Stuart Turner 12/50 12 V - Manual (Page 6)

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When an alternator or generator is the supply source, ensure correct voltage is available
at the motor when pump is operational.
Earthing
The d.c. supply source to the motor could be from a battery, transformer, altenator or
generator, hence there is no requirement or facility for earthing via the supply cable.
However certain installations may require additional earthing arrangements to be
considered.
Static protection & EMC compliance
The motor can be connected to earth via it’s front mounting foot. This will maximise
ability to discharge electro static energy and lightning interference. It will also assist EMC
compliance.
Supplementary earth bonding
Metallic inlet and outlet pipework should be cross bonded where the system continuity
has been broken by flexible hoses or plastic components.
Wiring
The motor is provided with a factory fitted power supply cord. This must be permanently
connected to the supply source.
The wiring in the power supply cord is coloured in accordance with the following code:
Blue: Negative Brown: Positive
The pump must run in an anticlockwise direction when looking at the pump inlet port. To
ensure this happens the pump supply cord must be connected as follows:
The wire coloured blue must be connected to the negative terminal of the supply source,
marked with the symbol -.
The wire coloured brown must be connected to the positive terminal of the supply
source, market with the symbol +.
Supply Cord Extension
The pumps are fitted with a supply cord to the following specification:-
HO5VV-F2 X 1.5 mm² - 16 Amp rated cable
If the supply cord is to be extended, a cord of the same specification should be used.
Any connections or junction boxes used should be specifically suited for the application
and installed in accordance with the manufacturers instructions.
Fuses
The following table gives the recommended fuse size.
Model Fuse Size (AMPS)
12/50 (12 V) 15
12/50 (24 V) 15
Fuse type should be of the delayed action type (type T or motor rated) with good time
delay characteristics.
The fuse performance variation in relation to ambient temperature should also be
considered.