Electrical Wiring - Lewmar V8 Owners Installation, Operation & Servicing Manual

4. Electrical wiring

4.1 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.
DO NOT confuse cable length
with the length of the vessel
Windlass performance is directly related to cable size and length.
Voltage drop over the complete wiring run must not exceed 10%.
0 - 23 m 0 - 75 ft
35 mm² 2 AWG
0 - 20 m 0 - 76 ft 20- 27 m
35 mm² 1 AWG
4.2 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.
Overload protection, in the form of the circuit breaker/fuse supplied, must be built into the windlass wiring
circuit.
⚠ WARNING!
NOTE:
• 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.
• 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.
4.3 Control switch installation
Follow the mounting instructions supplied with the switch.
NOTE: In a multi station installation all switches must be wired in a parallel circuit.
4.4 V8/9/10/12 AC electric wiring installation
AC electric wiring information for the V8/9/10/12 will be published on a separate addition that can be found on
Lewmar website www.lewmar.com
2.5 KW 24V DC USING 66000894 200 AMP MCB
CABLE SIZING FOR LENGTH OF CABLE RUN
23- 34 m 75 - 95 ft
50 mm² 1 AWG
3.5 KW 24 VDC USING 66000895 250 AMP MCB
CABLE SIZING FOR LENGTH OF CABLE RUN
76 - 96 ft 27 - 38 m
50 mm² 0 AWG 70 mm²
Lewmar V8/V9/V10/V12 Vertical Windlass ref 66300094 Iss.6
34 - 47 m 95 - 119 ft 47 - 64 m
70 mm² 0 AWG
96 - 122 ft 38 - 52 m
2/0 AWG 95 mm²
119 - 151 ft
95 mm² 2/0 AWG
122 -154 ft 52 - 66 m
3/0 AWG 120 mm²
154 - 193ft
4/0 AWG
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