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Default RCD for electric blanket

The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Thoughts?

--
AnthonyL
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Default RCD for electric blanket

AnthonyL wrote:
The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Thoughts?


Just keep paying the life insurance?!
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Default RCD for electric blanket

In article , AnthonyL
writes
The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Can't do any harm but be aware that the adaptor type products are IME
more prone to false trips when left on for extended periods
(weeks/months) than ones designed for consumer unit use so a trip may
not necessarily indicate a fault in the blanket.

--
fred
it's a ba-na-na . . . .
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Default RCD for electric blanket



wrote in message
...
On Saturday, February 14, 2015 at 7:59:30 PM UTC, AnthonyL wrote:
On Sat, 14 Feb 2015 15:58:21 +0000, Graham. wrote:

On Sat, 14 Feb 2015 13:38:52 GMT, lid (AnthonyL)
wrote:

The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Thoughts?

You don't say if the circuit it's plugged into is already RCD
protected.
If it is, you won't really gain anything and there probebly wont even
be any discrimination, ie the CU RCD will trip as well.


Well I'm not sure if I've got an RCD. I've taken photos of a breaker
that sits between the meter (wires into top) and the main fuse box
(wires out the bottom). Had to mess around with a mirror to get the
circuit diagram but I can't see any description, make etc.

https://www.flickr.com/photos/790182...7650400040769/

Is there a reasonably safe way to check if it is an RCD (short live to
earth on a 3 pin?)


That's an ELCB, which won't offer any shock protection. I'd always use an
RCD with an electric blanket. They kill more people than all other
domestic appliances combined


How many do they in fact kill and how
many of those have stuff like pacemakers ?

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Default RCD for electric blanket

In message , AnthonyL
writes
On Sat, 14 Feb 2015 15:58:21 +0000, Graham. wrote:

On Sat, 14 Feb 2015 13:38:52 GMT, lid (AnthonyL)
wrote:

The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Thoughts?


You don't say if the circuit it's plugged into is already RCD
protected.
If it is, you won't really gain anything and there probebly wont even
be any discrimination, ie the CU RCD will trip as well.


Well I'm not sure if I've got an RCD. I've taken photos of a breaker
that sits between the meter (wires into top) and the main fuse box
(wires out the bottom). Had to mess around with a mirror to get the
circuit diagram but I can't see any description, make etc.

https://www.flickr.com/photos/790182...7650400040769/

Is there a reasonably safe way to check if it is an RCD (short live to
earth on a 3 pin?)


That looks like an old voltage operated ELCB (earth leakage circuit
breaker), we used to have one like it. Used in our house anyway to give
whole house protection in the event of a voltage flowing to earth (TT
earthing)

Not that ours ever tripped. even when by B-I-L got a shock due to a
live/earth fault.

AIUI Doesn't really give the protection of an RCD to individual devices
or circuits

(ours since replaced with a time delayed RCD


--
Chris French

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Default RCD for electric blanket

On Sat, 14 Feb 2015 20:38:09 +0000, Chris French
wrote:

In message , AnthonyL
writes
On Sat, 14 Feb 2015 15:58:21 +0000, Graham. wrote:

On Sat, 14 Feb 2015 13:38:52 GMT, lid (AnthonyL)
wrote:

The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Thoughts?

You don't say if the circuit it's plugged into is already RCD
protected.
If it is, you won't really gain anything and there probebly wont even
be any discrimination, ie the CU RCD will trip as well.


Well I'm not sure if I've got an RCD. I've taken photos of a breaker
that sits between the meter (wires into top) and the main fuse box
(wires out the bottom). Had to mess around with a mirror to get the
circuit diagram but I can't see any description, make etc.

https://www.flickr.com/photos/790182...7650400040769/

Is there a reasonably safe way to check if it is an RCD (short live to
earth on a 3 pin?)


That looks like an old voltage operated ELCB (earth leakage circuit
breaker), we used to have one like it. Used in our house anyway to give
whole house protection in the event of a voltage flowing to earth (TT
earthing)

Not that ours ever tripped. even when by B-I-L got a shock due to a
live/earth fault.


