When the electrician ran the line out to our pool, he cut off the 3 prong plug from the pump and installed a 5 prong plug. He also put the same type of outlet on the post. Any idea why he did this? Can I change it out to a normal plug and box? I can't find a timer to go with type of plugin so I have to plug it in and out every day to turn the pump on and off. I got so tired of it last year that I left it on--Big electric bill then. Thanks