There's no way to be certain that you've wired properly without knowing what shade will be specified. They generally land in three categories:
- Line voltage where you'll need high voltage wiring either to a junction box or receptacle.
- Low voltage with wireless control where you'll need 2 conductor power wires. 18awg can work for short distances, but I always run 16awg which is good for about 200ft with a single shade. These type of shades can also be powered by a local power supply which means you can also use a receptacle near the shade if it can be hidden in the valance/pocket or behind drapery or Roman shade
- Low voltage with wired control. This one would be most specific to the manufacturer. Lutron has a special 4 conductor wire that has one pair for power and then a shielded pair with drain for control.
Often it's not even enough to know what shade manufacturer... for example, Lutron has shades that fit all three scenarios listed above. Beyond knowing the what type of wire you need, you might also need to know where/how to place it at the shade end.
The good news is you can probably find a shading solution to work with any type of wiring you put in place, but the wiring you install might limit your choices.
Don't forget there are also battery powered shades available from several manufacturers too!
