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Worcester-Bosch GREENSPRING CWi47 Manual

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Electrical connection
GREENSPRING CWi47 – 6 720 646 322 (2015/04)
metallic services must be as close as practical to their entry
point, before any branch pipe work and a maximum of 600mm
from an internal meter. Bonding conductors must be copper
and the same size as other bonding conductors and not less
than 10mm
2
. The bonding conductors must be permanently
fixed to the metal pipes with clamps and labels (to BS 951) in a
visible position to allow for inspection.
8.2.2 Supplementary bonding
Supplementary bonding is normally carried out in an area of
increased shock risk e.g. bathrooms. Consult a qualified
electrician for them to determine if the installation requires
supplementary bonding as specified in the 17th edition of the
IEE Wiring regulations (BS 7671:2008).
8.3 Connection
▶ Connect the mains electrical cable to an earthed power
point.
8.4 Power cable
The appliance is provided with a labeled power cord and
earthed main plug.
Fig. 49 Mains power cable connections
The mains supply to the appliance must be
either:
▶ The mains electrical supply to the water
heater and system wiring centre must be
common and through either a common
fused double pole isolator or a fused
three pin plug and unswitched socket.
▶ The isolator shall be situated next to the
water heater for new systems and, where
practicable, replacement heaters.
▶ The isolator must have a contact
separation of 3mm minimum between all
poles. Any system connected to the
heater must not have a separate
electrical supply.
If the power cable gets damaged it must be
replaced with a genuine spare part.
6720608913-09.1AL
… 35 …


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