polarized plug

polarized plug

[′pō·lə‚rīzd ′pləg]
(electricity)
A plug that can be inserted in its receptacle only when in a predetermined position.
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References in periodicals archive ?
When used with a polarized plug, these outlets provide protection by keeping electrical current directed.
95, a two-prong polarized plug that controls appliances and non-incandescent lamps sells for $16.
Each string has a regular two-prong polarized plug at one end, 15 or 25 C-7 or C-9 lights, and a receptacle plug at the other end so another set can be added in line.
A low center of gravity provides stability, a finger-proof mesh grille covers the heater, and a high-temperature safety shut-offend polarized plug make the unit safer for everyone in the household.
It also has many safety features, including a tip-over safety switch, built-in handle, 8-foot cord with polarized plug, and heavy-duty legs.
polarized plugs, three-wire circuits with the grounding wire and plug, and ground fault circuit interrupters.
Use cords that have polarized plugs or grounded three-pronged plugs to reduce the risk of shock.
Non-grounded or improperly polarized plugs and outlets.
polarized plugs with one blade slightly wider the other, or grounded