Raymarine e7 Installation Instructions Manual page 36

4. Red cable (positive).
5. 7 A fuse.
6. Black cable (negative).
7. Video input cable.
8. NMEA 0183 data cables.
9. NMEA 0183 screen (thin black wire; must be connected to
ground point).
Power distribution
Raymarine recommends that all power connections are made via a
distribution panel.
• All equipment must be powered from a breaker or switch, with
appropriate circuit protection.
• All equipment should be wired to individual breakers if possible.
Warning: Product grounding
Before applying power to this product, ensure it has
been correctly grounded, in accordance with the
instructions in this guide.
Grounding
The following requirements apply when grounding Raymarine
equipment which does not have a dedicated drain wire or shield:
Common ground point
The negative wire must be connected to a bonded common ground
point, i. e. with the ground point connected to battery negative, and
situated as close as possible to the battery negative terminal.
36
1
1. Power cable to display
2. Bonded common ground connection
3. Battery
Implementation
If several items require grounding, they may be first be connected
to a single local point (e.g. within a switch panel), with this point
connected via a single, appropriately-rated conductor, to the boat's
common ground.
The preferred minimum requirement for the path to ground (bonded
or non-bonded) is via a flat tinned copper braid, with a 30 A rating
(1/4 inch) or greater. If this is not possible, an equivalent stranded
wire conductor may be used, rated as follows:
• for runs of <1 m (3 ft), use 6 mm
• for runs of >1 m (3 ft), use 8 mm
In any grounding system, always keep the length of connecting
braid or wires as short as possible.
Important: Do NOT connect this product to a positively-grounded
power system.
References
• ISO 10133/13297
2 3
2 (#10 AWG) (6 mm) or greater.
2 (#8 AWG) or greater.
e7 / e7D — Installation instructions