Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: What is the amp rating of the surge protection?
Document: Commercial surge protectors provide KVA ratings. what is the rating on this device? What adavantage is there in having a higher ating? Upon a failure, how does one prove that the rating had not been surpassed?
This is a solid designed product with it's own robust metal case which is important for any device intending to absorb a high voltage spike. The enclosure helps contain the blast or discharge from a voltage surge.However ...Be sure to read the complete PDF installation guide and use as intended (for surge protection only).
Fortunately, EMT isn't too expensive and I'll probably use it for something eventually. But the extra time to make a second trip to the store and shape a second piece of conduit was enough nuisance for me to reduce my rating to 4 stars. (I should add here that installation was pretty easy. And, if I had chosen to use flex conduit rather than rigid, it would have been even easier. )Having a whole-house surge protector gives me peace of mind.
Do I wish i received 100% payment for my loss, of course! However, they could have easily tested the unit and denied any malfunction of the unit and paid me nothing. So in the end, I would have to say that I do recommend this unit and that is why i am changing my rating to 2 stars. I still stand by original recommendation, that even with this unit attached to your main service, you still need surge protectors for every single thing you plug into an outlet!
Following $ mucho damage to lines, my surge protection was inadequate so I chose this system to upgrade. Easy installation. This is my house unit along with a lightning arrestor, lighting rods and an older surge protector. This is my first defense  and  to my separate garage-workshop where a smaller whole house protector is installed. Read my post on Back2theLand.com
The Leviton 51120-1 Surge Protector installation was fairly easy to install. Fortunately, there were additional empty spaces within each electrical main box to add two additional 20 amp breakers so the surge protectors could be on their own breakers. I did shuffle a few of the existing circuit breakers so the surge protector breakers were the top breakers on one side of each main. The basement is unfinished so installation was much easier for the first two surge protectors. The third was installed in an outbuilding with plywood interior walls.
Easy to install. You must add a 20 amp double pole circuit breaker to you circuit breaker panel. If your panel is inclosed in a wall you may need to cut into the wall to install as it should be flush to the panel. Only 4 wires to connect. If main circuit breaker is in the same panel, ground and netural can be connected together.
The whole house protection at the "meter" you bought from the electric utility may not protect your electronic gear - nor is it expected to by the utility. It protects their meter, their wiring, and maybe "big iron" electrical appliances (refrigerator, washer, etc.). It might not protect your circuit boards in hot tubs, computers, televisions, and so on. Get this device to protect your sensitive electronics. It is designed to do what you really wanted and needed.
You can find detailed installation instructions on the Leviton website if you need to assess the complexity of installing before buying.Just note that this protector does not come with the four wires required to connect it to the main panel. It needs two black wires (one for each of the two hot electric busses), one white one (for the neutral connection) and one green (for the ground connection). You can use any cable or wires with a minimum of 12 gauge if connected to a 20 amp breaker.
I may never know how many, if any, voltage spikes it smoothed. I will only know when a surge overloads it. At least, until it fails, I have peace of mind.
Answer: yes