Lewmar EVO 45 - Electrical Wiring

Lewmar OCEAN & EVO® Electric/Hydraulic Winches ref B2303 Iss.14 | 11
4.1 Electric cable selection
The cable table gives recommended cable sizes based
on total length of cable required, from the battery, fol-
lowing the route of the cables. Lewmar recommends to
source and install cable that meets the requirements of
the standards and regulations relevant to the installa-
tion and codes of practice.
• Winch performance is directly related to cable
size and length. The cable sizes are calculated
so that the maximum overall voltage drop do not
exceed10% over the whole cable installation.
4.2 Wiring
Plan the installation to suit the controls and give the operator a full view of the winch. 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 (not supplied), must be built into the winch wiring
circuit.
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.
DO NOT confuse cable Length
with the length of the vessel!
4. Electrical Wiring
 WARNING!
CABLE SIZE
12V DC
CABLE SIZE
24V DC
TOTAL CABLE
DISTANCE
50 mm2 (1/0 AWG) 25 mm2 (3 AWG) up to 7 m (23 ft)
70 mm2 (2/0 AWG) 35 mm2 (2 AWG) 7-10 m (23-33 ft)
70 mm2 (2/0 AWG) 50 mm2 (1/0 AWG) 10-15 m (33-49 ft)
95 mm2 (3/0 AWG) - 15-20 m (49-66 ft)
 WARNING! All electrical work must be
carried out with the power OFF. Isolate
the winch using circuit breaker/isolator.
 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.
4.4 Electric motor terminal connections
DO NOT over tighten electric motor
terminal nuts.
Tighten M8 front nut to a torque setting of
15Nm to 18Nm