ground outlet

ground outlet

[′grau̇nd ‚au̇t·let]
(electricity)
Outlet equipped with a receptacle of the polarity type having, in addition to the current-carrying contacts, one grounded contact which can be used for the connection of an equipment-grounding conductor.
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References in periodicals archive ?
But even this isn't the original ground outlet of the spring.
The minister stressed the importance of developing mutual relations between the two friendly countries in marine and ports field as well as in filed of civil aviation , exchanging flights and expertise and easing difficulties facing the two countries in ground outlets.