Which type of receptacles require tamper-resistant receptacles according to the code?

Tamper-resistant receptacles are specifically required for certain types of installations to enhance safety, especially in environments where children are present. In the case of single or duplex receptacles, which are commonly used for stationary appliances, the code mandates the use of tamper-resistant designs to prevent foreign objects from being inserted into the receptacle. This design inherently adds a layer of safety, reducing the risk of electrical shock or injury that can occur if children attempt to insert objects into standard receptacles.

While receptacles for easily movable appliances may present risks, the emphasis on tamper-resistant receptacles is particularly aimed at permanent installations like those found with stationary appliances where the likelihood of misuse can be higher due to accessibility. Furthermore, while all household plugs and outdoor receptacles pose their own safety concerns, tamper-resistant requirements are specifically focused on receptacles within dwelling units to ensure the highest level of safety for the most vulnerable users.