Owner`s manual

World Class Catamarans
5-3
STANDARD FEATURES
BATTERY LAYOUT AND MANAGEMENT
The 270 SD is equipped with three batteries, which are located in the aft rigging compart-
ments. They can be reached using the access hatches located on the aft transom wall beneath
the livewell and fishbox. A cranking battery is installed on each side, and a dedicated house bat-
tery is installed in the starboard compartment. Wire leads run forward, through the hull rigging
tube, to the battery management panel located on the vertical wall beneath the binnacle. See
Chapter 3 for information regarding the operation of this panel. The engine cranking leads run
aft, through the hull rigging tube, from the management panel to a positive stud mounted on
the bulkhead in each aft rigging compartment. The negative engine leads are connected to the
common battery ground using the cranking battery on their respective side (see diagram below).
The house battery provides the power for all your DC accessories. The main lead runs for-
ward, through the hull rigging tube, to the “HOUSE” switch on the battery management panel.
From there current is routed to the console through the 50 amp “DC Main” breaker located on
the top left corner of the battery management panel. During normal operation this breaker can
remain in the “ON” position, and the “HOUSE” switch can be used to control the flow of current.
The main ground for all DC accessories is tied into the common ground on all batteries (see dia-
gram below).
For a detailed drawing of the battery management panel connections, see the diagram on
page 12 of this chapter.
PORT
CRANKING
BATTERY
HOUSE
BATTERY
STBD.
CRANKING
BATTERY
POSITIVE STUD
POS. ENGINE LEADS
PORT ENGINE GRD.
POSITIVE STUD
POS. ENGINE LEADS
STBD. ENGINE GRD.
PORT BATTERY LEAD
PORT CRANKING LEAD
DC ACCESSORY GRD.
HOUSE BATTERY LEAD
STBD. BATTERY LEAD
STBD. CRANKING LEAD
AFT