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What is an NMEA 2000 drop cable?

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An NMEA 2000 drop cable, is a cable used to connect NMEA 2000 devices to the network. An NMEA 2000 network consists of 1 backbone, with multiple devices coming from the backbone via drop/spur cables. They are usually connected to the backbone by adding T-Pieces for the drop cables to be connected to.

There are certain limitations and NMEA standards on drop cables, such as the maximum allowed length on a drop cable is 6metres. They are also current rated, depending on whether the cable is Lite, Mid or Heavy, and whether the connector on the cable is Micro or Mini.

Refer to relevant NMEA 2000 spec appendix I for cable information.