What are these holes for on this travel adaptor?












2















I have a standard European travel adaptor. What are the two holes on the top and bottom for?



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europe power







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    2















    I have a standard European travel adaptor. What are the two holes on the top and bottom for?



    image






    europe power







    share|improve this question



























      2












      2








      2








      I have a standard European travel adaptor. What are the two holes on the top and bottom for?



      image






      europe power







      share|improve this question
















      I have a standard European travel adaptor. What are the two holes on the top and bottom for?



      image






      europe power




      europe power






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 hour ago







      D Manokhin

















      asked 2 hours ago









      D ManokhinD Manokhin

      96223




      96223






















          3 Answers
          3






          active

          oldest

          votes


















          4














          All the middle holes are there for accepting various types of ground (earth) pins.



          Specifically, the top two holes are there for British plugs (BS 546, BS 1363), while the bottom two are there for Brazilian, Danish and Swiss plugs. As always, Wikipedia has the gory details:



          https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets






          share|improve this answer



















          • 2





            The lower part of the upper hope looks like it would accept a US plug.

            – phoog
            1 hour ago



















          1














          Various grounding pins.



          Check Wikipedia on plugs and sockets, to see the variation.



          I guess it makes a lot of sense to place the holes similar to what people are used to, and as far as I remember from that list (it's been a while since I spend hours reading through it), all plugs have the grounding pin placed symmetrically in relation to the live pins. And that has resulted in that layout.






          share|improve this answer































            1














            Your adapter is designed to acept a wide range of plug types, unfortunately this also tends to mean it accepts none of them well. The "for export only" label doesn't inspire confidence either.



            The holes you have circled in red are to accept the earth pins of the aforementioned wide variety of different plug types. Exactly what is hard to tell from the photo but I'm pretty sure at least UK, US and Australian plugs are supported by that hole combination.



            Depending on just how crappy the adapter in question is you may or may not find it actually provides an earth connection between the Earth contacts on the Schuko style plug and the earth pin holes in the socket.






            share|improve this answer
























            • proper British sockets have a mechanical lock that prevents anything from being inserted into the live and neutral before the (longer) grounding prong makes contact. this is probably absent here too.

              – dlatikay
              11 mins ago













            Your Answer








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            3 Answers
            3






            active

            oldest

            votes








            3 Answers
            3






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            4














            All the middle holes are there for accepting various types of ground (earth) pins.



            Specifically, the top two holes are there for British plugs (BS 546, BS 1363), while the bottom two are there for Brazilian, Danish and Swiss plugs. As always, Wikipedia has the gory details:



            https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets






            share|improve this answer



















            • 2





              The lower part of the upper hope looks like it would accept a US plug.

              – phoog
              1 hour ago
















            4














            All the middle holes are there for accepting various types of ground (earth) pins.



            Specifically, the top two holes are there for British plugs (BS 546, BS 1363), while the bottom two are there for Brazilian, Danish and Swiss plugs. As always, Wikipedia has the gory details:



            https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets






            share|improve this answer



















            • 2





              The lower part of the upper hope looks like it would accept a US plug.

              – phoog
              1 hour ago














            4












            4








            4







            All the middle holes are there for accepting various types of ground (earth) pins.



            Specifically, the top two holes are there for British plugs (BS 546, BS 1363), while the bottom two are there for Brazilian, Danish and Swiss plugs. As always, Wikipedia has the gory details:



            https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets






            share|improve this answer













            All the middle holes are there for accepting various types of ground (earth) pins.



            Specifically, the top two holes are there for British plugs (BS 546, BS 1363), while the bottom two are there for Brazilian, Danish and Swiss plugs. As always, Wikipedia has the gory details:



            https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 1 hour ago









            jpatokaljpatokal

            114k17351512




            114k17351512








            • 2





              The lower part of the upper hope looks like it would accept a US plug.

              – phoog
              1 hour ago














            • 2





              The lower part of the upper hope looks like it would accept a US plug.

              – phoog
              1 hour ago








            2




            2





            The lower part of the upper hope looks like it would accept a US plug.

            – phoog
            1 hour ago





            The lower part of the upper hope looks like it would accept a US plug.

            – phoog
            1 hour ago













            1














            Various grounding pins.



            Check Wikipedia on plugs and sockets, to see the variation.



            I guess it makes a lot of sense to place the holes similar to what people are used to, and as far as I remember from that list (it's been a while since I spend hours reading through it), all plugs have the grounding pin placed symmetrically in relation to the live pins. And that has resulted in that layout.






            share|improve this answer




























              1














              Various grounding pins.



              Check Wikipedia on plugs and sockets, to see the variation.



