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Question: Will this work in an outlet where it is not grounded, but it has three-pronged outlets? How well will it work if it is not grounded?
Document: However it does come with a small L-bracket that can be attached to the socket cover screw which helps a little. Only using one plug does have the advantage of leaving one of the outlet plugs free (gives you three outlets -two sppressed/filtered and one not) and also lets it be used at the end of an extension cord.
I bought 5 of these and they work great. neighbor bought some on my recommendation and found that his outlets were wired up incorrectly, probably explaining some old issues. Would highly recommend.
this tripp lite ultrablok is well made, manufactured in china....  i am running a home dj system thru these surge protectors... two power amplifiers, pre amp, equalizer, sound processor, cd player, sonic enhancer...  i have not noticed any issues, or problems.... the green lights on front are displayed and lit...  this ultrablok suppressor with two outlets is faily well built with filters to clean up, but not all electrical buzz.
That way if the prong cover comes off, the prongs won't scratch anything, and the small cover can be found in the bottom of the bag.Additionally, where I rent, some of the outlets have faults of unknown nature. How do I know? Because the red Fault light on this puppy lit up. Same happened at a Starbucks in Boise. Another customer told me his laptop surge protector got really hot in that outlet. So I don't use those outlets.
It technically is a splitter too since it only takes up one outlet in a standard duplex wall outlet, leaving the other one open.5. It comes with a bracket to make mounting to a wall outlet more secure, but I have found it to be secure enough for my needs without it.Cons:1. Like others have said, it would be nice if it could plug into BOTH outlets so you can draw more power.Wishes:1.
Few of the similar devices are rated at 15 amps. Even their own ISOBAR4ULTRA is only 12 amps. The Ultrablok428 even comes with a little bracket that allows you to affix the device to the center screw of a standard outlet so it can't accidentally become unplugged, and the screws are included. This leave the top wall outlet available.Yes, it only has two outlets, but if you value your equipment, or have high-draw appliances you need to protect, look no further.
You can however plug it into the top outlet if you so desire. When I say designed for the lower one, its just the rubber bumper fits better against the wall then the lower outlet and the locking mechinism is designed to use the outlet cover's center screw. The tripp lite locking piece screws into the home outlets center screw and then the tripp lite unit has a slot on top that slides into the metal bracket now protruding from the outlet. A second screw then goes through the bracket into the surge protector.
Despite their relative bulk and heavier weight, I thought these would just fall out with the slightest tug of an electrical cord. Not so. They fit solid into an outlet, and it's not going to fall out. It has a rubber boot on the back of the unit for extra leverage against the wall.6) Easy. They plug in and work. No buttons. Plug in, your done.I am extremely satisfied with this purchase and the price I paid.
product appears well built. using the product in a utility room for a washer and dryer. surge protector plugs directly into the outlet, so very easy to use.
Nicely made and I assume good electronics and protection, but the wall plug broke internally on three identical units I purchased. Bad design, no excuse. Don't buy it. Instead get the version with a cord attached.
Answer: The manual clearly warns against connecting this to an ungrounded unit. An ungrounded outlet is not only a safety risk to what you plug in it, but also completely negates any benefit of a surge protector.