ERICO TDS-DINLINE Surge Suppressor - Manual (Page 15)

PAGE 15
11. ISOLATION AND FUSING
Overcurrent and short circuit protection must
be provided to protect the Surge Suppressor
and associated wiring if a fault develops. The
overcurrent protection should be installed in
such a manner to also provide a means of
isolating the TDS-DINLINE module from the
mains supply. This is an important safety
consideration and is required in the event that
any future maintenance or testing is needed.
For Surge Suppressors installed in the
“preferred” connection method (page 12),
upstream overcurrent protection should be
installed based on the maximum current
carrying capacity of the conductors.
Australian regulations AS3000-1991, Table B2
specifies the following upstream protection for
the protection of single phase circuits.
Ph Ph Ph
A mm 2
Conductor Size Required Fuse
A mm 2 CB or Fuse Rewirable Fuse
1.5 mm 2 16A 12A
2.5 mm 2 20A 16A
4.0 mm 2 25A 20A
6.0 mm 2 32A 25A
Fuse selection based on maximum current carrying capacity of
conductor. Smaller rated fuse may be selected if required.
CB = Circuit Breaker.
A mm 2