03:29:09 +0000 Nightjar<"cpb"@ wrote :
>> You might like to check the rating again. Although these days black is
>> used for ratings other than 3A and 13A, the original system was:
>>
>> 2A - Blue
>> 3A - Red
>> 5A - Grey
>> 10A - Yellow
>> 13A - Brown
>
> IIRC there were also 7A fuses. I suspect that in those days 99% of
> appliances had 13A fuses in the end user fitted plugs.
>
Both 1A and 7A fuses are permitted, but I don't recall the old colours.
I don't know if I have even seen a 1A rated BS1362 fuse.
I think the original idea was that the fuse was there to protect the
equipment, while it later became accepted that all but the simplest
equipment should contain its own over current protection, so the fuse
only needed to protect the cable. Hence it was possible to simplify to
3A for things like lamps and 13A for everything else.
Colin Bignell
PeterC
All of my fuses, apart from some 13A (whay I keep those I don't know - a
feww, OK, but about 30?) are form the 'good' old days of Plessey.
I have 2, 3, 5, 7 and 10, then a few 1A that are BS1362. The other oddity is
a 3A, BS1362, labelled 'Alert', that is blue!
I use the 1A in soldering irons - still OTT for 10 - 25W but if there's
going to be a dead short a few inches from my face...!
--
Peter.
The gods will stay away
whilst religions hold sway
js.b1
> You might like to check the rating again. Although these days black is
> used for ratings other than 3A and 13A, the original system was:
Snip.
Strange, here is a picture of the fuse.
It is turquoise and 3A very clearly http://i55.tinypic.com/24wyjqo.jpg
I wonder if YF refers to "Fast" hence the colour of 2A Blue. Dunno.
Tabby
> On Jan 5, 3:29 am, "Nightjar <\"cpb\"@" <"insertmysurnamehere> wrote:
>
> > You might like to check the rating again. Although these days black is
> > used for ratings other than 3A and 13A, the original system was:
>
> Snip.
>
> Strange, here is a picture of the fuse.
>
> I wonder if YF refers to "Fast" hence the colour of 2A Blue. Dunno.
can we use the pic on the wiki?
NT
Andrew Gabriel
"Nightjar <\"cpb\"@" <"insertmysurnamehere> writes:
> On 05/01/2011 03:34, Tony Bryer wrote:
>> On Wed, 05 Jan 2011 03:29:09 +0000 Nightjar<"cpb"@ wrote :
>>> You might like to check the rating again. Although these days black is
>>> used for ratings other than 3A and 13A, the original system was:
>>>
>>> 2A - Blue
>>> 3A - Red
>>> 5A - Grey
>>> 10A - Yellow
>>> 13A - Brown
>>
>> IIRC there were also 7A fuses. I suspect that in those days 99% of
>> appliances had 13A fuses in the end user fitted plugs.
>>
>
> Both 1A and 7A fuses are permitted, but I don't recall the old colours.
> I don't know if I have even seen a 1A rated BS1362 fuse.
1A exist, but are not ASTA approved, which is a PAT test failure
in a BS1363 plug. 7A exist.
> I think the original idea was that the fuse was there to protect the
> equipment, while it later became accepted that all but the simplest
> equipment should contain its own over current protection, so the fuse
> only needed to protect the cable. Hence it was possible to simplify to
> 3A for things like lamps and 13A for everything else.
The fuse was always to protect the flex.
All current products have to be safe when moved around the EU, where
they can be protected at 16A (or maybe 20A, can't recall now). That
means all current UK products have to be safe with a 13A fuse, and
in theory no other value is required, except for older products with
longer leads than are permitted nowadays (and extention leads, which
would never be allowed if someone tried inventing them today).
--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]
js.b1
> can we use the pic on the wiki?
Sure, no worries.
Grimly Curmudgeon
drugs began to take hold. I remember "Nightjar <\"cpb\"@"
<"insertmysurnamehere> saying something like:
>2A - Blue
>3A - Red
>5A - Grey
>10A - Yellow
>13A - Brown
I only recall 5A being black.
The Other Mike
(Andrew Gabriel) wrote:
>1A exist, but are not ASTA approved, which is a PAT test failure
>in a BS1363 plug.
This seems to indicate that all values are ASTA approved
http://www.farnell.com/datasheets/10867.pdf
another source, this time a Chinese manufacturer :)
ASTA approved at 1A but not BSI approved...
http://www.gtlsem.com/bs1362.html
--
Andy Wade
> On 04/01/2011 14:43, js.b1 wrote:
>
> You might like to check the rating again.
No, 3A was definitely blue in the 1960s, IME. I think the change to red
took place in the 1970s. Perhaps it was when the flex colour code
changed from red/black/green - not sensible to have a blue (neutral)
coded item in the line conductor.
> the original system was:
>
> 2A - Blue
> 3A - Red
> 5A - Grey
> 10A - Yellow
> 13A - Brown
Original, as in 1947? Like others I've never seen colours other then
blue, red, brown and black, and I've never seen blue being anything
other than 3 amp.
--
Andy