Kohler Electric Shower User Manual Page 14

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14
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) required is 6 mm
2
under normal
installation conditions. See note 4.
Important! The shower circuit should be separated from other circuits by at least
twice the diameter of the cable or conduit, and it should not be run through
thermally insulating material or in locations where the ambient temperature is
likely to exceed 30 °C. If any of these conditions are unavoidable it is necessary
to determine the cable size which will prevent damage to the cable caused by
overheating.
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.
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