Shakey

Ok,

the PIR board is always a full inspection. So, as you found out that means ALL covers off (except the trunking!) The 10 percent is sampling, which you can do in the real world depending on the condition of the installation, but not in the exam.

You have 120 miniuts which terminates when you hand in your completed PIR, although the examiner does have a bit of tolerence with the time.

The tests are in order as stated in GN3. So its

Continuity (bonding and CPC's) so your R1+R2's and your ring tests
Insulation
Polarity
EFLI's
RCD,s and functionals

your EFLI's wil include Ze,
PEFC and PSCC (on both the main AND sub boards)
and your Zs' measurements

These can be done in any order, but i would generally go Ze, recconect the earth then straight into PEFC, then PSCC.

Note that you DONT have to mesure Zs on all the circuits, just the socket outlets on the ring, and socket outlet on the radial off the sub board. In accordance with the EAWR's, C&G state on all of the other circuits you can measure OR calculate Zs. So you have Ze, and R1+R2, so save time and calculate!

As a rough guide to timing, you should aim to complete your visuals, refit covers, and be nulling you meter for the bonding tests at around the 30 minuite point. Take one hour to do your tests, then aim to start your report with about 20-30 minuites to go

And remember:

No matter what, NEVER EVER switch on the main isolator on the three phase board with the busbar cover removed - this is an instant fail!!!!



hope this helps