question

Thank you very much for your helpfulness. To answer your question, I understand 10m (33 ft) is the official maximum length, most likely due to voltage-drop/signal-attenuation. Most of my runs will be under that length, but in a very hostile environment, and yes, two of my runs must be longer (40-50 ft). NMEA 2000 cable offers good shielding, and with cable wire sizes of Micro-22awg; Mid-20awg; and Mini-18awg, IF one or more of these NMEA 2000 cables does indeed use wire larger (AWG) than in the VE.Direct cables, then voltage-drop/signal-attenuation would be less, allowing longer runs, and with good shielding, the cables would pick up less noise. Additionally, the warmer the wire, the greater its resistance, so the 127*F temp of my engine room reduces the official 10m max length (not sure to what extent because I do not yet know what gauge wire Victron uses in the VE.Direct cable, nor if they increase the wire gauge used in the cables as the pre-made length is increased to keep signal/voltage quality within specs. Have you (or any of our other helpful Victron Community or Victron Technician/moderators discovered the specs (wire construction and AWG size or metric cross-section) of the VE.Direct 4-conductor cable? I deeply appreciate any/all help.

Probably better using the VE.CAN adapters and cabling.