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AFDDs NEW REGULATION IN AMD 2

John Peckham

As you may be aware amendment 2 to the 18th Edition was published in the early hours of this morning. If you have the access to the IET Digital package you may have already seen this change.

The new regulation is.

Arc fault detection devices (AFDD) conforming to BS EN 6206 shall be provided for single phase AC circuits supplying socket outlets with a rated current not exceeding 32A in.

High Rise Residential Buildings (HRRB)

Houses in Multiple Occupation (HMOs.

Purpose built student accommodation.

Care homes.

For all other premises, the use of AFDDs is recommended for circuits supplying sockets not exceeding 32A.

So we will not be seeing consumer units full of AFDDs if at all in ordinary domestic premises.

Lights blue touch paper and retires.

JP

Parents

  • Curious that the recommendation has changed from final circuits in general to just those supplying sockets.

    Is that an admission that arc between copper conductors of fixed wiring aren't detectable and the benefits only really apply to appliances?

    Does that open the door to socket mounted AFDDs (like they have in the US)? I can see some value in that if protection is required but its not desireable to loose an entire circuit just due to one faulty appliance.

       - Andy.

Reply

  • Curious that the recommendation has changed from final circuits in general to just those supplying sockets.

    Is that an admission that arc between copper conductors of fixed wiring aren't detectable and the benefits only really apply to appliances?

    Does that open the door to socket mounted AFDDs (like they have in the US)? I can see some value in that if protection is required but its not desireable to loose an entire circuit just due to one faulty appliance.

       - Andy.

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