Article 406

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Receptacles, Cord Connectors, and Attachment Plugs (Caps) 406.8 Receptacles in Damp or Wet Locations The word “outdoors” was deleted from this rule. The effect? All 15 and 20A 125V and 250V receptacles installed in a wet location (indoor or outdoor) must be within an enclosure that is weatherproof when an attachment plug is inserted. (B) Receptacles in Wet Locations. (1) 15 and 20A Receptacles. All 15 and 20A 125V and 250V receptacles installed in a wet location must be within an enclosure that is weatherproof even when an attachment plug is inserted. Figure 406-2 (2) Other Receptacles. Receptacles rated other than 15 or 20A or having a voltage rating of 208V installed in a wet location must comply with (a) or (b): Figure 406-3 (a) Wet Location Cover. A receptacle installed in a wet location, where the load isn’t attended while in use, must have an enclosure that is weatherproof with the attachment plug cap inserted or removed. (b) Damp Location Cover. A receptacle installed in a wet location for use with portable tools can have an enclosure that is weatherproof when the attachment plug is removed.

Figure 406-2 (Click on image to enlarge) Figure 406-3 (Click on image to enlarge)