Amendment 2 and AFDD's

[Dave Appleby]

Hi.

Been reading the but around 427.1.7.

Does anyone have any idea on retrospective application?

Is this going to apply to every board change or just adapted to new builds and then as a C3 recommendation for everything else?

Given prices it's going to be a massive cost change on a board swop. Plus, I know for certain I'm going to have space issues with anything over 30 years old here in Fife.

Thoughts?

 

[Dustydazzler]

Until the make a single module arc fault breaker that can retro fit most boards and costs less than £50 a pop then they are a non starter imo

 

[Dave Appleby]

Until the make a single module arc fault breaker that can retro fit most boards and costs less than £50 a pop then they are a non starter imo

Pretty much my thoughts exactly.

However, the wording is SO ambiguous as to be virtually meaningless

 

[Vortigern]

My 18th edition only goes up to 424, errm.....

 

[Dave Appleby]

My 18th edition only goes up to 424, errm.....

Yes yes. 421!!!?

 

[UNG]

Until the make a single module arc fault breaker that can retro fit most boards and costs less than £50 a pop then they are a non starter imo

I was thinking more like £30

 

[IAmSparkytus!]

Regulation 421.1.7 has been redrafted. It is now a requirement (rather than a recommendation) to protect final circuits supplying socket-outlets and fixed current-using equipment with a rated current not exceeding 32 A by arc fault detection devices (AFDDs).

So the majority of circuits basically?

I've never looked at AFDDs before.

Do they have built in overload and RCD protection or are they an additional device?

Are they one device per consumer unit or one per circuit?

 

[nicebutdim]

Regulation 421.1.7 has been redrafted. It is now a requirement (rather than a recommendation) to protect final circuits supplying socket-outlets and fixed current-using equipment with a rated current not exceeding 32 A by arc fault detection devices (AFDDs).

So the majority of circuits basically?

I've never looked at AFDDs before.

Do they have built in overload and RCD protection or are they an additional device?

Are they one device per consumer unit or one per circuit?

Those that I've seen (Crabtree & Wylex) are single module RCBOs, with AFDD incorporated.

 

[Doomed]

Regulation 421.1.7 has been redrafted. It is now a requirement (rather than a recommendation) to protect final circuits supplying socket-outlets and fixed current-using equipment with a rated current not exceeding 32 A by arc fault detection devices (AFDDs).

So the majority of circuits basically?

I've never looked at AFDDs before.

Do they have built in overload and RCD protection or are they an additional device?

Are they one device per consumer unit or one per circuit?

MCB/RCD/AFDD combination, one per circuit, like a RCBO on steroids

 

[pc1966]

MCB/RCD/AFDD combination, one per circuit, like a RCBO on steroids

And a price tag to match:

Consumer Units: Fuse Boxes & Fuse Boards

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For comparison, the Wylex RCBOs:

Consumer Units: Fuse Boxes & Fuse Boards

Explore our range of consumer units. NO MINIMUM ORDER, money back guarantee, FREE delivery over £50 ex VAT, 5⭐ reviews. Order fuse boxes & fuse boards here✅

www.discount-electrical.co.uk