              I guess it makes a lot of sense to place the holes similar to what people are used to, and as far as I remember from that list (it's been a while since I spend hours reading through it), all plugs have the grounding pin placed symmetrically in relation to the live pins. And that has resulted in that layout.






              share|improve this answer


























                1












                1








                1







                Various grounding pins.



                Check Wikipedia on plugs and sockets, to see the variation.



                I guess it makes a lot of sense to place the holes similar to what people are used to, and as far as I remember from that list (it's been a while since I spend hours reading through it), all plugs have the grounding pin placed symmetrically in relation to the live pins. And that has resulted in that layout.






                share|improve this answer













                Various grounding pins.



                Check Wikipedia on plugs and sockets, to see the variation.



                I guess it makes a lot of sense to place the holes similar to what people are used to, and as far as I remember from that list (it's been a while since I spend hours reading through it), all plugs have the grounding pin placed symmetrically in relation to the live pins. And that has resulted in that layout.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 1 hour ago









                HenrikHenrik

                2,3891415




                2,3891415























                    1














                    Your adapter is designed to acept a wide range of plug types, unfortunately this also tends to mean it accepts none of them well. The "for export only" label doesn't inspire confidence either.



                    The holes you have circled in red are to accept the earth pins of the aforementioned wide variety of different plug types. Exactly what is hard to tell from the photo but I'm pretty sure at least UK, US and Australian plugs are supported by that hole combination.



                    Depending on just how crappy the adapter in question is you may or may not find it actually provides an earth connection between the Earth contacts on the Schuko style plug and the earth pin holes in the socket.






                    share|improve this answer
























                    • proper British sockets have a mechanical lock that prevents anything from being inserted into the live and neutral before the (longer) grounding prong makes contact. this is probably absent here too.

                      – dlatikay
                      11 mins ago


















                    1














                    Your adapter is designed to acept a wide range of plug types, unfortunately this also tends to mean it accepts none of them well. The "for export only" label doesn't inspire confidence either.



                    The holes you have circled in red are to accept the earth pins of the aforementioned wide variety of different plug types. Exactly what is hard to tell from the photo but I'm pretty sure at least UK, US and Australian plugs are supported by that hole combination.



                    Depending on just how crappy the adapter in question is you may or may not find it actually provides an earth connection between the Earth contacts on the Schuko style plug and the earth pin holes in the socket.






                    share|improve this answer
























                    • proper British sockets have a mechanical lock that prevents anything from being inserted into the live and neutral before the (longer) grounding prong makes contact. this is probably absent here too.

                      – dlatikay
                      11 mins ago
















                    1












                    1








                    1







                    Your adapter is designed to acept a wide range of plug types, unfortunately this also tends to mean it accepts none of them well. The "for export only" label doesn't inspire confidence either.



                    The holes you have circled in red are to accept the earth pins of the aforementioned wide variety of different plug types. Exactly what is hard to tell from the photo but I'm pretty sure at least UK, US and Australian plugs are supported by that hole combination.



                    Depending on just how crappy the adapter in question is you may or may not find it actually provides an earth connection between the Earth contacts on the Schuko style plug and the earth pin holes in the socket.






                    share|improve this answer













                    Your adapter is designed to acept a wide range of plug types, unfortunately this also tends to mean it accepts none of them well. The "for export only" label doesn't inspire confidence either.



                    The holes you have circled in red are to accept the earth pins of the aforementioned wide variety of different plug types. Exactly what is hard to tell from the photo but I'm pretty sure at least UK, US and Australian plugs are supported by that hole combination.



                    Depending on just how crappy the adapter in question is you may or may not find it actually provides an earth connection between the Earth contacts on the Schuko style plug and the earth pin holes in the socket.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 1 hour ago









                    Peter GreenPeter Green

                    5,3501326




                    5,3501326













                    • proper British sockets have a mechanical lock that prevents anything from being inserted into the live and neutral before the (longer) grounding prong makes contact. this is probably absent here too.

                      – dlatikay
                      11 mins ago





















                    • proper British sockets have a mechanical lock that prevents anything from being inserted into the live and neutral before the (longer) grounding prong makes contact. this is probably absent here too.

                      – dlatikay
                      11 mins ago



















                    proper British sockets have a mechanical lock that prevents anything from being inserted into the live and neutral before the (longer) grounding prong makes contact. this is probably absent here too.

                    – dlatikay
                    11 mins ago







                    proper British sockets have a mechanical lock that prevents anything from being inserted into the live and neutral before the (longer) grounding prong makes contact. this is probably absent here too.

                    – dlatikay
                    11 mins ago




















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