Test the earth electrode resistance.Basic Electrical Installation Work
350
● choice and setting protective devices
● labelling circuits, fuses, switches and terminals
● selection equipment and protective measures appropriate to
external influences
● adequate access switchgear and equipment
● presence danger notices and other warning notices
● presence diagrams, instruction and similar information
● appropriate erection method.1).
With the supply connected
6. Carry out functional testing (e.
8. Test for continuity protective conductors, including protective
equipotential and supplementary bonding.
3.
4.
2.
Safety First
Working live
● Never work‘live’
● Some‘live testing’is allowed by
competent persons
● Otherwise, isolate and secure the
isolation
● Prove the supply‘dead’before
starting work. Test for polarity using the continuity method.
If any test fails comply with the Regulations, then all the preceding tests
must repeated after the fault has been rectified. Test the earth fault loop impedance.
The checklist guide, not exhaustive detailed, and should used
to identify relevant items for inspection, which can then expanded
upon. This because the ear-
lier test results may have been influenced the fault (Regulation 612. Test the continuity all ring final circuit conductors. For example, the first item the checklist, connection conduc-
tors, might further expanded include the following:
● Are connections secure?
● Are connections correct? (conductor identification)
● the cable adequately supported that strain placed the
connections?
● Does the outer sheath enter the accessory?
● the insulation undamaged?
● Does the insulation proceed but not into the connection?
This repeated for each appropriate item the checklist.
.
7. Recheck polarity using voltmeter approved test lamp. operation RCDs).
Those tests which are relevant the installation must then carried out
in the sequence given Regulation 612.
5. Test for insulation resistance. These tests are follows:
Before the supply connected
1.1 and the Site Guide for rea-
sons safety and accuracy.g
