Speak with an engineer. They know better! Make sure to work with professionals. There are many people that are pretending to know what they are doing, but in reality, they have no idea. A friend of mine has gotten pretty screwed over because he has paid lots of money to make some parts of the lighting installation in his house to be automatic. It turns out that the person that was doing this had no idea how to actually do it. I've gotten pretty lucky because I had to Buy PLC in order to make everything work. That's what my guy, who was doing this inside my house, told me. Eventually, everything has turned out fine for me