Unlike cable shielding, which is often braided or a foil wrap design, the armor shield is wound around the cable, giving it a corded, corrugated appearance. … And some companies’ armored cables, such as Mencom, use a woven flexible stainless-steel design. A big difference in the three designs is in how they are ground.
What is armoured cable?
In electrical power distribution, armoured cable usually means steel wire armoured cable (SWA) which is a hard-wearing power cable designed for the supply of mains electricity. … Armouring is also applied to submarine communications cables.
When should I use Armoured cable?
To put it in context, typically armoured cables would be used when you require the cable to be buried directly underground, for outdoor installation or in tunnels. There may be instances where the ground is opened up again, and in the process, a spade or mechanical excavator may hit the buried cable by accident.
What is the difference between Armoured and unarmoured?
An armored cable is protected from mechanical damage, as its name suggests, while an unarmored cable is not protected. … The only thing that distinguishes armored cable from unarmored cable is that the former has an additional optical cable outer protective layer.
Can you bend 10mm armoured cable?
It is pretty rigid, but can be bent – it may not sit very flush round the bend, but will definitely do a 90 degree bend.
Does armoured cable bend?
Interlocking armoured cables may be bent around a radius during installation. The radius of the curve of the inner edge of the bends shall be at least 6 times the external diameter of the armoured cable.
What does unarmoured mean?
: not equipped with defensive or protective covering (such as steel plating) : not armored an unarmored vehicle unarmored infantrymen.
Is armoured cable heat resistant?
Answer: Normal steel wire armoured (SWA) cables, either PVC sheathed (BS 5467), or the type having low emission of smoke and corrosive gases when affected by fire (BS 6724), do not have a fire resisting property.
What is a 3 core cable?
3 core cable is comprised of live, neutral and earth conductors, suitable for ‘Appliance Class I’ (connectivity to earth). … It is important to check your Appliance Class with your qualified electrical contractor.
What are cable cleats?
‘Cable cleat’ according to IEC 61914 defined as: “A device designed to provide securing of cables when installed at intervals along the length of cables.” … Where declared, cable cleats provide resistance to electromechanical forces.”
How do you bend Armoured cable?
Join the two inner holes by drilling or chipping out the brick between them. Then drill and chip the angle on the outside(whichever way you need to go). Your cable can then come down, in at the angle, straight through to outside and off in the other angle, as you have removed all the brick in the angle required.
Is it safe to bend wires?
Distinguished. You can bend wires back on them self, complete U-Turn, theres no harm at all, just so long as the copper wire strands dont break inside.
What is the minimum bending radius of an Armoured sheathed cable?
Interlocked Armored Cable, All Voltages:
The minimum bending radius for cables with shielded conductors is twelve times the diameter of one phase conductor or seven times the overall diameter, whichever is greater.
How many times can you bend copper wire?
300.34 Conductor Bending Radius. The conductor shall not be bent to a radius less than 8 times the overall diameter for nonshielded conductors or 12 times the overall diameter for shielded or lead-covered conductors during or after installation.
What is PVC cable?
PVC (Polyvinyl chloride) is widely used in electrical cable construction for insulation, bedding and sheathing. … Cable with a PVC insulation or sheathing is flame retardant, which is an important consideration for electric cables in most applications.
What is the use of cables?
Electrical cables are used to connect two or more devices, enabling the transfer of electrical signals or power from one device to the other. Cables are used for a wide range of purposes, and each must be tailored for that purpose. Cables are used extensively in electronic devices for power and signal circuits.
What is XLPE cable?
XLPE cable stands for cross linked polyethylene cable. It is a hydronic tubing manufactured from polyethylene plastic. XLPE features a 3D molecular bond structure and shape memory characteristics.
How long does Armoured cable last?
The sheath of SWA is PVC. Life expectancy underground is from 20 to 50 years, depending on how much use is made of the cable.
What is 4mm Armoured cable used for?
4mm x 3 Core Armoured Cable is a form of SWA Armoured Cable that is commonly used for mains electrical supply. Common uses for this cable include the following: Sockets & Switches in a shed or outhouse. External Pond Switches & Lighting circuits.
Can I use armouring as Earth?
Armouring: Steel Wire Armour (SWA) used for mechanical protection. That way the cable can withstand higher stresses, be buried directly and used in external or underground projects. The armouring is usually connected to earth and can be used as the CPC (as described above).
Where are cable cleats used?
What Are Cable Cleats? Cable cleats are used to fix, clamp and support cables – cleats provide effective short circuit protection, support and retention to LV, MV and HV power cable systems when installed at intervals to circuits to secure electrical installations.