Raymond,
Welcome to ECN, mate!. [Linked Image]
Yeah I agree with your comments on the pillar box fusing tripping before any of the installation fusing.
It's good to see MCB protection in houses these days, especially considering that the bulk of our Mains fusing is now HRC.
As a Faultsman, being called out because somebody blew thier pole fuse through over- current and the house fusing never tripped, is a tad worrying and annoying too. [Linked Image]