Installation instructions for mains wire-in protectors | 3/14
(ii) alternatively, if only one conductor needs to be longer
than 25 cm then use a pair of separated (as above)
conductors to make that connection.
See Figure 6
.
(iii) for metal distribution boards, if only the earth
connection needs to be longer than 25 cm, the following
procedure is suggested (
See Figure 5
):
(a) using 6 mm
2
cable make one connection from the ESP
unit to the earth bar.
b) a second short and direct connection, again using 6
mm
2
cable, should be taken from the ESP unit to the
metalwork of the distribution board.
(c) bond the earth bar to the metalwork of the
distribution board.
The techniques outlined above (i-iii) are designed to
minimise the inductance associated with the connecting
leads.
3.10 Bind connecting leads
Connecting leads should be tightly bound together using
Ty-Raps
®
, tape or spiral wrap. This should be done for the
entire length of the cable or as far as is possible.
See
Figure 11.
