In my garage I have an electrical 3-phase dryer. I want to add a new 3-phase air-conditioner. I want to be able to switch between the two of them, by using a 3-phase switch. This way, only one of these two appliances, can work at any given time. In the market, such switches, for residential use are already available for purchase.
I was told by two electricians that I am not allowed to install the switch, because such installation is a violation of the building code. My questions are:
- Is my proposed installation of a 3-phase switch a violation of the building code?
- If the answer is a 'YES', then why is it so?
- If I cannot use this switch, what are my legitimate options to make the dryer and the air conditioner able to only work one at a time?