On 18/11/2019 18:38, Tricky Dicky wrote:
That's what I thought when I was trying to invoke the get out clause but my BCO was not having it. There are three types of SPD the Surge Devices website does explain the difference and has a handy device selector. The one posted is the recommended one for domestic situations with underground cables for fitting into Domestic Distribution panels (CU). It does not protect against direct lighthning strikes as it does not need to, but does protect against other causes of surges that could damage delicate electronics. I meant to mention that at present Toolstation is the cheapest supplier I have found @ £44 but do not expect to find it in your local store only available online.

When I went to the ElexShow this year the CU manufactures were all
showing of their new CUs (obviously not MK) with SPDs built in at the
head end next to the main switch. I believe that they were all type 2
SPDs as I believe you can only use a type 1 with the additional
protection of a type 2 (for domestic properties). I should have taken
more notice, but I was actually there for info on the AFFDs.



--
Adam