John said:
Thanks to all for the replies.
So, here's a few hypothetical questions. I have been renovating my own
home for 3 years now - who's to say which of the rewiring I did before
Jan 2005, and which after? Do I need to get the stuff I've already done
certified?
I tend to be somwhat sporadic with my home improvements. Lets say I
wired a new ring-main one month, then an outdoor lighting circuit three
months later, would I have to get both certified individually, or can I
get everything done in say, a year when I've completed everything?
What if the certifier doesn't like something I've done, do I have to
correct any problems then pay again for re-certification?
AFAIK, you can do the work as and when you please - you send the plans
in before starting and get one installation inspection before you put
power on it. So you wouldn't need individual certificates unless you
wanted to put power on them individually.
As to failing to pass inspection - it doesn't even bear thinking about.
The wiring regs are hardly rocket science and nothing is going to be
failed on a whim - the failure will be cross-referenced to the wiring
code rule being violated. If you think about them as minimum standards
then you aren't going to get a failure. Assuming, of course, that the
local authority building code inspector actually is competent.
A few simple tests will show whether the rings are complete and what is
on the rings and what is on spurs. If that all passes ok, I would
expect just the odd box here and there to be opened and checked out -
plus a pretty good look at the earth bonding at the board and in the
kitchen and bathrooms. If you want to get something approved that isn't
compliant with the code, you can seek approval for non-compliance before
doing the work.
As to ongoing work -I suspect most people will claim that it was
finished prior to 2005. After that, any work you get certified will
specify the wiring that is being certified - so, if you add a shower
heater, the certificate will cover the shower heater circuit back to the
supply and not any other circuits in the house. If you add a spur to an
existing ring, the ring will be tested as well as the spur - but only in
so far as it affects the safety or compliance of the spur.
It will help if you have complete wiring plans for your house,
identifying every component. There is an amazing number of people out
there who have no idea of how many sockets/lights/ they have on each
ring and have added spurs hither and there without even considering that
their spurs now have more outlets than the ring....all unfused, of course..
Those are my readings of the tea leaves....