This part of IEC 60695 presents a summary of published test methods that are relevant to determine heat release for electrotechnical products. It represents the current state of the art of the test methods and, where available, includes special observations on their relevance and use. The list of test methods is not to be considered exhaustive, and test methods which were not developed by IEC/TC 89 are not to be considered as endorsed by IEC TC89 unless this is specifically stated. Heat release data can be used as part of fire hazard assessment and in fire safety engineering, as discussed in IEC 60695-1-10 [1] and IEC 60695-1-11 [2]. This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications.