Lewmar CPX 0 ref B10408 iss.2
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5- Electrical wiring
MODEL
CABLE SIZING FOR LENGTH OF CABLE RUN
up to 7 m
up to 23 ft
7 - 15 m
23 - 50 ft
500W
16 mm²
6 AWG
25 mm²
4 AWG
700W
10 mm²
8 AWG
16 mm²
6 AWG
5.1 Electric cable selection
Lewmar recommends the installer source and install cable that meets the requirements of the standards and
regulations relevant to the installation and codes of practice.
The cable table gives recommended cable sizes based on total length of cable required, from the battery,
following the route of the cables to the windlass and back.
5.3 Control switch installation
The unit is supplied with
• Guarded rocker switch (product ref 68000593)
• Contactor (500W- 68000939 / 700W- 68000937)
Follow the wiring diagram § 5.4-5.7
NOTE: Optional electric footswitches and remote handheld control available.
Visit www.lewmar.com for more information
Contactor box used in some installation refer to wiring diagram § 5.5 and § 5.6
Optional wireless remote also available See table below for models and references
WIRELESS REMOTE
(3 BUTTON WINDLASS ONLY)
WIRELESS REMOTE
(5 BUTTON WINDLASS & THRUSTER)
68000967
68000968
Windlass performance is directly related to
cable size and length. Voltage drop over the
complete wiring run must not exceed 10%.
NOTE: In a multi station installation all switches must be wired in a parallel circuit.
DO NOT confuse cable length with
the length of the vessel
5.2 Wiring
Plan the installation to suit the controls and give the operator a full view of the windlass. The wiring system
should be of the fully insulated type, which avoids possible electrolytic corrosion problems. We recommend the
use of type III stranded, tinned copper wire with copper crimp terminals. Most modern installations are negative
return (negative ground) but polarity should be checked.
Short-circuit protection, in the form of the circuit breaker provided must be built into the windlass wiring circuit.
• Circuit breaker supplied:
CPX0-500W
70A (Part No 68000240)
CPX0-700W
90A (Part No 68000349)
• The circuit breaker should be positioned close to the
battery in a dry, readily accessible place.
• The breaker must be manually reset should an over-
load occur that causes it to trip to the off position.
If you are not sure you understand these guidelines, seek professional help. Ensure that the installation com-
plies with USCG, ABYC, NMMA or other local regulations.
⚠ WARNING!
‣ When wiring Lewmar electric motor into the ship’s
electrical system the following caution must be
taken.
‣ When tightening the front nut hold the back nut
with a separate wrench to make sure the back
nut does not turn. If the back nut turns, serious
damage will occur, voiding Lewmar’s warranty on
the electric motor.
5.4 Electric motor terminal connections
DO NOT overtighten electric motor terminal nuts.
