| 摘要 |
A receptacle is provided with a rotatable protective cap, which is divided into two symmetrical cover plates so as to expose a power supply outlet if the receptacle proper for insertion of a load plug. When the receptacle is at rest, the cap is rotated to shade the power supply outlet so as to avoid ingress of foreign material and moisture that might cause electrical leakage, and also avoid possible contact of human fingers with the live parts of the receptacle that might cause fatal electrical shock.
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