Electrical Installation - Dometic SeasStar Power Assist Installation And User Manual

3-14

3.9 Electrical installation

WARNING!
All wiring must comply with ABYC E-11, ISO 10133, or any other standard
required in your jurisdiction.
The SeaStar Power Assist requires a 12V or 24V power source and can
draw up to 50A (25A with 24V source) when the steering is in heavy use. It
is important that the power supply wires are correctly sized for the load.
Typical Source Connections
• Direct to the batteries.
• To battery switches. Never switch the negative wire.
• To a bus bar or power distribution panel. Ensure that the wire size from
the bus to the batteries is sufficient to handle the peak current of all
accessories connected to the bus. Many boats have a positive and/or
negative bus behind the helm or in the center console. These are
typically supplied to handle light accessory loads and usually do not
have sufficient wire size to supply the P/A. In general, buses that supply
power to vessel electronics such as radar and GPS are usually not
acceptable power sources for the P/A.
NOTE
Avoid powering the P/A from the same distribution panel as equipment
that may be sensitive to electrical noise. Use a separate distribution panel
or connect directly to the battery.
ABYC E-11 and ISO 10133 require that all wires carrying positive voltage
must be protected with an overcurrent protection device within 7" (ISO:
200 mm) of the power source. Use a fuse or circuit breaker rated for marine
use, with a rating of 50A (25A in 24V installations). Dometic offers two
ABYC-compliant fuse options that you can find listed with the available
accessories in section 6.
WARNING!
Failure to use a circuit overprotection device may result in a fire and/or
explosion leading to property damage, personal injury, and/or death.
Refer to the wiring diagram in figure 3-10:
Connect the harness red wire to the positive (+ve) supply.
Connect the harness black wire to the negative battery terminal or
bus bar.
Connect the purple ignition wire to a 1A fused engine ignition source.
An additional switch can be wired into the circuit that will allow an
operator to deactivate the P/A in a low-battery situation.
Properly route and secure the power harness and ignition wires away
from sources of heat (e.g. engine exhaust), battery acid, and
mechanical damage.
EN