Electric Wiring, 3rd Edition

174 Inspection and testing

Checks that fuses, circuit-breakers

etc. are

connected

in the

phase

conductor can readily be made by means of the test lamp at the consumer unit

or other points as necessary.

Earth fault loop impedance (EFLI)

These tests are

of

the actual path taken by the current during an earth fault.

This path

is

known as the 'earth fault loop' and the composition

of

this has

been described in Chapter 10, Page 156.

Before

the

tests

are

made

it is

necessary

to

establish

the

maximum

permissible values of EFLI for the outlets concerned. As indicated in Chapter

10

of

this

book, these can be obtained from the IEE Regulations. If th