John Whitfield | Electricians Guide
Title: The Electrician's Guide to Inspection, Testing, and Verification (often shortened to John Whitfield's Electrician's Guide )
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. john whitfield electricians guide