Oh - I thought that if the blanket shorted through a person that
should trigger it

AIUI Doesn't really give the protection of an RCD to individual devices
or circuits

(ours since replaced with a time delayed RCD


I presume it isn't a big job to replace it? But why a "time delayed"?

I'll buy an individual RCD anyway just to be safe, and probably a new
blanket.

--
AnthonyL


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Default RCD for electric blanket

On Saturday, February 14, 2015 at 9:08:13 PM UTC, AnthonyL wrote:
On Sat, 14 Feb 2015 20:38:09 +0000, Chris French
wrote:

In message , AnthonyL
writes
On Sat, 14 Feb 2015 15:58:21 +0000, Graham. wrote:

On Sat, 14 Feb 2015 13:38:52 GMT, lid (AnthonyL)
wrote:


https://www.flickr.com/photos/790182...7650400040769/

Is there a reasonably safe way to check if it is an RCD (short live to
earth on a 3 pin?)


That looks like an old voltage operated ELCB (earth leakage circuit
breaker), we used to have one like it. Used in our house anyway to give
whole house protection in the event of a voltage flowing to earth (TT
earthing)

Not that ours ever tripped. even when by B-I-L got a shock due to a
live/earth fault.


Oh - I thought that if the blanket shorted through a person that
should trigger it


You can fry in hell & an ELCB won't give a damn. RCDs care 50% of the time, when its a L-N fryup they don't either.

AIUI Doesn't really give the protection of an RCD to individual devices
or circuits

(ours since replaced with a time delayed RCD


I presume it isn't a big job to replace it? But why a "time delayed"?


No. So as you add RCDs further downline, those trip instead of the whole house going off.


NT
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Default RCD for electric blanket


"AnthonyL" wrote in message
...
On Sat, 14 Feb 2015 15:58:21 +0000, Graham. wrote:

On Sat, 14 Feb 2015 13:38:52 GMT, lid (AnthonyL)
wrote:

The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Thoughts?


You don't say if the circuit it's plugged into is already RCD
protected.
If it is, you won't really gain anything and there probebly wont even
be any discrimination, ie the CU RCD will trip as well.


Well I'm not sure if I've got an RCD. I've taken photos of a breaker
that sits between the meter (wires into top) and the main fuse box
(wires out the bottom). Had to mess around with a mirror to get the
circuit diagram but I can't see any description, make etc.

https://www.flickr.com/photos/790182...7650400040769/

Is there a reasonably safe way to check if it is an RCD (short live to
earth on a 3 pin?)


What you have is an obsolete voltage operated trip. (Predecessor to RCD)
It trips if 40V or more appears on the earth, or should do.

They were done away with because they can interact with a nieghbours similar
device. causing various problems

You really need to get rid of it and fit and RCD near the meter.
Forget about one for your blanket alone, there is no advantage.
Electrocution from blankets is virtually unheard of.

The danger from blankets is overheating and subsequent fire.
Even this is unusual nowadays.


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Default RCD for electric blanket

On 14/02/15 13:38, AnthonyL wrote:
The wife's underblanket is designed to be used all night if required.
It must be now 15yrs old. I regularly visually check it and there is
no fraying or sign of deterioration but I'm wondering if it would be
wise in any even to plug in via an RCD adapter.

Thoughts?


Why not?

However teh RCD is unlikely to help if the thing wants to catch fire
(assuming it is a Class II appliance)
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Default RCD for electric blanket

Another John i.e. I myself wrote:

If it's 15 years old I'd change it anyway: I have just done exactly that
myself, being a big, B-I-I-G fan of electric blankets (as I've said in
another thread recently, my wife gets way too hot, so I just have a
single, on my side of the bed).

I got this one:
http://www.johnlewis.com/dreamland-6...electric-under
blanket/p231270114


BLOODY HELL!! I've just noticed that that item is FIFTEEN POUNDS less
than I paid, in the store, one month ago!!!! Maybe they've reduced
them because we're coming out of winter?

John
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