whats the difference between a 110 outlet and a 120 outlet and do they have different outlets ?

we are trying to hook up our spa we bought used and cant see how they had it hooked up

6 Answers

  • Anonymous
    1 decade ago
    Favorite Answer

    There is no difference in the two. Originally the voltage in the home voltage was 110 volts. As the power company's learned they could stay with in government safety guide lines and run up to 130 volts and use a smaller thickness wire in the power lines leading to our homes. The average voltage being used in our homes to day is around 120-130 volts but all of the out lets are the same and all modern electric house hold items run fine on anything between 110 volts to 135 volts.

    But be sure the spa isn't a 220 volt. If it heats the water it most likely is 220V. The 220Volt out lets wont let you plug a 120 volt plug in to it. BUT is there is not a plug on it and the previous owner has not plug on it be sure to check the box on the side of the spa and see what voltage it is rated at.

    Above all be sure you have a ground on the 120 volt as well as the 220V. ALL SO be sure to have a "Ground Fault protection " The circuit will detect any voltage that leaking and might get to the water and shock you may be to death. The 120 volt ones can be got at your local hard ware store for $20 or so and does not require any special wiring, It simply plugs in to the plug receptacle and the spa plugs in to that.

    Electronics have been a life long Hobie of mine but now that I am retired I have kept my Radio operator license as a technician,

    Federally license Amateur radio Technician

    Source(s): Federally license Amateur radio Technician
  • 7 years ago

    the best answer is wrong in some of it. Still it was ok. Lets start at the beginning. 110 volt outlet is now 120 volt outlet today. Todays 120 volt outlet has one slot longer than the other. The 110 volt outlet did not. We have not used 110 volts since WWll. Back in the good ol days 110 volt devices worked either way you plugged them in. Although internally the devices really needed to be properly polarized to get rid of the hum and to make the metal chassis of the tube radio grounded. If you did not plug the device in the proper way, and there was no way of telling you could get a nasty shock just by touching a metal surface on the radio. So that's why new outlets were invented and plugs to match, so that when you plug your device in it would be grounded for safety. And to add additional safety the third hole was invented, which goes to earth ground, a rod by your electrical outlet box outside. The United States increased the power to 120 volts after WWll, or maybe even during. The increased voltage allowed the power companies to use less diameter wire if they wanted to and besides that they would loose less power in just the transmission lines, because they eat up power too. Due to Ohms law, this is the reason they send high voltage across country as the loss is less. Now back to 110 volt vs 120 volt. Today's voltage is 120 volt average. You might see a bit more 122 volts or even a bit more depending on which end of the transmission line you live on. This is 120 vac (volts alternating current) of course not DC. The same thing goes for 220 volts and 240 volts. 220 vac has not been used since WWll but for some reason people still want to say 110 and 220. maybe it sounds better than 120-240. drives me nuts when people say 110 or 220.

    I know what they mean, they know what they mean but they don't know what it really is. It is 240 volts ac not 220 volts ac. Now to add misery to all this, the old radios might burn out a tube if you dont drop the voltage down before you plug one in. They were made to work on 108-110 volts ac. The tubes in the radios need to light up. Instead of using a transformer for the voltages they would put them in series like the old Christmas lights were. One tube goes out they all don't work. The tubes had numbers to start with in the tube name such as 6J6 or 12SK7. those numbers indicated how many volts it would take to light them up. ^ volts for the 6J6 and 12 volts for the 12SK7. total that would be 18 volts. keep adding tubes in the proper numbers until they reached 110 volts. So by plugging an old radio into 120 volts might light the tubes or even a single tube in it beyond its rating and poof it burns out the filament.

    Now to answer your question, you can only buy a 120 volt outlet not a 110 volt one. The 110 volt outlet has been modified to be in specs with the UL listing for safety to today's standards and the power company has raised the voltage to 120 volts about the time of WWll. So tell people to quit saying 110 and 220. Now that you know it will drive you nuts too.

  • 4 years ago

    110 Outlet

  • John R
    Lv 6
    1 decade ago

    NONE! The differrence is Between a 110 outlet and a 220 outlet.

  • How do you think about the answers? You can sign in to vote the answer.
  • 5 years ago


    well, say you needed to start your car engine with electric current.

    If you were to plug it in to a 110v outlet and the engine would take 5 seconds to start but if you were to try on a 220v outlet the your engine would only take about 2.5 seconds.

    For many years we do not utilize 110v and 220v,we have only 120v and 240v with a third wire called ground wire for safety in all circuits.

  • 5 years ago

    10 volts! LOL

Still have questions? Get your answers by asking now.