ISO/TR 52000-2:2017 refers to the overarching EPB-standard, ISO 52000‑1[1]. It contains information to support the correct understanding, use and national implementation of ISO 52000‑1. This includes: - explanation on the procedures and background information and justification of the choices that have been made; - reporting on validation of calculation procedures given in the standard; - explanation for the user and for national standards writers involved with implementation of the set of EPB standards, including detailed examples.