Discuss Federal 3871 “type” required for EICR in the Industrial Electrician Talk area at ElectriciansForums.net
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.How easy will they be to find??
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.View attachment 42774
I must warn you that sheet is 25 odd years old but it is from the horses mouth.
As I said those Tables are 25 plus years old.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.
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
If that was true I would have thought they would have been forced to stop selling them and we would have had it all over the trade press.It’s worth bearing in mind that Federal Electric went under because they fraudulently falsified test results of their MCB’s. There never was a product recall because it was deemed too expensive and it was cheaper to settle any claims through the courts. So it might be prudent to get rid of the fire starters while you have the chance.
Reply to Federal 3871 “type” required for EICR in the Industrial Electrician Talk area at ElectriciansForums.net
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