Whatever you do, don't use the Stanley/Belkin heavy duty pigtail gfci devices. I had 3 of them that would randomly trip from electronic noise from my Blueline e-ballasts.
Stanley sent me replacement units that also did the same. It's some kind of design problem with their equipment.
Stanley/Belkin has horrible horrible customer service. Did I mention that they were absolutely horrible? I gave them all kinds of technical information relating to the problem. Gave them tons of diagnostics. They had me RMA the devices for replacements, which also had the same problem. I was routed from department to department and was working with their techs and engineers to help them test in their facility. They were able to reproduce the problem on their side, but they were never able to get me any working units.
I have a humongous folder of email communications with them. They are terrible about following up on service issues. Their internal communications are totally disorganized, and I had to give all kinds of information numerous times to customer service people, accounting people, service managers, technicians, and onandon. They would apologize and promise to get right back to me. I would have to mail them every 2 or 3 week to remind them, upon which they would apologize and start all over again.
This dragged out for almost a year before they finally agreed that they should just refund my money. They made 3 attempts to refund me, but between them losing the paperwork, forgetting to follow up, losing track entirely of the RMA case, another 6-8 weeks passed. When the check arrived, I found that they screwed up again, but this time in my favor. They refunded me double the cost. At that point I was so frustrated at having to follow up on their every step, that I figured I was not about to try to help them get their accounting straight in addition to their technical and service issues.
I've posted some of this info on the Stanley/Belkin heavy duty contractor grade pigtail in various places here on RC.
I finally made my own setups using 20 amp Leviton Smartlocks. Works great... way cheaper.