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bluetobits

BS3871

Question

Does anyone know where in BRB the max Zs readings are for BS3871 mcb's?

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They're not in the BRB.

I did see something the other day with these on, I'll have a look

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This is the only thing that I can find..

For BS60898s

B 3 to 5 In

C 5 to 10 In

D 10 to 20 In

For BS3871s

1 - 2.7 to 4 In

2 - 4 to 7 In

3 - 7 to 10 In

4 - 10 to 50 In

HTH

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I think you will find they are in the On Site Guide or Guidance Notes 3 CJS

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They've been dropped from the regs as of 17th. they were in 16th if you have a copy.

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if you have a NICEIC cert book they are inside the front cover.

if you need them now let me know, otherwise I'll have a look tomorrow for you.

PM me if you need

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They've been dropped from the regs as of 17th. they were in 16th if you have a copy.

The 16th is based on 240 volts the 17th is 20 volts that is why the max Zs has changed therefore you need to max current In for type 1,2,3 or 4 (as in NozSparks post) by 230 to obtain the Zs:Salute

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