The 18th Edition of the IET Wiring Regulations has changed the focus for the electrical industry, impacting installation practices particularly around final distribution and cable containment.
Residual Current Devices will now be required in more instances following the revision of Regulation 411.3.3. Schneider Electric offer RCBOs and RCCBs across our full circuit protection range including Acti9 and iKQ distribution boards and Easy9 and Resi9 consumer units. RCD protected wiring devices should also be considered for localised protection, such as our Exclusive RCD socket outlets.
The 18th Edition has brought a redraft of Section 443, which includes a focus on surges caused by switching overvoltage as well as lightning. The use of Surge Protection Devices is now recommended in almost all installations, as the cost of equipment at risk may outweigh the cost of the additional protection. Our Easy9 range is 18th Edition ready with SPDs available separately or as part of a configured unit.
A new Regulation (421.1.7) has been introduced around Arc Fault Detection Devices, recommending their installation in AC final circuits of a fixed installation to provide additional protection against fire caused by arc faults. Schneider Electric will offer a 25A Single Phase compatible device to support final circuit protection in the first quarter of 2019, with a 32A device following later.
The scope of Regulation 521.11.201 has also been extended and now requires that fire resistant supports be used throughout the installation and not just in escape routes, to ensure wiring systems are supported against premature collapse in the event of fire. Whilst not every fixing must be metal, there must be an adequate number in place to support against premature collapse. Schneider Electric’s cable support offering includes fire safety clips, conduit saddles and LSF clips and saddles. The range will be expanding in 2019 to include metal cable clips.
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