Hi does anyone know the type of the Federal “brown” 3871 breakers? The 3 poles have type 4 on them but nothing on the single poles? If they were type 4 the max zs of most circuits wont comply following our EICR.
Many thanks
Many thanks
Discuss Federal 3871 “type” required for EICR in the Talk Electrician area at ElectriciansForums.net
Brown toggle Type 4
Orange toggle Type 3
Green toggle Type 2
White toggle Type 1 (Very rare)
Orange toggle Type 3
Green toggle Type 2
White toggle Type 1 (Very rare)
You need to refer to manufacturers data for max Zs values.
does this help?
file:///C:/Users/tel/Downloads/Zesses-sheets.pdf
file:///C:/Users/tel/Downloads/Zesses-sheets.pdf
Impossible now as Federal Electric are no more. There are many internet Tables you can look at as per #6 but these can only be taken at face value. Merlin Gerin, Federal Electric, Square D and Dorman Smith were the most common producers and all quote variable maximum values of Zs so one Table does not cover all brands. Manufacturers Tables also quote 0.4sec and 5sec disconnection times. The attached fax came from Federal Electric many years ago, I have overwritten so it is legible.
![[ElectriciansForums.net] Federal 3871 “type” required for EICR](https://electricians.s3.eu-west-1.amazonaws.com/data/attachments/33/33578-3b5e457b35cc96578bfa2d9d818aa72b.jpg "[ElectriciansForums.net] Federal 3871 “type” required for EICR")
Out of boredom this is from Dorman Smith.![[ElectriciansForums.net] Federal 3871 “type” required for EICR](https://electricians.s3.eu-west-1.amazonaws.com/data/attachments/33/33579-110a6be43687d0238135dc490ca5a0ea.jpg "[ElectriciansForums.net] Federal 3871 “type” required for EICR")
Cant open it :-(
Thats brill thank you very much for taking the time to assist!
I must warn you that sheet is 25 odd years old but it is from the horses mouth.
In other words, good enough! You have helped a fellow Northamptonian out good man.
T
Toneyz
Don't forget that all the max Zs was adjusted in past editions of BS7671 for 230v and Cmin so values may have to be adjusted.
As I said those Tables are 25 plus years old.
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