What is Armoured cable used for?
Commonly known as SWA cable, the steel wire armoured cable is a power and auxiliary control cable, designed for use in mains supply electricity. Used for underground systems, cable networks, power networks, outdoor and indoor applications, and cable ducting.
When should Armoured cable be used?
In this context, armoured cables are most often used for fixed power installations in industrial applications, such as power distribution in a plantroom, where cables may be damaged by maintenance operations, for example. Clause 522.8.
Why is the Armour of cable earthed?
The armour does provide some mechanical protection and it is important that the armour is earthed so that if the cable were penetrated (e.g. by a garden fork), the supply would automatically be disconnected by the protective device under this fault condition.
Can I use SWA as Earth?
The SWA does not need to be earthed as it is not an exposed conductive part.
Do I need to earth both ends SWA?
A good connection at both ends is essential if the SWA is the CPC. The exposed part of the SWA must be earthed if it is not the CPC. Earthing at the supply end can be achieved.
What Colour is Earth on Armoured cable?
and use the black as earth, but it needs green/yellow sleeve. If you use a colour other than brown for a live function (eg a switched live in a lighting circuit) this conductor should be tagged with a brown marker. Simples!
Is GREY wire earth?
The earth core is still identified by the colour combination green/yellow. Three-core-and-earth cable colours changed from red, yellow and blue to brown, black and grey. These harmonised colours have been in use since 31 March 2004 and became compulsory in all new installations from 31 March 2006.
Is black or GREY neutral?
Brown is always L or SL, black is always SL, grey is always neutral.
Do you earth Armoured cable?
Regardless of whether the armouring of a steel wire armoured cable (swa) is employed as a protective conductor or not, it should always be effectively earthed to ensure the requirements of ADS are met.
Is Armoured cable waterproof?
Armoured cable or SWA (steel wired armoured) cable is the accepted standard for underground installations. When the armoured cable terminates at an appliance or junction box a gland is used. You must get the correct size and type of gland for the job at hand. If it is outside the gland must be waterproof.
How do you protect Armoured cable?
Armoured cables and cables having an earthed metal sheath suitable for use as a protective conductor may be buried directly in the ground without further protection, except against corrosion, which may be negated by the provision of a plastic covering.
Is Armoured cable shielded?
The armor has large bending radius, the armor layer can be grounded, and the cable is protected. Armored shielded cables from outside to inside: outer sheath, armor (usually steel belt), inner sheath, shielding layer (copper or copper wire braid), filler, conductor insulation layer, conductor.
How strong is Armoured cable?
It is known as SWA BS 5467 Cable and it has a voltage rating of 600/1000 V. SWA cable can be referred to more generally as mains cable, armoured cable, power cable and booklet armoured cable.
How do I protect my cable outside?
Protection can come from placing the cables in metal conduit, plastic ducting, or where directly buried, through steel wire armouring. Unprotected outdoor cables must, as a minimum, be weather resistant, which includes protection against the typical ambient temperature range, UV light, ozone and water.
What cable do I need for outside?
The choice of cable running to the exterior socket should be, as a minimum, 2.5mm2 twin and earth (TWE) housed in conduit, which could be the mini trunking type or a round design.
What cable is suitable for outdoors?
Outdoor-rated cables are differentiated by their UV-resistant jackets. These types of cables are designed to be used outside, but not buried. Outdoor-rated cables are made to withstand heat and UV rays, and their UV-resistant jackets are either made out of PE or a UV-resistant PVC material.
How do you waterproof outdoor cables?
If you want to waterproof a length of outdoor (or even indoor) electrical cable, silicone sealant is the best protectant to use. Silicone sealant is composed of several different compounds, and some brands need to be mixed before use.
Are outdoor extension cords safe in rain?
Outdoor Extension Cord Usage These types of extension cords of course are great for outdoor lights, outdoor entertainment centers and any cooking needs outdoors, however these can become the most dangerous if damaged. Because these extensions cords are exposed to extreme elements, including extreme heat, snow and rain.
Is heatshrink waterproof?
Is Heat Shrink Tubing Waterproof? Yes, most heat shrink tubing is watertight and will also protect against other moisture and even potentially corrosive liquids.