NICEIC Domestic InstallerGuides
Straight answers to common questions
Short guides to the things customers ask us about most, written to BS 7671:2018+A4:2026, the current 18th Edition of the Wiring Regulations.
Earth fault loop impedance explainedWhy electricians measure Zs and Ze, and what the limits in BS 7671 mean for your installation.
Bathroom electrics: common questionsCan you have a socket, a switch, a fan or a light over the bath? Plain answers from Section 701.
Bathroom zones under BS 7671How zones 0, 1 and 2 are measured, and the RCD and bonding rules that come with them.EICR codes explainedWhat C1, C2, C3 and FI mean on your report, and which ones you must fix.
IP ratings: what the numbers meanReading the two digits on a fitting before you put it in a bathroom or garden.What is an RCD?The life-saving device in your consumer unit, and why older boards often lack one.Still got a question?
Call us. Advice over the phone is free, and we will tell you honestly whether you need an electrician at all.