John Whitfield Purpose: A practical, no-nonsense handbook for understanding and carrying out initial verification and periodic inspection & testing of electrical installations. It is specifically aligned with BS 7671 (IET Wiring Regulations) and the City & Guilds 2391 series qualifications.
Title: The Electrician's Guide to Inspection, Testing, and Verification (often shortened to John Whitfield's Electrician's Guide ) john whitfield electricians guide