Periodic Inspection and Testing
In Part 6 Chapter 62 of the 17th Edition BS 7671 we find guidance on completing a periodic inspection and test on an existing electrical installation. Section 621: 621.1contains the where, why and 621.2 to 612.4 is all of the whats and the who is mentioned in 621.5 Section 622: 622.1 relates to the frequency … Read more