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A polarized plug is found at the end of an electrical cord on an appliance and on some heavy-duty indoor and outdoor extension cords. Electrical appliances.


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A power cord, line cord, or mains cable is an electrical cable that temporarily connects an appliance to the mains electricity supply via a wall socket or extension.


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Polarized electrical plugs are a safety feature, designed to make sure that appliances connect in the safest possible way to house circuits.


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A power cord, line cord, or mains cable is an electrical cable that temporarily connects an appliance to the mains electricity supply via a wall socket or extension.


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Lording said: >>But offhand I can't think of how it could be worse than it was before with the non-polarized plug. It could be "worse" if you put on a polarized cord.


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Lording said: >>But offhand I can't think of how it could be worse than it was before with the non-polarized plug. It could be "worse" if you put on a polarized cord.


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A power cord, line cord, or mains cable is an electrical cable that temporarily connects an appliance to the mains electricity supply via a wall socket or extension.


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polarized power cord meaning

Sign up to join this community. Bimpelrekkie Bimpelrekkie 67k 2 2 gold badges 74 74 silver badges bronze badges. Since mains voltage is AC, the "polarization" can only refer to the difference between the live and neutral wires. Sign up using Email and Password. Question feed.{/INSERTKEYS}{/PARAGRAPH} So you can safely use a non-polarized lead, the TV doesn't care at all assuming it is designed properly according to modern safety standards. I have an LED television that came with a polarized version of one of these cables. Email Required, but never shown. Featured on Meta. Home Questions Tags Users Unanswered. However, the alternative non-polarized Receptacle NEMA P is available but it's corresponding receptacle the NEMA R has been prohibited in new construction in the United States and Canada since , but is still allowed for repairs to older homes. Why is this power cable sometimes polarized and sometimes not? How Stack Overflow hires engineers. Ask Question. The Overflow We heard you like lists. Feedback post: New moderator reinstatement and appeal process revisions. Depending on how your mains is wired which depends on your country the neutral wire isn't supposed to have a voltage relative to ground. Can you answer my question? Linked 7. These devices do require the ground connection to make sure that the metal case is safe to touch. Thank you. But I have a longer non-polarized version. Although line and neutral return noise tends to cancel out, in some situations where it is not uniform noise might not cancel yet still be below unintended radiation thresholds or may be above on grandfathered equipment not qualified. Active Oldest Votes. Sign up or log in Sign up using Google. Post as a guest Name. Note that there are also mains devices like toasters and computers which have 3-pin mains inputs. The best answers are voted up and rise to the top. Would it harm either myself or the TV to use a non-polarized version of the cable? However, this cannot be relied upon so it is unsafe to assume the neutral is "safe to touch". The non-polarized plug allows the user to swap orientation in case of a difference in high frequency noise buzz that can sometimes be unbalanced or have inputs that are unbalanced such that swapping leads of the unintended conductor or receiver can reduce interference in audio systems. Modern power supplies like the one in your TV do not care or even notice how you connect live and neutral so it does not matter how you connect them. New post lock available on meta sites: Policy Lock. There may be other reasons for using a polarized plug that improve margin above required limits, but are not critical. Additional information follows Only very old equipment 's and before might not meet the modern safety standards. Sign up using Facebook. It only takes a minute to sign up. That in turn makes it rather pointless to make a difference between live and neutral so obeying a certain "polarity" is also pointless. Related 1. {PARAGRAPH}{INSERTKEYS}Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. Viewed 5k times. However this is a poor man's solution to audio EMC and not often needed or explored. It is safe for consumer goods that are double-insulated that do not require grounded polarized plugs for Vac line, Neutral nor earth ground. Bonus: Do these cables have a name? You can recognize "double insulation" from the symbol consisting of two squares: Your new TV should have this symbol! Asked 2 years, 1 month ago. The Overflow Blog. Given that the female end appears to be reversible, why are some of them polarized? What may be curious to some is your cable has a polarized male plug but a non-polarized the C7 adapter, so the above tweaks to EM compatibility can still be tried reversing line and neutral. Or do you agree with Bimpelrekkkie that it does not? Why still use them? If none , it does not matter. Active 2 years, 1 month ago. Hot Network Questions. When in doubt, check for the logo, if it is there then "mains polarity" should not matter. You can recognize "double insulation" from the symbol consisting of two squares:. This is the polarized version of the C7 female plug.