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AFDDs AMD 2

John Peckham
In response to the suggestion of separate threads for individual changes to the 18th I thought I would start this one for AFDDs.


So what are the forum members views on the new requirement for AFDDs?


What is the safety case for the change? E.g impact on public safety, fires etc.Evidence?


What is the impact on the installation industry? How easy to fit, cost advantages disadvantages etc?


Will you feedback to the BSI on the changes and what will you say?


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    davezawadi (David Stone):

    Imagine one needed a new engine in a car because a new timing belt was needed and we had this type testing nonsense in place. 


    More like specifying a new minimum diameter for tyres. If you are really lucky, you already have them in that size; but otherwise either you need to replace all four on one go, or worst case is buy a whole new car.


    If a new circuit has to have AFDD, and if the device has to live in the CU, but won't fit, there is an element of the retrospective about this proposal. However, do they have to go in the CU, or could they be put in a separate enclosure? (I realize that if all AFDDs are combined with an MCB, the MCB will be doubled-up.)


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  • 0
    davezawadi (David Stone):

    Imagine one needed a new engine in a car because a new timing belt was needed and we had this type testing nonsense in place. 


    More like specifying a new minimum diameter for tyres. If you are really lucky, you already have them in that size; but otherwise either you need to replace all four on one go, or worst case is buy a whole new car.


    If a new circuit has to have AFDD, and if the device has to live in the CU, but won't fit, there is an element of the retrospective about this proposal. However, do they have to go in the CU, or could they be put in a separate enclosure? (I realize that if all AFDDs are combined with an MCB, the MCB will be doubled-up.)


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