In North America, distribution systems are often of the 4-wire configuration with three phase conductors and one neutral. The neutrals are typically grounded at equipment locations. For systems located in high lightning regions, the neutral is also grounded where line arresters. Our light-ning and surge voltage protection systems are per-fectly matched to one another and to the requirements in the different zones – from the air-termination device, which must arrest the full energy of a lightning strike, through to fine power protection, which eliminates the last voltage. IEC 62305 is the international standard series for protection against lightning, published by the International Electrotechnical Commission. It replaced the earlier IEC 61024 and IEC 61312 series, consolidating lightning protection into a unified four-part framework. Lightning protection component manufacturers, such as us, use the component standards to ensure product compliance and quality. In all cases, the purpose of a high-quality lightning. These nVent products are sold globally under a variety of market-leading brands: nVent ERICO welded electrical connections, facility electrical protection, and rail and industrial products; nVent CADDY fixing, fastening and support products; nVent ERIFLEX low voltage power and grounding.