what about this one;
a consummer has acquired four antique cast iron lamp posts and has converted them to accomadate edison screw tungsten filament lamps and installed them at various points in the garden. a pir controlled tungsten halogen secuity light has also been installed on the side of the house. the post the post and security light have been supplied from a standard metal clad, one gang, one way grid switch externoally mounted.
The feeds to all the lights are 1mm pvc/pvc twin with cpc cable, clipped direct to the external brickwork and also laid in 25mm of sand under patio slabs to each post in the form of a radial circuit.. the metal switch is fed from a socket outlet circuit on the downstairs ring final circuit using 1.5mm pvc/pvc twin and earth cable which passes through the wall and is clipped with 1mm cable on their edges upto the switch. each edison screw lamp fitting together with a terminal block is mounted on a plastic base and secured in the head of each post, an inspection and test of this installation is to be carried out;
state for this installation
a, the types of verification that would need to be undertaken? periodic verification and initial verification
b,the status of the peron carrying out the verification? competant person
c, the documentation that would need completing? minor works certificate, electrical condition report with schedlue of inspections and schedule of test results
d, the legislation that would apply? electricity at work regulations
e, three items from bs7671 or gn3 check list that would need to be considered? routing of cables, cable selection, verification of polarity
List six departures from bs7671 that should be revealed during the inspection preocess, lamps not to bs standard as he converted, metal clad switch ( ip codes), cables cliped on there edges,, the 1.5mm cable aint fused
State where departures should be recorded on ? minor electrical installation works certificate
list the
a, relevent instruments tests in the correct sequence to be carried out on this new installation; DEAD TESTS continuity of protective conductors, continuity of ring final circuit conductors, insulation resistance, polarity, Live tests earth fault loop impedance, functional testing including rcd testing and voltage drop
b, instruments to be used for each of the above tests?
low resistance ohmmeter
insulation resistance ohmmeter id say high range ohmmeter
earth fault loop impedance tester
rcd tester
