Raymarine 150/400 manual Ferr ite, Attach the power cables

Step 3: Install the Course Computer 15

3.4 Attach the power cables

WARNING: Electrical safety

Make sure the power supply is switched off before you make any electrical connections.

Follow these steps to provide power to the course computer:

1.Measure the total length of cable run from the boat’s distribution panel to the course computer, then use Table 3-1to identify the appropriate cable size.

Note: When selecting power cable you must use the gauge specified in Table 3-1. If in doubt, use a heavier gauge cable than specified.

Alighter gauge cable might cause a voltage drop between the supply and the course computer. This could cause the course computer to malfunction and will reduce the power supplied to the drive unit.

2.Route the cables back to the course computer, taking into account the EMC installation guidelines (page 7).

3.Install a circuit breaker or fuse on the power supply to suit the drive unit connected to your autopilot system (see Table 3-2).

4.Connect the cables to the POWER inputs on the course computer.

5.Attach the suppression ferrite (supplied) around both the positive and negative power cables,Courseb tween the cable clamp and course computer. When you attachterminalscoputerthe ferrite, you must loop both power cables so that the ferrite encloses two passes of each cable.

Secure the ferrite with the small tie-wrap (supplied).

Power	Fuseor	Ferrite
supply		D5380-2
	circuitbreaker

Step 3

Course computer – connecting power supply