ᐅ New Construction Preparation for Future Experience Documentation
Created on: 11 Sep 2016 08:47
T
tb111
Hello,
Construction is scheduled to begin for us at the end of October or beginning of November.
We are building a KfW 55 standard house with a gas boiler and a 5m² (54 sq ft) solar thermal system for hot water, installed by a general contractor.
I would like to prepare for a possible photovoltaic system that might be added later.
Is it best to install an empty conduit from the attic to the utility room for this purpose, or should the electrician run a suitable cable without connecting it?
I want to make the house relatively future-proof with simple measures. We have a gas boiler, and I saw in the specifications of another general contractor that they leave two conduits in the utility room for the possible future installation of a heat pump. Are there other things along these lines that can be done now with little effort but could provide significant benefits later?
I would also like to have a 400V (approximately 230-240V 3-phase) line, or at least an empty conduit, installed to the carport, as I expect electric cars to become standard in the coming years or decades.
Thank you!
Construction is scheduled to begin for us at the end of October or beginning of November.
We are building a KfW 55 standard house with a gas boiler and a 5m² (54 sq ft) solar thermal system for hot water, installed by a general contractor.
I would like to prepare for a possible photovoltaic system that might be added later.
Is it best to install an empty conduit from the attic to the utility room for this purpose, or should the electrician run a suitable cable without connecting it?
I want to make the house relatively future-proof with simple measures. We have a gas boiler, and I saw in the specifications of another general contractor that they leave two conduits in the utility room for the possible future installation of a heat pump. Are there other things along these lines that can be done now with little effort but could provide significant benefits later?
I would also like to have a 400V (approximately 230-240V 3-phase) line, or at least an empty conduit, installed to the carport, as I expect electric cars to become standard in the coming years or decades.
Thank you!
Installing cables later through corrugated conduits can be difficult to impossible, depending on the length of the conduits and if there are multiple bends.
If possible, it is best to use smooth conduits with a sufficiently large diameter and pull a draw wire through at the same time. This makes it easier and faster for the electrician later, which reduces costs.
If possible, it is best to use smooth conduits with a sufficiently large diameter and pull a draw wire through at the same time. This makes it easier and faster for the electrician later, which reduces costs.
There is also "flexible" smooth conduit available. However, it is somewhat more difficult to install because it is stiffer due to the lack of ribbing. (Similar to the plastic pipes used for underfloor heating installation).
Back when I worked as an electrician, I only installed it in small diameters. I have no idea if it would be sufficient or if it is available in larger diameters.
Back when I worked as an electrician, I only installed it in small diameters. I have no idea if it would be sufficient or if it is available in larger diameters.
T
toxicmolotof9 Apr 2017 21:01Which length are you referring to? Use a corrugated 32mm (1 1/4 inch) conduit; it is also available with an internal coating. People installing photovoltaic systems easily install both cables inside it, as long as it doesn’t involve bending around eight corners.
It is important that the bend radius is not too tight anywhere, and there are various types of pull-in aids available.
It is important that the bend radius is not too tight anywhere, and there are various types of pull-in aids available.
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