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2.5
Wiring Installation
All electrical wiring installation work should be carried out in accordance with the code of practice or applicable
national standards appropriate to the country of installation.
To maintain electrical integrity of the SELV wiring on the input, output, loop and communications lines all SELV
wiring should be segregated from the LV mains wiring and be wired using cable with insulation suitable for the
application.
To minimise the effects of EMC interference all data wiring circuits should be wired with a twisted pair of
conductors with a cross sectional area suitable for the loading conditions.
In areas where cabling may come into contact with high frequency interference, such as portable radio
transceivers etc. the data wiring cable should be of a twisted pair construction within an overall screen. Care
should be taken to correctly terminate this screen, refer to the appropriate sections of this manual for further
information for each circuit type.
NB: Minimum / Maximum cable size for all external connections is limited to 0.5mm² / 2.5mm² (22-14AWG).
2.5.1 AC Mains Wiring
Route the high voltage mains AC wiring into the
enclosure at the upper right corner only. Keep the
AC wiring away from the circuit boards and all
other wiring.
FUSE
Brown
Green
LIVE
EARTH
NEUTRAL
Panel Wiring
Blue
3.15A
AC Mains terminations
The fuse is rated as follows:
T 3.15A H 250V
Replace with correct rating and specification only.
Must be
earthed
The panels must be connected to
the supply earth through the power
cable.
The mains input connector is shown in the
diagram opposite. Note the positions of the earth,
neutral and live terminal connections. These are
clearly marked on the label next to the connector.
The connector block contains an integral fuse
holder.
Secure the mains input wiring by tie wrap as close
to the terminal block as possible.
Connect the Control Panel to the mains supply via
a readily accessible disconnect-device (Isolation
Switch) and suitable earth fault protection
incorporated in the building installation wiring. The
Mains cable should be 0.75mm
2
cable rated at
250V and fused via a 5A anti-surge fuse.
2.5.1.1 Cable Gland
The cable gland and any cord clamp bushings used in routing the Mains cable through the
20mm knockout must have a minimum flame-retardant rating of 94HB.
Suggested glands and bushings are: -
Type
Gland IP65
– Brass M20, EExd / Eexe
Gland IP68
– Nylon 66 M20 Black, UL94V2
Bushing
– Nylon 66 M20 Black, UL94V2
Manufacturer
Lappcable
Multicomp
Multipcomp
