Stuart Turner RG4000 - Manual (Page 7)

- 7 -
Cont ...
The standard single phase pumps are suitable for a supply of 230V, 1 Phase, 50Hz.
Other voltages and frequencies are available on certain models and it is therefore very
important to ensure the voltage and frequency on the pump rating plate matches the
supply.
When installing a 230V, 1 phase, pump in the United Kingdom, means for disconnection
must be incorporated in the fixed wiring according to the Wiring Rules. This can be done
by permanently connecting the pump to the mains supply via a double pole switched, fused
connection unit complying with BS 1363-4.
When installing a 110V, 1 phase pump it must be in accordance with the current electrical
regulations that apply to the installation.
The standard three phase pumps are suitable for a supply of 400V, 3 Phase, 50Hz and
should be connected via a starter complete with suitably sized thermal overload.
All motors exceeding 370 watt output should be provided with control equipment
incorporating means for protection against overload.
The spur box (fused connection unit) or starter to which the pump is connected should
be mounted in an easily accessible position and labelled if confusion is possible to allow
easy isolation of the unit.
All pumps are continuously rated at the duties specified (see technical specification
section for details).
Earthing
This appliance must be earthed via the supply cord, which must be correctly connected
to the earth point located in the terminal box.
Copper or metallic pipework must have supplementary earth bonding where the
continuity has been broken by flexible hoses or plastic components. Adjacent suction and
delivery pipes should be fitted with earthing clamps to BS 951 and connected with earthing
wire size 4 mm² (Fig. 4).
Cont ...
Certain installations may require additional earthing arrangements such as equipotential
bonding. Reference should be made to the relevant regulations concerning this subject to
ensure compliance.
Fig. 4
Diagram of earth
continuity connection.