e300i User Manual
Document #: 0503M01A
REV : 1.3
Approval:
Date: March ’08
Page 13 of 25
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5 WIRE AND CABLE SIZES
WIRE AND CABLE SIZES
WIRE AND CABLE SIZES
WIRE AND CABLE SIZES
5.1 Turbine Wiring
5.1 Turbine Wiring
5.1 Turbine Wiring
5.1 Turbine Wiring
The e300
iiii
wind turbine produces dc power and therefore has two double insulated output wires
(tails). The RED wire is POSITIVE and the BLACK wire is NEGATIVE.
Observe the Polarity at all times. Only cVE RED cables to +VE RED terminals and -VE
BLACK cables to -VE BLACK terminals. Otherwise, equipment damage may result and any
warranty will be invalidated.
The following suggestions are made as a guideline. If you are in doubt, consult an electrician.
The output wires must be extended as required for the installation. Good wire connections are
absolutely essential to avoid poor power delivery and high temperatures at the connection. All
electrical systems lose energy because cables have a resistance. The mounting structure must be
directly earthed for lightning. The power cable is usually brought down the inside of the mounting
structure to give some protection. Supply cables should never be spanned or suspended from the
turbine structure and should be buried at least one half metre deep in a suitable plastic or steel
conduit.
5.2
5.2
5.2
5.2 Lightning protection
Lightning protection
Lightning protection
Lightning protection
Proper grounding is essential to protect the system from induced voltages and static. Local
requirements for electrical installations must be satisfied. Ensure that the generator is electrically
connected to the mounting structure and that the structure is earthed. This is usually done by
burying a 2 to 3m (6’ – 10’) length of water pipe (steel or copper) horizontally, 1000mm (3.3’)
below the ground surface. A good connection is made between the middle of the pipe and the
structure. An improved method is to bury a cross of pipe, which requires a "X" shape to be
excavated. The connection is made in the centre of the cross.
The negative battery connection should also be grounded using a ground point close to the
battery. First, consult the Charge Controller Manual to avoid earth loops. The wire size for
grounding should be the same size as the power cables. Commercial lightning arrestors are
available at electrical stores and can be fitted at the bottom of the structure or pole or at the
regulator input.
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