Clear, practical guide to outlet boxes and electrical terminations per NEC 2017, including box fill calculation steps, grounding rules, and a site-ready checklist. The Group's environmental commitment is centred on 3 guiding lines: taking on board environmental management in the running of its industrial sites, reducing the environmental impact of its products by eco-design, providing environmentally friendly solutions that contribute to energy savings. If it's done poorly, you risk short circuits, fire hazards, or system failure. Done right, it ensures safety, compliance, and long-lasting performance. In this guide, we'll break down everything you need to know to install. Due to the publication of BS EN 60445 in 2017, which was between the cut-off date for new work and the publication date for BS 7671:2018, it's necessary to amend Table 51. In BS EN 60445:2017, the functional earthing conductor is identified by the colour pink. Regulation. Neutral conductors shall not be used for more than one branch circuit, for more than one multiwire branch circuit, or for more than one set of ungrounded feeder conductors unless specifically permitted elsewhere in this Code. 4 for information on common neutrals. Always. Detection Device (AFDD). Should the arc reach certain parameters, the device will disconnect, extinguishing the a.