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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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  • 0
    There is of course the issue of suitable products not being available. A couple of year ago I set about designing an electrical installation for a small rural church near Ross-on-Wye and spoke to Wylex about AFDD.


    The Wylex AFDD cannot be used in their three-phase distribution boards as they do not have guards to separate the phases on the base of them. The architects were insisting there had to be E7 storage heaters and three phase had to be available should catering equipment be installed at a later date in the vestry. I was heading in the direction of having two three-phase boards and six single-phase boards in a very small church and the cost of AFDD was very high, the architects were saying that of course AFDD would be required, but when costs were mentioned they didn't have the funds to pay for the simplest of installations and started talking about applying for Lottery funding.


    What's different now, anything? Are three-phase AFDD now available or single-phase AFDD that can be used in a three-phase distribution board?


    Andy Betteridge.
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  • 0
    There is of course the issue of suitable products not being available. A couple of year ago I set about designing an electrical installation for a small rural church near Ross-on-Wye and spoke to Wylex about AFDD.


    The Wylex AFDD cannot be used in their three-phase distribution boards as they do not have guards to separate the phases on the base of them. The architects were insisting there had to be E7 storage heaters and three phase had to be available should catering equipment be installed at a later date in the vestry. I was heading in the direction of having two three-phase boards and six single-phase boards in a very small church and the cost of AFDD was very high, the architects were saying that of course AFDD would be required, but when costs were mentioned they didn't have the funds to pay for the simplest of installations and started talking about applying for Lottery funding.


    What's different now, anything? Are three-phase AFDD now available or single-phase AFDD that can be used in a three-phase distribution board?


    Andy Betteridge.
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