MAX Power CT45 Electric Tunnel Thruster - Manual (Page 7)

Manual CT35 & CT45 April 2008
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Ensure that all electrical connections are correctly tightened.
Under no circumstances should any flammable products be stored next to the
electrical components of the thruster.
It is essential to install a manual battery isolator and if possible an electric
battery isolator at the base of the thruster motor power line.
When using a manual battery isolator it must be visible, clearly marked & easily
accessible.
Thruster motor power supply:
These values are given as an indication, assuming that the batteries are charged at
100% and in charge, that is 13.8V.
The performance data of the CT35 / CT45 is measured with an approx. consumption of
250 Amps and approx. 11V at the motor’s connections.
Please refer to the characteristics given by the manufacturer of the batteries that will be
used (see section 9 “Batteries”).
Power wiring:
Measure the shortest and most direct route possible between the battery(ies) and the
electric motor; remembering to allow for both “positive and negative” cables.
Recommended cable sections:
Cable lengths CT35 - CT45 12 V
L ≤ 5 m (2,5 x 2) 50 mm²
5< L ≤ 10 m (5 x 2) 70 mm²
10 < L ≤ 15 m (7,5 x 2) 95 mm²
15< L ≤ 20 m (10 x 2) 120 mm²
For all connections, use appropriate terminals for the cable sections chosen.
It is possible to reduce the cable section to facilitate easy connection but only over a
short distance.
In this case, appropriated crimp fittings should be used at the
connections.
Please consult the "Electrical installation" diagram p. 11 for more information
8. MAIN
POWER FUSE
Fuse sizes for overcurrent protection are to be determined on the basis of the cable
sections in the circuit and NOT the amperage drawn by the appliance (thruster motor) in
the circuit.
Thruster Maximum Amperage Max Power Fuse size
CT35 250 A 125 A
CT45 250 A 125 A
9. BATTERIES
Thrusters are high amperage consumers with instantaneous demands, thus, we
recommend you use maintenance-free “starting” type batteries, with high CCA outputs.
For example: Exide Maxxima 900, 12V, capacity 55Ah / starting current 800CCA.