Short circuit info

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JackTheCat

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• 28 May 2006

• #1

Hello all,
a bs 1361 fuse 100amps has a short circuit capacity of?
and were is this info available please?

I know mcbs are 6ka and rewirables are between 1ka and 4ka

 

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JackTheCat

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• 28 May 2006

• #2

A reply to myself, lol...think i found the info page 55 amicus brown book, it reckons 16.5kA to 33kA, what i need to know now is, what figure would you put in the PIR report form, soz to bore you fellas im filling in a niceic sample pir

 

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Adam_151

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• 28 May 2006

• #3

Type I is 16.5ka , type II is 33ka

BS1361 type II is I belive what is most often used in DNO cutouts

 

Spark123

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• 28 May 2006

• #4

Not all MCBs are 6kA, some are marked with their short circuit category as i.e. M3 is a 3kA breaker. Others have a figure printed on them in a box, such as 6000 is a 6kA and 10000 is a 10kA. This is in GN3 on P60.

 

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JackTheCat

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• 28 May 2006

• #5

Spark123
thanks for that info, got gn3 in front of me now

and adam