News Center

Where do I connect my NMEA 2000 to power?

NMEA2000 Signal Conversion Box

NMEA 2000 networks must be connected to a 12 Vdc power source using a dedicated NMEA 2000 power cord.



When connecting an NMEA 2000 network to a power source, the following precautions must be observed:



The dedicated NMEA 2000 power cord must be connected to 12 Vdc. Connecting to 24 Vdc or any power source higher than 12 Vdc may damage NMEA 2000 network components or devices.



A dedicated NMEA 2000 power cord should be connected to the power source via the boat's auxiliary power switch. If there is no auxiliary power switch, or if connecting an auxiliary power switch would cause electrical interference, the power cord must be connected to the power source through a series switch.



The dedicated NMEA 2000 power cord must be connected to the top of the T-connector, not the side.



The power cord can be connected to the top of the T-connector at either end or in the middle of the NMEA 2000 network backbone, depending on the length of the backbone and the power needs of the devices on the network (power distribution and balancing).



Some NMEA 2000 devices provide power for NMEA 2000 networks, but this may not be appropriate for every NMEA 2000 design. To avoid having two power supplies connected to the network, you can install these devices using power isolators



Premier Cable supplies a comprehensive range of marine & offshore cable for use shipboard wiring. Our marine cables are designed to perform in extremes of temperatures, both high and low, and to be resistant to adverse elements such as humidity, oil, acid, muds and salt water, as are prevalent in most marine and offshore operational environments.


NMEA2000 3-Port ConnectorN2K 4 Way ConnectorNMEA 2000 Starter Kit T-Connector 5 Port

Related News

What is a terminal block used for?

While there are many factors to consider when designing an overall system, terminal blocks are an optimal solution for complex electrical system connections. With a variety of color options and configurations, Premier Cable’ terminal blocks offer a range of options to meet your design challenges.

CANBus Applications

CAN-bus has been widely used in various automation control systems. For example, CAN-bus has incomparable advantages in various fields such as automotive electronics, automatic control, smart buildings, power systems, and security monitoring.

Introduction to M12 connector pin coding

M12 encoding types are A encoding, B encoding, D encoding and X encoding. A-code, B-code and X-code are some of the earliest developed and longest-available M12 connectors. The latest M12 coding types currently under development are K coding for AC and L coding for PROFINET DC.

Cables – What are the correct cable sizes for an NMEA 2000 network?

The three different sizes of NMEA 2000 certified DeviceNet standard cabling are "micro," "mid," and "mini."

What are the advantages of NMEA 2000?

The Premier Cable Starter Kits provide everything you need to get to create a basic NMEA 2000 network from scratch.

The role of DeviceNet terminal resistor

DeviceNet_network is a fieldbus network protocol based on Controller Area Network (CAN). In the DeviceNet network, the terminal resistor plays the role of compensation and protection for signal transmission. The function of the terminal resistor is to eliminate signal reflection and interference and ensure the signal transmission quality.