I cannot say enough good things about this product and this company. I purchased this transfer switch in July of 2014 to go along with my new Westinghouse WH6500E portable generator. I am reasonably handy, and have done a small amount of electrical projects before, but by no means am I a professional. I did all the setup, installation, and wiring myself. My setup includes the portable generator with a 30 amp power cord feeding into a Reliance Controls power inlet box mounted on the house. I then installed permanent 10 gauge building wire between the power inlet box outside and the transfer switch mounted inside next to my panel. For the most part it was all very straightforward and I expected to have no problems.After initial setup I got the generator running to do a quick test. Long story short, there was a problem, and I could not run off the generator power. I struggled for 6 months to figure out what was wrong. I did various tests, but did not want to break down and pay an electrician, so I continued to hunt for the issue myself. After 6 months, I finally decided to call Reliance customer support. I was impressed to get connected to a very helpful lady from Racine, WI. Imagine that, good ole US of A customer support! She was extremely helpful, and was happy to give me her email address so I could send pictures of my setup for diagnostic purposes. We communicated via phone and email over the course of 2 days, and she quickly helped determine my issue after having me run 2 tests.The problem was entirely mine, the Reliance Controls transfer switch works flawlessly. In fact, the problem I had was a clamp that was too tight on my building wire, and was causing a short. I had arc marks on the transfer switch due to my wiring short. That did not phase the Reliance Controls transfer switch at all. The breakers on the switch and the generator worked as they should. Everything is fixed and working correctly now, thanks to the great customer service at Reliance Controls. This product is extremely robust and well designed. I would recommend this to anyone!A couple of lessons learned from my experience. Professional electricians would obviously already know this stuff, but I was learning as I went.1) Be careful not to over tighten cable clamps, it's easy to do.2) The power inlet cord gave me some issues. You need to make sure you really get the cord at the inlet box pushed in and turned as far as it will go. It may take a slight bit of force, but if you don't, you may only get one side of the power coming through.3) The instructions are slightly misleading for the wiring of the watt meters in the transfer switch. Make sure you only have 1 side of the black wire and 1 side of the red wire passing through each of the watt meters.