Although the latest revisions to the 18th Edition Wiring Regulations came into force at the beginning of the year, most contractors are still working to the old rules because the changes only apply to installations designed from January 2019 onwards. Construction will soon begin based on the 2019 designs, here is a recap on cable fixings to ensure that you will be compliant with the new regulations.
Are Plastics Banned?
Plastic cable fixings and plastic cable management have not been banned. They are still a cost-effective way of managing cables. It’s just that they can no longer be used as the sole method of support. Plastic cable ties and clips and plastic cable supports must all be adequately supplemented with metal supports.
Cable Ties – most metal cable ties being used are 316 grade stainless steel, which were designed for use in harsh environments. However, these are costly, hence we launched a more economically priced steel cable tie in different sizes. They can be used for individual cables or cable bundles and suitable for use internally and externally.
Don’t forget that tensioning tools are available. They are designed to neatly cut-off excess metal tie.
Cable Mounts – When replacing plastic tie mounts, there are a few options depending on the method of installation and the size of cable being fitted. Screw or adhesive-fixed mounts can be replaced with a like-for-like metal equivalent. For faster installation, the metal push mount is ideal, it is simply pushed into a 6mm hole, so the likelihood of using incorrect fixings is removed. Our patent pending firesafe tie mount can be used with all cordless nailing tools – the snap-off tab for holding and positioning the mount during installation means there’s no need to change noses.
Cable Clips – Metal versions of the traditional-style nail-fixed clip are available and metal U and F clips can be used to secure cables within plastic trunking or as a standalone fixing. Safe D U clips can be used for securing cables to walls and ceiling voids whilst the Safe D F clips can be easily folded for securing individual cables or cable bundles to walls and ceilings. Remember to fix the D F clip with an all-metal fixing. Single and double metal stag clips are quick and easy to install and are ideal for T&E, FP and alarm cables.
Cable Harness – Metal cable clasps are a cost-effective way of installing cable bundles without the need for cable containment.
They are available in different sizes for either wall or ceiling mounting, cables can be easily added or removed during the installation process.
Once you have selected the most appropriate cable fixings, be mindful that the screws and expansion plugs you use also need to be fire resistant.
For further information on our flameproof range of cable accessories, click here or speak to our sales team today on 0115 922 1585.