earthing

Ask the Expert: Earth Electrode Installations

In this Ask the Expert video, Scolmore Group answers the question: What are the provisions for installing an earth electrode on supply to an outbuilding? Scolmore Group’s Darren Staniforth and Jake Green will be going over the rules and regulations surrounding whether an earth electrode is required on an electrical supply to an outbuilding. They will look at different constructions of outbuildings to outline when an earth electrode becomes necessary.…

How do I determine an extraneous conductive part?

This article provides some simple guidance on how to identify extraneous conductive parts to help you avoid the unnecessary installation of protective bonding conductors. It should be appreciated that exposed metallic parts not forming part of the electrical installation are not always extraneous conductive parts as defined in Part 2 of BS 7671. Therefore, as explained in this article, to avoid the unnecessary installation of protective bonding conductors, it is important…

An introduction to earthing and bonding

Earthing and bonding are two very different, but often confused, methods of preventing electric shock. The principal of earthing is to limit the duration of touch voltages if you were to make contact with an exposed conductive part. The earth creates a safe route for the current to flow instead of causing electric shock. The purpose of bonding is to reduce the risk of electric shock if you find yourself…