Meter tails >3 metres in length

[andrew8902]

Why would you FI that?
What limitations during the inspection would lead you to believe that there could be potential for danger but a limitation on the inspection prevents you from finding out?
Then they quote the ESQCR ?

I had an email from Western Power Distribution and they are saying that it is not written in ESQCR but it is a requiremnt of BS7671......What a joke.....

 

[Rockingit]

This is a common misinterpretation / debate around 433.2.2 (ii) and basically my view has always been that so long as the csa of the cables involved are ≥ In then there's no issue. I think the purist view is that you shouldn't for example have tails to a Henley and then split from there.

 

[Wilko]

Ha ha, you couldn’t make it up really. If its desired from an operational standpoint (for some reason ?) that should just be stated and Us Simple Folks likely will comply with their wishes. But to say it’s required from a tech perspective invites scrutiny and feedback, in my view.

From my limited knowledge, 2 tech related reasons for discussion :

- loop impedance may become too large and 5 seconds disconnection may be lost with the installed cutout fuse. This is an easy On Site Electrician calculation, perhaps?

- position of devices for protection against overload or fault with 3m of a reduction in conductors cross sectional area (Regs 433.2.2ii and 434.2.1 apply). If I use 25mm tails I often feel they are equal or bigger than the incoming DNO cable conductors anyway. Again an On Site Electrician observation perhaps?

 

[Rockingit]

If I use 25mm tails I often feel they are equal or bigger than the incoming DNO cable conductors anyway. Again an On Site Electrician observation perhaps?

Commonly 16mm Alu splitcon around here (WPD) but I think it literally depends half the time on what's on the van!

 

[Ian1981]

It’s the Blind leading the blind, it’s in the ESQCR, no it’s in BS7671.