Meter Tails for new consumer unit

[BruceB]

Err, BRB uses dots.

Oh dear - a long day. You are quite right - red/brown blindness or something.

 

[BruceB]

Back to the essence of it:
- 537.1.4 has not changed between red and green
- nor has 537.2.2.6
- nor has the definition of electrical installation

so I would be interested to hear the inspector's justification for a changed interpretation

Regards
Bruce

 

[malcolmsanford]

I think the confusion is coming from the revised regulation 537.1.3 in the BGB. The IET have now added

"Where a distributor provides a means of disconnection complying with chapter 53 at the origin of the installation and agrees that it may be used as the means of isolation for the part of the installation between the origin and the main linked switch or circuit breaker required by regulation 537.1.4, the requirement for isolation and switching of that part of the installation is satisfied"

To me that is referring to either the main cut out fuse as a fuse is classed as a means of isolation (Table 53.4) or a switch isolator that is sometimes now fitted. So to my interpretation I think it clearly outlines that provided the DNO give permission to use their fuse/isolator as the main means of isolation it clears up the single point of isolation within a house, and the fitting of extra CU's

I think that is also why we have the note now added to 537.1.3 which states A cut out fuse may be withdrawn only by a person authorized to do so by the distributor.