Ancor NMEA 2000 Cables: Power, Backbone, Tees & Drop Cables

Building or extending an NMEA 2000 network requires several different components. Ancor uses colour-coded couplers: red for the power connection, yellow for backbone links and black for device drop cables. Choosing the correct connector type and cable length matters just as much as choosing the correct part number.

Four functions to account for

Power tee · 270000

Connects network power through a red-coded tee. The included power lead is 1 metre long.

Backbone links

Yellow-ended 270001, 270002, 270005 and 270010 connect matching backbone tees across the boat.

Device tees

A single tee (270101) supplies one drop connection; the two-way 270103 connects two device drops without adding a separate backbone segment between their branches.

Drop cable · 270302

Black-coupler cable runs from the tee to the device. It is a different cable type from a backbone extension.

Find the exact cable or fitting

MPN Component Length What it does
270000 Power cable with tee 1 m (3.3 ft) Red-coded power tee that introduces network power
270001 Backbone cable 0.5 m (1.6 ft) Short yellow-coupler backbone section
270002 Backbone cable 2 m (6.5 ft) Yellow-coupler backbone section
270005 Backbone cable 5 m (16 ft) Longer yellow-coupler backbone section
270010 Backbone cable 10 m (32 ft) Longest backbone length in this comparison
270101 Single tee connector Connector One tee connection for a device drop
270103 Two-way tee connector Connector Two drop-cable connections from one tee assembly
270302 Drop cable 2 m (6.5 ft) Black-coupler cable between a device and a tee

Plan the connections before ordering

  1. Locate the existing backbone and note whether its connectors match the Ancor NMEA 2000 micro connector configuration.
  2. Measure the length between backbone connection points. Available examples here include 0.5, 2, 5 and 10 metres.
  3. Count device branches. A single 270101 tee has one device drop connection, while 270103 accommodates two.
  4. Choose the drop-cable route separately from the backbone route. Part 270302 is a 2-metre drop cable.
  5. Confirm power injection, appropriate electrical protection and end-of-network termination using the equipment installation manuals.
A normal NMEA 2000 network requires termination at both ends. Ancor specifies male 270106 and female 270105 terminators; the power tee, cables and device tees listed here do not automatically include them. Check the complete installation bill of materials.

Explore the exact Ancor parts

Choose the corresponding part number to review its product information and availability.

Other marine electrical guides

For general marine wire joining and sealing, see the Ancor heat-shrink butt connector guide. NMEA 2000 network fittings and crimp terminals serve different installation purposes.

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