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POSITIVE and NEGATIVE are Direct Current (DC) terms In Alternating Current (AC) terms it is: HOT-LEG (brass colored screw) and NEUTRAL (silver colored screw) On polarized plugs 120volts, the ...


Buy a “polarized” replacement plug, that is, one that has a normal prong and a wide one. The neutral line on the lamp cord is the one that’s odd; it’ll have ribbing, a sharp ridge or printing on it. If the cord is translucent, the neutral is silver. The wire that goes to the narrower prong has a smooth, plain surface or is gold in color.


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This means the plug has a small blade for the hot wire and a wide blade for the neutral wire, and the wires feeding those blades should not be reversed when you put a new plug on. Always use a polarized plug for a lamp, extension cord or any other cord that's polarized to begin with.


This is AC (Alternating Current) so it isn't "positive" and "negative" but "hot" and "neutral". On a polarized plug, there is one wide blade and one narrow blade. The wide blade is neutral and the narrow blade is hot. The ribbed (white if there are colors) is neutral; the smooth wire (black if there are colors) is hot.


A nonpolarized power cord has prongs of the same size. A polarized power cord has prongs of different sizes. You can only use a polarized plug with a polarized outlet. Polarization is a way of making sure a switched light or appliance isn't energized and can't shock you when the switch is off.


As has been said, a polarized plug is "hot" on the small blade and "neutral" on the big blade and the big blade is at the same electrical potential as the ground. Which is why you don't want to defeat the big and little sides and you should always plug them in the correct "polarity." As yellowfiero stated, it's a safety feature.


Replacing a damaged plug is easy, but for safety you have to follow proper wiring rules, especially when wiring a polarized plug. Replacing a damaged plug is easy, but for safety you have to follow proper wiring rules, especially when wiring a polarized plug. Skip links. ... How to Tell Negative and Positive Wire.


Because AC current changes direction many times a second, you can't speak of "positive" and "negative" terminals. Instead, one of the wires is the "hot" wire, and the other is the "neutral" or "return" wire. If you were to touch only the neutral wire, you wouldn't feel anything, but you would get a shock if you touched only the hot wire. Fo...


These are unpolarized plugs. Older lamps and other devices may well have unpolarized plugs, and some modern electronic devices, such as chargers on computers or cell phones, also have simple unpolarized plugs. It is generally not a problem to plug in an unpolarized plug to a polarized outlet in whatever way it will fit.