To improve fire safety for solar panel installations, the DC plus and minus lines must be routed separately (NPR5310) and airtight (BENG) through the roof into the building. For all new construction, both residential and non-residential, permit applications must meet the requirements for Nearly Energy Neutral Buildings (BENG) from 1 January 2021.
PVtube® consists of two gland caps, two tubes and two base plates with a sealing ring. PVtube® is available as a basic set (1 string version) with article number: PVT-1S
Once through the roof, the cables must be fed into a cable duct or pipe to the inverter. Since this is preferably done behind the knee board, it is important to ensure that this is done separately. It is therefore advisable to route the PLUS and MINUS cables separately through a hostalite tube.