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This is a 3 wire surge protector. It is rated for HVAC but is ideal for whole house supression in a house with a circuit breaker pannel (older style) that uses a comman bus bar for both nutral and ground wires. Newer pannels use separate nutral and ground bus bars the pannel so a 4 wire surge protector would be needed. The AG3000 easily installs in a knock-out hole on the side of the circuit breaker pannel and connects through a double circuit breaker that you need to purchase separately. The AG3000 has been independently rated as a best in class unit. but don't take my word on that... Go do your own research. When the unit is in opertation it has a bright green LED light that showes the unit is working. However virtually all surge protectors also have this feature. In summary: The price is good, it installs easily, and it seems to be working just fine.Read full review
Verified purchase: Yes | Condition: New
For the protection that this offers. It's the cheapest insurance you can get. Pros - easy to install. It took me 15 minutes - DONE! The green light is very noticeable, so there is no mistaking if it is working or not. Cons - none, as of this review.
Verified purchase: Yes | Condition: Pre-owned
My AC guy tried to sell me this unit for $250.00 installed, I snagged the part number ordered and installed it myself, the install was very easy, the green light is on and seems to be doing the job.
Verified purchase: Yes | Condition: New
This item was compact and included great instructions. Was simple to install and any average do-it yourselfer would not have any problem. Now as long as it does it's job when and if the time comes??
Verified purchase: Yes | Condition: New
I had one for a few years and then the green light went out. Assuming it did it’s job, I bought another and in the process of installing it noticed the hot connection in my ac disconnect was shorting or arcing or something and the wire was burned. The connection itself broke apart when I went to disconnect the wire. My AC had continued to work, but it did alert me to an issue that was otherwise undetected.
Verified purchase: Yes | Condition: New
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