Table 41.3 18th edition

[Zdb]

Anyone got the updated maximum Zs values that they'd like to share?

 

[Leesparkykent]

Anyone got the updated maximum Zs values that they'd like to share?

I wasn't aware they've changed.... What's the reason behind the change?

 

[Strima]

They haven't changed, or I've got a dodgy copy.

 

[westward10]

My Chinese copy have all Zs values above 100 ohm.

 

[Ian1981]

Anyone got the updated maximum Zs values that they'd like to share?

Not changed

 

[Zdb]

That makes a change!

 

[Dannyg8810]

Not changed

Saves changing all the values in the MFT

 

[tudore]

They have changed! I've just been doing the NICEIC practise questions for 18th Edition, using my 3rd Ammendment of the regs: going fine till Zs vales - all the possible answers were different from any of the figures in my book. I've found a useful guide you can print off giving the new values: https://www.niceic.com/Niceic.com/media/Pocket-Guides/Pocket-Guide-18.pdf

 

[Leesparkykent]

They have changed! I've just been doing the NICEIC practise questions for 18th Edition, using my 3rd Ammendment of the regs: going fine till Zs vales - all the possible answers were different from any of the figures in my book. I've found a useful guide you can print off giving the new values: https://www.niceic.com/Niceic.com/media/Pocket-Guides/Pocket-Guide-18.pdf

Erm that’s an old table, that’s why it’s green. Max Zs value for the 18th haven’t changed from the BYB which introduced Cmin.

 

[Strima]

They have changed! I've just been doing the NICEIC practise questions for 18th Edition, using my 3rd Ammendment of the regs: going fine till Zs vales - all the possible answers were different from any of the figures in my book. I've found a useful guide you can print off giving the new values: https://www.niceic.com/Niceic.com/media/Pocket-Guides/Pocket-Guide-18.pdf

Those are not new values and they have had the 80% applied for thermal correction.

The last time Zs changed was in 2015 for the third amendment where Cmin was brought in.

 

[ackbarthestar]

They have changed! I've just been doing the NICEIC practise questions for 18th Edition, using my 3rd Ammendment of the regs: going fine till Zs vales - all the possible answers were different from any of the figures in my book. I've found a useful guide you can print off giving the new values: https://www.niceic.com/Niceic.com/media/Pocket-Guides/Pocket-Guide-18.pdf

B32A MCB Zs max = 1.08 Ohms is incorrect should be 1.09 Ohms. But then that's NICEIC

 

[tudore]

Erm that’s an old table, that’s why it’s green. Max Zs value for the 18th haven’t changed from the BYB which introduced Cmin.

I should've gone to Specsavers! The big "18" in the corner fooled me!