0.4/5 seconds.

[KNIPEX]

hi guys, just to confirm the max disconnection time for all equipment is now 0.4s to 17th edtion???

used to be 5 seconds for fixed equipment and 0.4 for portable.

but now the voltahe has been dropped i believe these new readings come into play.

however do these need to have rcbo to comply with these readings?

thanks

 

[Mr Mark Sparks]

all disconnection times are .4 except submains still5sec and is tt.2

 

[lister]

I asked the very same question to my elecsa inspector just two days ago- and no, fixed equiptment and lighting still 5 secs disconnection time, as for rcbo depends on where the circuit is, what it is and how its installed, so not always just 99% of the time in a domestic situation.

 

[Spudnik]

The times are still the same (except for TT) however the use of RCD's in most situations has brought on the 0.4s time.

 

[lister]

so when filling in test certs lets say immersion heater, what do you put for max allowed disconnection time ?

 

[Spudnik]

If its on an RCD then .4

 

[not clever]

You are all having a laugh surely?

I would (with the exception of Mr M Spark) suggest you all read the book you as electricians should have & possibly think of retraining?

All final circuits on TN systems with a rating not exceeding 32A have a disconnection time of 0.4s

Circuits exceeding 32A or distribution circuits can have a disconnection time of 5s

TT sytem 0.2s

Use of rcd / rcbo /rccb LOOK IN YOU BOOK you should know this any way.


I dispare

 

[Mr Mark Sparks]

thankyou for your support not cleaver
try not to get carried away with your opinions

to all
have a browse

http://www.eca.co.uk/17thEdition/17Edition_Presentation.pdf.pdf

 

[Spudnik]

You are all having a laugh surely?

I would (with the exception of Mr M Spark) suggest you all read the book you as electricians should have & possibly think of retraining?

All final circuits on TN systems with a rating not exceeding 32A have a disconnection time of 0.4s

Circuits exceeding 32A or distribution circuits can have a disconnection time of 5s

TT sytem 0.2s

Use of rcd / rcbo /rccb LOOK IN YOU BOOK you should know this any way.


I dispare

You are quite correct.

I admit i just scanned the posts.

No excuse but its been a loooooong day.

Im going to bed.

 

[ian.settle1]

You are quite correct.

I admit i just scanned the posts.

No excuse but its been a loooooong day.

Im going to bed.

As said above about a quick scan, I think we should read and inwardly digest before making any comments and if you have not done the 17th you should not really answer.