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Hole Sizes for Garmin and Cortex® Marine Cable Installation
The following chart will outline the minimum hole sizes needed for Garmin marine cable routing:
Minimum hole size chart
Cable Description | Hole Minimum Diameter |
| USB Cable | .75" |
| Video Cable | .5" |
| Cortex® VHF Patch Cable | .75" |
| Cortex® Hub Power Cable | .75" |
| Cortex® Cellular Antenna Patch Cable | .5" |
| NMEA 2000 Cable | .75" |
| Power Data Cable (4-pin small) | .5 |
| Power Data Cable (4-pin large, 8-pin, 2-pin) | 1" |
| Steering Actuator Cable | 1.25" |
| HDMI Cable | 1.25" |
| Garmin Marine Network (small connectors) | .75" |
| Garmin Marine Network (large connectors) | 1.25" |
| Panoptix Livescope Cable | 1.25" |
| Rudder Feedback Cable | 1" |
| Interconnect Cable | 1" |
| NMEA 0183/Audio Cable | 1" |
| In/Out Cable GTB 10 | 1.25" |