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Topic Title: BS 13A Socket-outlet Temperature rise test procedure BS1363-2
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Created On: 31 August 2013 08:27 AM
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 31 August 2013 08:27 AM
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mahanteshholagi

Posts: 4
Joined: 31 August 2013

I would like to understand the BS 13A Temperature rise test procedure according to BS1363-2 for 1-gang and 2-gang socket outlets.

Can you one help me to understand with help of circuit diagram and test current loading.

Thanks and Regards
mahantesh.holagi@electric-house.com
 31 August 2013 09:10 AM
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perspicacious

Posts: 7244
Joined: 18 April 2006

Welcome

Doesn't it show the circuit diagram and test current loading in the British Standard?

Regards

BOD
 31 August 2013 09:20 AM
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mahanteshholagi

Posts: 4
Joined: 31 August 2013

Hi Bod,

There is no circuit diagram in the standard. but the current loading is mentioned as below

for 1-gang socket total load = 20A i.e 1x14 (plug with connected loads) + 6 (balance load). I am not able to understand the connections.

Please suggest.

Regards
Mahantesh
 31 August 2013 12:04 PM
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sparkiemike

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For testing the total load is 20A, so for a socket with 2 outlets, one outlet will have a load of 14A for testing and the other outlet will have a load of 6A, (14A+6A=20A)

If you read below table 5 it will say that the socket is subjected to the loading in table 5 for 4-hours or longer with a max of 8-hours until stability is reached, stability being take as less then 1 K rise in temperature within 1-hour.
 31 August 2013 07:03 PM
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mahanteshholagi

Posts: 4
Joined: 31 August 2013

I understood the testing of socket with 2 outlets.

How about testing of single socket outlet. There also it is mentioned that....
Total Load: 20A
Plug connected load: 14A
Balance load : 6A

Please help me to understand the connection for single socket outlet.

Thanks
 31 August 2013 09:13 PM
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aligarjon

Posts: 2869
Joined: 09 September 2005

would you not struggle to connect anything more than 13amps to a single socket for any period of time even if it is rated at 20 amps ?

Gary

-------------------------
Specialised Subject. The Bleedin Obvious. John Cleese
 01 September 2013 07:04 AM
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ebee

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I take the terms "plug connected load" & "balance load" to infer that

1/ in case of a twin socket then the plug load is 14A and on one side and the other side could be also a plugged in 6A load.

ie the terminals take 20A total with one outlet taking 14A and the other (the balance) taking 6A.

2/ with a single socket then its plugged load is 14A and the 6A balance load could be for instance taken from a downstream socket drawing 6A.

ie the terminals of the first socket are running 20A wheras the socket itself is drawing 14A.

Of course I could be completely barking mad!

-------------------------
Regards,
Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
 01 September 2013 01:19 PM
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mahanteshholagi

Posts: 4
Joined: 31 August 2013

MR. Ebee,

I hope you are correct here.

Like the One terminal may like (L) of the single socket terminal will carry 20A current but whereas the socket contacts and the plug carry only 14A. So by this other end terminal (N) of socket will leave 14A.

Thanks for your comments
 03 October 2013 08:35 AM
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peterhoward

Posts: 13
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The temperature rise test procedure is specified in clause 16 and involves taking temperature readings on a socket outlet at the terminals, at the outside surface and the test area ambient. The temperatures are read hourly for 4 hrs min, 8 hrs max - stability (ie end of test) is considered to be when there is less than 1K (degrees K = degrees C) difference between succesive hourly readings. The ambient reading at stability is subtracted from the terminal and outside surface readings to give temperature rise figures and these must be less than 52K.

The sockets are wired with incoming and outgoing cables in the terminals as per a ring main. The current load for a 1 gang socket is 20A total, split into 14A out through the 13A plug and 6A through the outgoing cable at the terminal; the incoming cable carries the 20A total. For a 2 gang socket, the incoming cable still carries 20A but this is split as 14A through one 13A plug and 6A through the other.

The plugs used for testing are special test plugs specified in Annex G with heater resistors inside supplied from low voltage DC and calibrated to give a specified internal temperature inside the plug. Normal 13A plugs are not used.

Hope this explains the test to you; feel free to come back with any queries.

Regards, Peter Howard
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