In-Line Fuse And Thermal Breaker Ratings; Seatalkng ® System Loading; Power Distribution - Seatalkng - Raymarine EVOLUTION EV-1 Installation Instructions Manual

Small systems
If the backbone length is 60 m (197 ft) or less, the power connection point may be connected at
any point in the backbone.

In-line fuse and thermal breaker ratings

The SeaTalkng ® network's power supply requires an in-line fuse or thermal breaker to be fitted.
• In-line fuse rating: 5 A
• Thermal breaker rating : 3 A (refer to note below)
Note:
The suitable fuse rating for the thermal breaker is dependent on: 1) How many devices you have
connected to your SeaTalkng ® network; and 2) How many devices are sharing the same thermal
breaker that your SeaTalkng ® network is connected to.
SeaTalkng ® system loading
The maximum loading / LEN for a SeaTalkng ® system depends on the length of the backbone.
Unbalanced system loading:
• Backbone Length: 0 m (0 ft) to 20 m (66 ft) — Maximum LEN: 40
• Backbone Length: > 20 m (66 ft) to 40 m (131 ft) — Maximum LEN: 20
• Backbone Length: > 40 m (131 ft) to 60 m (197 ft) — Maximum LEN: 14
Balanced system loading:
• Backbone Length: 0 m (0 ft) to 60 m (197 ft) — Maximum LEN: 100
• Backbone Length: > 60 m (197 ft) to 80 m (262 ft) — Maximum LEN: 84
• Backbone Length: > 80 m (262 ft) to 100 m (328 ft) — Maximum LEN: 60
• Backbone Length: > 100 m (328 ft) to 120 m (394 ft) — Maximum LEN: 50
• Backbone Length: > 120 m (394 ft) to 160 m (525 ft) — Maximum LEN: 40
• Backbone Length: > 160 m (525 ft) to 200 m (656 ft) — Maximum LEN: 32
9.6 Power distribution — SeaTalkng ®
Recommendations and best practice.
• Only use approved SeaTalkng ® power cables. Do NOT use a power cable designed for, or
supplied with, a different product.
• See below for more information on implementation for some common power distribution scenarios.
Important:
• When planning and wiring, take into consideration other products in your system, some of which
(e.g. sonar modules) may place large power demand peaks on the vessel's electrical system,
which may impact the voltage available to other products during the peaks.
• The information provided below is for guidance only, to help protect your product. It covers
common vessel power arrangements, but does NOT cover every scenario. If you are unsure
how to provide the correct level of protection, please consult an authorized Raymarine dealer or
a suitably qualified professional marine electrician.
SeaTalkng ® power cable (A06049)
When powering the SeaTalkng ® bus (backbone or 5–way connector) from a battery or distribution
panel, the A06049 power cable must be used.
All 3 cores of the cable must be connected correctly:
EV-1 connections 61