ᐅ What size conduit should be installed from the roof to the utility room?

Hello,

what size of conduit should we install from the roof to the utility room, or should we install multiple conduits?

We plan to retrofit the following after handover and would like to have a conduit prepared in advance.

Satellite dish
Photovoltaic system up to max 10 kWp

What diameter do the conduits need to be?

What else could be added on the roof for which we should prepare, that I might not be thinking of right now?

Pacc666 schrieb:

What diameters are required for the empty conduits?

Diameter for high-voltage photovoltaic system with series connection: 50mm (2 inches); for low-voltage parallel connection: 100mm (4 inches).

Pacc666 schrieb:

What else could be retrofitted on the roof that one should prepare for, which I might not be thinking of right now?

Air conditioning units, holiday lighting in the style of Tim Taylor.

Which type of photovoltaic system is typically installed?

Air conditioning units on a pitched roof? Christmas lights are out of the question 🙂

Should I install a second empty conduit for the satellite dish, or run the cable through the photovoltaic empty conduit?

Pacc666 schrieb:

Which type of photovoltaic system is usually installed?

Most systems are high-voltage and wired in series, as this is generally more cost-effective. On roofs with shading issues, and for people who are uncomfortable with high voltages on the roof or are concerned about health, fire safety, and possibly fire load contribution, systems wired in parallel at lower voltages are becoming increasingly common. Since the output power remains the same, lower voltage requires a higher current to be carried. This results in the use of thicker cables. Ultimately, what is installed depends on your preference, and there are almost religious debates about the technologies used.

Ok, thanks. There shouldn't be much of a price difference between the 50mm (2 inches) and 100mm (4 inches) pipes, right?

Should I install a separate conduit for the satellite dish, or can I run it together with the conduit for the photovoltaic system?

I would run this through a conduit, knowing that it might be the less ideal solution. As long as you have the inverter in the utility room, the DC from the photovoltaic system will produce correspondingly lower electromagnetic fields that could cause interference.