11
Electrical
1.
In a domestic installation, the rating of the electricity supply company fuse and
the consumer unit must be adequate for the additional demand. This is a high-
power appliance, and it is essential to contact your electricity supply company to
ensure that the supply is adequate for the appliance. Voltage drop due to local
heavy demand will reduce the performance of the shower.
2.
The appliance
must be earthed
by connecting the supply-cable earth conductor
to the earth terminal.
Supplementary bonding:
Within the bathroom or shower room, all accessible
conductive parts of electrical equipment and extraneous conductive parts that
are likely to introduce earth potential, must be electrically bonded to earth using
a minimum cable size of 4.0 mm
2
if the cable is not mechanically protected
(2.5 mm
2
if mechanically protected).
3.
The minimum cable size (cross-sectional area) must conform to BS7671
4.
To obtain full advantage of the power provided by this unit, use the shortest
possible cable route from the consumer unit to the shower.
5.
A 30 mA residual current device (RCD) should be fitted. This may be part of the
consumer unit or a separate unit.
Plumbing and Electrical Schematic
6.
A separate, permanently connected
supply must be taken from the
consumer unit to the appliance through
a double-pole switch, which has a
minimum 3 mm contact separation.
The switch can be a ceiling mounted
pull-cord type within the shower room,
or a wall mounted switch in an
adjacent room.
7.
DO NOT
twist the individual cable
cores of the live and neutral
conductors, as this will prevent them
from entering the terminal block.
8.
DO NOT
exert strain on the terminal
block.
9.
DO NOT
turn-on the electrical supply
until the plumbing has been completed.
