Typically for C-Bus underground cable use it needs to be a Cat5E UTP cable with the similar characteristics / impedance as the C-Bus 5005C305B cable.

If you use an underground CAT5E  data cable from brands such as belden or garland etc

We would recommend you ask the supplier to provide confirmation they can provide a CAT5E UTP underground equivalent cable  Gel filled.

Do not use shielded cabling.

Released for: Schneider Electric New Zealand