I've been moving some images around on ECN's server, and found some from older threads that I thought are worth posting again for the benefit of newer ECN members who might have missed them first time round.
This distribution panel is one that I haven't forgotten in a hurry. With all the branch breakers turned off, there was still power throughout the house. Not surprising when I saw how the panel had been wired:
The only OCPD for every circuit, including the tiny 1 sq. mm lighting branches was the main PoCo fuse.
Paul, I remember this one!. That busbar at the bottom of the breakers looks a little dangerous, I don't think I'd like to work on this unit live. What sort of current rating does it have?.(the busbar) Also, are them meter tails double insulated?, you'd think that there would be some cable sheathing over them as they come into the unit, although its only plastic that its going through. That's a good idea having colour coded toggles on the breakers!. One thing I hate about units like this is, although they are nice and compact, they often don't have adequate space for wiring and to get your fingers into, should the need arise!.
[This message has been edited by Trumpy (edited 05-24-2003).]
#137063 - 05/26/0303:13 PMRe: Who needs Circuit breakers anyway?
The unit is the typical domestic panel rated for 100A maximum. The main on the right is purely a double-pole switch, not a circuit breaker (this model will take a main RCD in place of the switch, if required, but in this house there was an older ELCB mounted separately).
These Wylex panels do actually have a plastic protective cover which fits into those black plastic clips and covers the live busbar assembly. I can't remember whether I'd already removed it before taking these photos or whether the cover was missing.
The tails were double-insulated, as I recall. These days, the norm is for both cables to have an outer gray sheath over the red and black, but at one time these were made with the outer sheath matching the color of the inner insulation. (The other combination, still found sometimes in older installations, had a brown outer sheath on both.)
The lack of working space is one of my main criticisms of many British electrical accessories.
[This message has been edited by pauluk (edited 05-26-2003).]
#137064 - 05/26/0306:21 PMRe: Who needs Circuit breakers anyway?
No problem. It's been a while since the different grounding methods used on this side of the Big Pond have been discussed, so it might be worth re-posting a brief outline of our different systems with links to the diagrams.
#137068 - 05/30/0302:40 PMRe: Who needs Circuit breakers anyway?