Electrical Wiring - Lewmar Integra Autopilot Drive Product Manual

4- Electrical Wiring

4.1 Generally
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.
Overload protection, in the form of the circuit breaker (not supplied), must be built into the wiring circuit of both
the motor and clutch. Refer to table 5.4 for circuit breaker specification requirement.
The circuit breaker should be positioned close to the battery in a dry, readily accessible place.
The breaker must be manually reset should an overload occur that causes it to trip to the off position.
Lewmar recommends to source and install cable that meets the requirements of the standards and
regulations relevant to the installation and codes of practice.
The cable sizes are calculated in order to maintain a maximum overall voltage drop of 10% supply over whole
cable installation at max load current as per ISO10133.
If you are not sure you understand these guidelines, seek professional help. Ensure that the installation
complies with USCG, ABYC, NMMA or other local regulations.
4.2 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, follow-
ing the route of the cables.
CABLE SIZING FOR LENGTH OF CABLE RUN
up to 2 m up to 40 ft
6 mm² 10 AWG 10 mm²
4.3 Electrical wiring
WARNING! All electrical work must be carried out with
the power OFF. Isolate using circuit breaker/isolator.
1. The Integra drive has electrical connections for:
Drive motor: two single-core cables, twisted as a pair, sleeved with Black (+) and Blue (-) cores
Clutch: a two core cable with Black (+) and White (-) cores.
2. Follow these steps to connect the drive to the course computer:
Connect cables to the Integra drive cables using appropriate electrical connectors or junction boxes at the
correct power rating.
Route the cables back to the course computer, taking into account the EMC installation guidelines
Fit circuit breakers as specifi ed on page 8 between the Course Computer and the Drive Unit.
3. Connect the cables to the course computer
(See manufacturer's manual for full information)
Clutch terminals: black core to +VE, white core to -VE.
Motor terminals: at this stage you can connect either motor cable to either terminal.
4 m 41 - 66 ft
8 AWG
Lewmar Integra Autopilot Drive Manual ref B10420 iss.1
DO NOT confuse cable length
with the length of the vessel
NOTE! If Raymarine SPX10
go directly to 4.4
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