how bad is this- I installed a new under sink disposal- the very old switch was dangerously located at hip height by the sink.. so I also relocated it to inside the sink cabinet- no way to get it easily on the wall. This way we feel it is very safe when we soon have a toddler running about. Anyway, the old switch was 20amp rated, gave a good click when you switched it, but so did all the old switches in the house that I have replaced. I put in a standard (25 cent) switch instead. Will my house blow up ;-) Seriously, will the switch over heat and cause a massive house fire.