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?
160513
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.
160514
It will not. I bought this item without checking my house's outlets and the red light came on after pluging it in. The red light never went out. In the manual it says the red light means the device is not working.
160515
The wiring fault indicator will be lit when you plug the Ultrablok into the wall... The indicator will, strangely, turn off when you plug anything else into the Ultrablok. So far it has worked for me, we lost a microwave to a lightning strike (different circuit and not on an Ultrablok) but the projector and game systems (on two different ultrabloks) survived unscathed.
160516
No...because it requires a ground to work correctly.It will plug in & work but you would notice the red fault led light up,&the; manual says that for it to work correct you need a ground.You would be cheating your self & your equiptment for the protection,that's what were looking for.I'am guessing your home has later wireing,which didn't require grounding,like of todays.Sorry too give you the bad news,but for it too really protect & work correct would require a good ground system.And with the cost of electronics we don't want to cheat ourselfs.The parts inside require ground system to work correctly.Good luck,on finding solution. No...because it requires a ground to work correctly.It will plug in & work but you would notice the red fault led light up,&the; manual says that for it to work correct you need a ground.You would be cheating your self & your equiptment for the protection,that's what were looking for.I'am guessing your home has later wireing,which didn't require grounding,like of todays.Sorry too give you the bad news,but for it too really protect & work correct would require a good ground system.And with the cost of electronics we don't want to cheat ourselfs.The parts inside require ground system to work... » Read More No...because it requires a ground to work correctly.It will plug in & work but you would notice the red fault led light up,&the; manual says that for it to work correct you need a ground.You would be cheating your self & your equiptment for the protection,that's what were looking for.I'am guessing your home has later wireing,which didn't require grounding,like of todays.Sorry too give you the bad news,but for it too really protect & work correct would require a good ground system.And with the cost of electronics we don't want to cheat ourselfs.The parts inside require ground system to work correctly.Good luck,on finding solution. « Show Less
160517
I imagine it would but, probably would be better if it was installed on a ground outlet. Do you know if the box the outlet is in is grounded or is this old construction that was originally just a two prong outlet.
41287
Yes, it does accept a three prong grounded extension cord. If you have repaired your extension cord with a commercial three pronged plug I would be afraid it would be to big. My son was out blowing leaves this weekend with an orange 100' residential extension cord and it worked just fine.
970860
It will accept three prong grounded plug, however are your machines compatible with 220V? If they are only 120V then you'll need a voltage transformer such as this:Ceptics 150W Travel Voltage Converter with 3 Outlets + 4 USB inputs - Frustration-Free Packaging
1520898
It is a 3 prong connection. Plugging into a 2 prong adapter may defeat the purpose of the surge protection
162635
Yes, as long as you use a grounded outlet. Some of the outlets are two prong instead of grounded.
489920
I just returned from a month in Italy. Most locations we stayed at had the three hole recepticals but those would accept the two prong adapters. I think it's similar to the US where three holes are grounded two are not. We had no problem using small items like iPhones , iPads, razors, etc. using the two plug adapters. However, we do carry a grounded surge protector just to be safe.
1494171
On the back side there is one 3-prong plug, so it would not fit into a 2-prong (non-grounded) outlet.
1594579
It is a 3-prong. It is a grounded outlet, so it has to have 3-prong. It is a great outlet.
1429823
Hey Melvin, it can be plugged into a grounded three prong electrical outlet, if the outlet has a round grounding port. Also, Google search for "Clint Ober Video's"he explains all about the grounding and checking outlets to make sure they are grounded back to earth. Also using a grounding rod works well.
363141
You might be able to do that, but it won't be safe. Three-pronged appliances need to be grounded for safety reasons (electric shock hazard), but in your setup the appliance will not be grounded. You can get on of these:GE 52149 Handy Switch Grounded Whiteor one of these:TRIPLE PLUG IN CORD SWITCH WITH SAFETY REMINDER LIGHT
1442177
Adding to previous answers, just be aware the outlets are 'rotated' 90 degrees. Three prong plugs work great, but any power adapters will obstruct neighboring outlets.
1882269
In the US, you should be able to plug in two prong cables, power converters, etc. The third prong is for ground, so what ever you plug in with a two prong connector will simply not have a dedicated ground. But that should be ok, not everything needs a ground. If you are not in the US, or your house is not wired with three prong outlets, then you will not be able to use these cables and should return them.
2004595
If the outlet is a grounded 110-120 V/AC receptacle, you shouldn't have any problems.
630946
It works fine on a standard, grounded (3-prong) outlet. It takes about as much power as a coffee pot.
97214
I am not sure.... but be sure your house outlets where you plan to have them is properly grounded or it will not work. otherwise this unit is a life saver
1459327
It has a three prong plug so it is grounded. Other then that you would have to contact the company. I've seen no issues with it so far.
2283055
Yes, the one they shipped to me had a grounded 3 prong plug with about a three foot cord. I have two that are still working under occasional use after several months.Good luck.