Easy to install, I had open spaces next to the service entrance in my breaker box. The instructions should have made it more clear to cut the neutral wire as short as possible so now i have to take the front panel off and shorten it. We have had two power outages and a severe lightning storm recently and everything is still working so it MAY be doing its job, but how would I know :-) ?

I eventually bought two of these since I also have a secondary breaker box in the basement. Ideally, for optimum performance, they should be installed at the first breaker opening next to the main feed, but I had to mount one several breakers down due to wiring constraints. My approach is to not have this as the sole protective device. Transients can be sneaky and can enter the house in several ways depending on the transient source, so relying on a single surge suppressor is a risk. Mounting the surge suppressor at a less than optimum location in the breaker box results in reduced effectiveness - so 'just mounting it in the last breaker location in the panel' because it's easy is not the best practice. Due to the fast rise time of the spike, the surge protector should be the first thing the main's encounter when entering the house, but I realize that is easier said than done for many people (including myself) - hence, the use of secondary suppressors as a last line of defense at the outlets. Electronic components are just too sensitive nowadays, so better safe than sorry.

Several people have commented of the unit running warm, but I have have not had the experience.

I'm going to start by saying if you don't know how to work with and around electricity, I don't recommend self install. Working directly with the electrical bus is dangerous, and can be fatal if you don't take the proper steps. That being said, this was a very simple install. Plug on bus installation was incredibly simple. The part of the install that took the longest was relabeling my breaker box. This unit may not offer as much protection as some others that mount off the bus Square D by Schneider Electric HEPD80 Home Electronics Protective Device, but it is cheaper, you don't have to install additional breakers, and it is just so simple to install. If you don't regularly have problems with the power this is probably a great unit for you.

recently had to replace my air handler blower motor due to power surges , hope this surge protection device does the trick. will update
UPDATE: almost one week online , the first surge breaker felt warm and became even warmer which was a concern, all the other breakers in the panel were cool. Amazon with it's fantastic return policy has replace the item. the new Square D surge breaker is installed and will update on any temperature issues .i am removing two stars for this item . the first star goes due to the fact that the surge breaker got warm and I believe there is a slight current draw as noted by my electric meter moving with all loads isolated, could possibly be just the led light . note I have perform this test before and after installing the surge breaker , there was no electrical leakage prior to install. the second star drops off for the simple fact false advertising item states MADE IN USA , this indeed is not the fact as it was made in Mexico. don't have a problem with Mexico since most of the southwest of USA belonged to Mexico at one time. OPTIONAL :drill hole in door to see operating green light , with the circuit breaker box door open , measure from the left side of the jamb where the door latch is and transfer to inside of door. drill from inside of door use a 3/16 -1/4" drill and hold a piece of wood against the outside of door while drilling. deburr whole and with a small paint brush touch up any raw edges to prevent rust .

I've been installing these on a number of panels as added protection from power surges for the last five or so years. Installation is as easy as replacing a breaker and is cheap insurance for your household electronics. This isn't limited to TV's, stereos and computers but numerous household appliances now have electronic controls. Make this part of your "cascade" system by having a TVSS installed at your meter AND at your point-of- use receptacle too!