Does this device need to be plugged into a grounded (three prong) outlet or will it fit an older polarised (two prong) outlet?
1888601
It is a three pronged plug and I believe it must go directly into the wall (not through a power-strip for instance). Check the vendor site for more details.
1888602
It comes with grounded cord and since it has surge protection might assume the ground connection is involved that protection but I am not electrical expert.
1888603
The powernet 300 should be plugged into it's on 3 prong grounded outlet. One of its purposes is its capability to serve as a surge protector as well.
672119
It may depend on how your outlet is configured. All of my outlets are horizontal with the two prong and ground holes facing the same direction. I have the Surge Protector on the right side (maybe your top outlet), and there is enough room for another three prong (grounded) plug to fit in the left side (maybe your bottom outlet). In your scenario, this is assuming that the third prong (grounded) hole is on the bottom for each outlet. Now if you are only plugging in a two prong in the other outlet, this appears to be a non-issue. Hope this helps!
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.
1304377
It's a regular household non grounded 2 prong plug.. I would think you could get a 3 prong grounded adapter for about a dollar at any hardware store(Homedepot Lowes..
1949098
It is 2 pronged, and yes they are polarized. The wider of the 2 prongs being the neutral as it should be. There is no 3rd prong for ground.
1400668
It has a three pronged plug... I would recommend you use it on a grounded outlet.
38009
It doesn't seem to block the upper outlet for a normal 3 prong grounded plug. A wall wart type plug might be a problem, but a normal plug fits in the upper outlet hole with the unit plugged in the lower hole. Oh, and it does work upside down, as elektrodragon mentions below. One of my outlets is switched, so I have it in the upper non switched outlet 'upside down' and a lamp plugged in the bottom outlet.
1594579
It is a 3-prong. It is a grounded outlet, so it has to have 3-prong. It is a great outlet.
571531
Sorry, my first reply was incorrect. Now that I am home, I see the plug, indeed, is 3-prong.
2010407
It does not have 3 prong plug. How do I know if its UL listed? What does that mean?
350505
It has three 2-pronged sockets. You'll need to get a grounded-socket adapter for 3-pronged plugs.
986940
Mine came with a regular three-pronged plug for a 110 volt outlet. I just plugged it into an existing standard socket.
44292
Comes with standard grounded plug (3 prong) and should be plugged into a grounded and GFI protected outlet. The GFI because this is outside and can be in/near water.
2186935
No idea what this question has to do with the product, but, yes, to function properly a surge protector needs to be plugged into a grounded outlet (hence the three prong plug).
1723458
We think you need 2 Prong to 3 Prong Grounding Adapter, Amazon ASIN # B003XDF2H2 "Grounding Adaptor - 2 Pack"
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.
1351033
I'm able to plug in a three prong (grounded extension cord) in the other outlet. It's a tight fit.