Boating New Zealand - July 2018

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expensive) cables. For this reason start batteries are typically

located close to the engine to minimise cable length.

Anchor winches are also high current hogs – typically 50 to

100 amps – and ideally should also have the shortest possible

cable run. Both these cables have critical connections, so

good-quality crimped or soldered terminals are essential. Your

marine electrician will be able to calculate the required cable

speciications and connector sizes.

he house circuit, which provides power for all the

accessories, needs a somewhat lighter cable. But it is still

important to calculate its total possible load (if all devices are

turned on simultaneously) and rate the cable accordingly.

Note that electric motors (fridge or water pumps) often

generate a surge current the instant they are turned on, which

may exceed the normal operating current. After calculating

the total load, a generous reserve should be added to prevent

problems.

For the best strategy, ind a marine electrician in

your area. Ask him to review your wiring and make

recommendations. BNZ

BOATINGNZ.CO.NZ

FOR FURTHER INFORMATION CONTACT Marine Electrics in Auckland on

0800-4-marine, or at http://www.marineelectrics.co.nz.