Federal 3871 “type” required for EICR

[westward10]

They already don’t meet the maximum earth loop impedance allowed and under the 18th Edition will do so even less. He could also just note the safety implications in the recommendation section of the E.I.C.R. and let the client make up their own mind. It’s all about risk management. I personally have never seen a Federal Electric breaker burned out above 32A. They seem to fair better at higher ratings.

I don't understand they don't meet maximum efli values.

 

[Kamikaze]

My apologies, poor wording on my part. In the opening post the OP stated that most of his circuits were over the max zs threshold on the type 4 breakers. I also don’t know why they are still for sale. Maybe they solved the problem with the breakers but the damage to their reputation was still done.

 

[westward10]

Not sure why he stated this as he had no idea what to compare the values to. But I agree they are nasty devices.

 

[socket2me]

Based on calculations for a type 4 but seemed extremely low and meant everything failed.

 

[socket2me]

50xIN calculation that is...

 

[westward10]

Well your values must have been well below those on the Federal sheet I posted.

 

[Toneyz]

Was there not the tables in the regs books in the 15th or before for max Zs for BS3871 circuit breakers?

 

[westward10]

Was there not the tables in the regs books in the 15th or before for max Zs for BS3871 circuit breakers?

No they have never been listed due to their variable characteristics.

 

[socket2me]

Ind

Well your values must have been well below those on the Federal sheet I posted.

Indeed they were!

 

[Toneyz]

No they have never been listed due to their variable characteristics.

Is that all BS3871 MCB's or just the Federal ones?

 

[westward10]

Is that all BS3871 MCB's or just the Federal ones?

All BS3871 Type 4 devices. Type 1, 2 and 3 were always included until superseded by EN60898.

 

[Toneyz]

All BS3871 Type 4 devices. Type 1, 2 and 3 were always included until superseded by EN60898.

Thanks for enlightening me on that westward as I was thinking to myself there are tables that include max Zs for BS3871 devices but does not include type 4.