My prac in june consisted of a 3p board feeding a ring main, motor and a fused spur in fp200 and a sub main to a single phase db with rcd main breaker feeding two lighting circuits and another circuit s/o radial perhaps? The prac exam is less difficult than the prac at the end of the am2 i found it to be quite basic , but i did ask my boss to put me on testing before the exam so in all fairness i did have a headstart on mine but i think thisis how it went:
Safe iso- permission, knock off, lock off, cover off, prove tester, ten tests, prove tester, done(also do polarity while using testers all polarity checks and phase rotation)
Ze- remove earthing conductor 3 test each phase, replace earthing conductor immiediately!!! record highest
PFC-pefc + pscc, highest of six tests double and record
test bonding to water and gas pipes acceptable reading just tick confirm on sheet (supposed long lead but can reach with meter probes)
r1+r2 all circuits on 3p board link method at db etc, r2 test on motor circuit
three step ring test on ring circuit etc
r1+r2 all circuits on single phase db link method etc proven polarity on all circuits tick boxes
Ir test on 3phase db TURNING OFF RCD FOR SUB MAIN CIRCUIT ten tests, record
Ir test on sphase db AFTER REMOVING DIMMER SWITCH or any sensitive equipment , record
Permission to energise after all covers replaced
Zs all circuits record highest on each circuit
rcd test on sub main rcd breaker functional tests then happy days just fill out sheets to fin off i have all my notes from my 2391 prac and theory so if anyone needs info give me a shout ill dig them out before it all changes of course
almost forgot insulation resistance fault rig i had to test two faults simple all mcbs on locate which conductors the fault is between and the find which circuit it is on by elimination method to find the circuit either turning off mcbs or removing neutrals etc just record the fault dead short low resistance etc
live test rig earth loop on two test will be given mock fuse types and sizes for test have to either locate fault on tester or check with books to see if zs is of acceptable value for the fuze type/size etc and i think thats it
forgot the visual inspection rig also got to loacate 12 faults on a mock rig and record them no tests only visual inpection no grommet protection ,1p2x/ip4x faults incorrect mcb ratings cable sizes etc also very simple
not sure if the test rig is the same around britain but maybe?