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The LEVITON 16P21-UG is a male single-pole protective cap rated NEMA 3R and finished in green. It fits over exposed male plug contacts to shield them from moisture, dust, and incidental contact when the plug is not in use. The NEMA 3R enclosure rating means it is suitable for use in locations exposed to falling rain and sleet, making it appropriate for both indoor and outdoor service applications. The cap is CSA Certified and UL Listed, meeting common North American electrical safety standards. Electricians and electrical contractors install this type of cap as a safety measure on disconnected plugs during service, maintenance, or storage.
This protective cap is used in commercial and residential electrical systems wherever male plugs are left disconnected and require protection from environmental exposure. It is specifically designed for use with a corresponding female plug, covering the energized or de-energized male contacts to reduce shock and contamination risk. Typical install scenarios include job site power distribution, temporary power setups, and maintenance lockout situations where plug safety is required.
Designed for use with a female plug. Verify plug configuration and NEMA rating match before installation.
Installation of plug caps should be performed by a licensed electrician in accordance with applicable NEC requirements. Always verify the circuit is de-energized and locked out before handling exposed plug contacts. Inspect the cap for cracks or deformation before each use. Do not force the cap onto a plug with damaged or corroded contacts.
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