Why do we call a 3 way switch a 3 way and not a 2 way. I cant tell you how many times a customer has asked me this question and Im tired of not having an answer for them other than "thats just what they call em".
I always tell them "This switch has a mate" or "Can you control this light from more than one switch?" etc. I try not to use trade terminology it only confuses the customers. I call receps "plugs", everyone understands that.