Electrical Equipment Connections

High Current 12 VDC Power Source Requirements:

Source	Battery Bank, 12 VDC, Marine, Deep Cycle
Voltage Range	11.3 – 16 VDC
Continuous Current	55 A
Overcurrent Protection	80 A (Customer Supplied)

High Current 12 VDC Power Connection Instructions

1. Connect Cable 1 and Cable 2, 2 AWG conductors, to the 12 VDC power source.
   1. Cable 1 and Cable 2 are supplied as length 0.35 m and approximately 0.1 m is routed within the gyro frame.
2. Splice customer-supplied 2 AWG conductors to Cable 1 and Cable 2 in accordance with the Crimping Instructions in Drawing No. 90511 – Seakeeper 1 Cable Block Diagram, using Seakeeper-supplied butt connectors, to increase conductors to desired length. The maximum cable length is 29.53 ft (9.0 m) each.
3. Crimp Cable 1 to B+ Conductor (red). Conductor should be continuous throughout entire length; do not coil. The most direct route to the 12 VDC power source should be used.
   1. Repeat Step 3 for Cable 2 to B- Conductor (black).
   2. Install approximately 2 in. (51 mm) of double wall (adhesive lined) heat shrink tubing over entire butt connector and onto both sides of conductor insulation.
4. Connect plus conductor (B+, red) through dedicated 80 A overcurrent protection device (customer-supplied) and a dedicated isolation switch (customer-supplied), then directly to battery plus terminal or bus bar.
5. Connect minus conductor (B-, black) directly to battery minus terminal or DC negative bus.

Seawater Pump 12 VDC Power Source Requirements

Power Source	Battery Bank, 12 VDC, Marine, Deep Cycle
Voltage Range	10 – 16 VDC
Current Rating	Max 15 A rating
Overcurrent Protection	Per pump specification, max 15 A

Seawater Pump 12 VDC Power Input Connection Instructions

1. Connect Cable 7 (P/N: 30327) to Seakeeper 1 “SW Pump DC In” as shown in Drawing No. 90511 – Seakeeper 1 Cable Block Diagram, with overcurrent protection corresponding to seawater pump selected.
2. Connect the 14 AWG plus conductor (red) through dedicated overcurrent protection device (customer-supplied), maximum of 15 A, to dedicated battery isolation switch.
   
   1. The Cable 1, 2 AWG B+ conductor (red), is capable of carrying the current for both the High Current and Seawater Pump from the 12 VDC power supply to the battery isolation switch.
3. Connect the 14 AWG minus conductor (black) directly to battery minus terminal or DC main negative bus.

Seawater Pump 12 VDC Power Output Connection Instructions

1. Connect Cable 5 to the Seakeeper 1 “SW Pump 12 VDC Out” for DC power output to the seawater pump. Cable 5 is a 2 x 16 AWG cable, 16 ft (5 m) length, with a size 16 female Deutsch plug.
2. Pumps rated at 12 VDC, 15 A maximum, customer-supplied, must be configured with a Deutsch DT series, 2-pin receptacle to mate with the connector shown in the following figure.

3. Cable 5 must be routed and installed in the vessel from the Seakeeper 1 “SW Pump 12 VDC Out” Deutsch connector (pins end) to the DC seawater pump cable Deutsch connector (socket end).
   
   1. Connect Cable 5 plug end (socket end) to the customer-supplied receptacle end (pins end). The recommended wiring is shown in the following figure.

4. Seakeeper DC Seawater Pump Assembly (P/N 30331), which is prewired for Cable 5, is available as an option with the Seakeeper 1.