Some NMEA 2000^® devices, such as a boat engine, provide power to the NMEA 2000 network. In some cases, this may be sufficient to provide the appropriate power to the network, but in other cases this may result in providing power to the network in two places, and could result in unexpected behavior or may damage other connected devices.

To accommodate two power connections to the network, you can install a power isolator (010-11580-00) in the backbone to when connecting devices to the network that also provide power. The power isolator allows data communication, but does not allow power to pass through.