Na versão de 2008 do National Electrical Code, os substitutos não precisavam ser TR. No entanto, agora os receptáculos devem ser substituídos por receptáculos TR, se os receptáculos TR forem necessários nesse local.
Por mais próximo que eu possa dizer, quase todos os receptáculos das unidades de habitação devem ser TR a partir do código de 2014.
National Electrical Code 2014
Chapter 4 Equipment for General Use.
Article 406 Receptacles, Cord Connectors, and Attachment Plugs.
406.4 General Installation Requirements.
(D) Replacements. Replacement of receptacles shall comply with 406.4(D)(1) through (D)(6), as applicable. Arcfault circuit-interrupter and ground-fault circuit-interrupter type receptacles shall be installed in a readily accessible location.
(5) Tamper-Resistant Receptacles. Listed tamper-resistant receptacles shall be provided where replacements are made at receptacle outlets that are required to be tamper-resistant elsewhere in this Code.
406.12 Tamper Resistant Receptacles.
(A) Dwelling Units. In all areas specified in 210.52, all nonlocking-type 125-volt, 15-and 20-ampere receptacles shall be listed tamper-resistant receptacles.