We normally try to avoid routing cable through vents, but sometimes it makes sense.
Here are the pros and cons:


  • No roof penetration
  • May present the shortest route for optimal system design/performance


  • Roof Box installation not designed for Vent creating PV wire exposure on the roof
  • Exposure to the elements including heat from the burner
  • Challenging to effectively secure the PV wire route that passes through the vent
  • May present a longer route than is ideal for optimal system performance
  • Aesthetically displeasing