Armored cable refers to adding a layer of metal armor to the outer protective layer of the cable to improve the mechanical strength, corrosion resistance and pressure resistance of the cable. Armored cables can be divided into aluminum alloy, galvanized steel strip, stainless steel and other types according to the different armored materials.
Introduction
"Power-16mm-armoured-cable" refers to a type of electrical cable that is 16 millimeters in diameter and features an armored outer layer. This type of cable is commonly used for power distribution and can be found in industrial, commercial, and residential applications. The armor provides additional protection to the cable's internal conductors, which are typically made of copper or aluminum. The armored layer can be made from materials such as steel or aluminum, and it helps to protect the cable from physical damage, moisture, and other environmental factors.
Features
High durability
Mechanical protection: The armor layer is usually made of steel wire or steel belt, which can effectively resist external impact and pressure and is suitable for harsh construction environments. Anti-aging performance: The outer sheath material such as PVC has good anti-aging performance and can maintain its physical and chemical properties unchanged in long-term use.
High safety
Flame retardant performance: Many power-16mm-armoured-cables are made of flame retardant materials, which can prevent the spread of fire when a fire occurs and buy time for personnel evacuation. Waterproof and moisture-proof: The outer sheath and armor layer work together to make the cable have good waterproof and moisture-proof properties, suitable for humid environments such as direct underground burial.
High efficiency
Low resistance: The internal conductor is usually made of high-purity copper with low resistivity, which can reduce the loss during power transmission. For example, the resistivity of high-purity copper can be as low as 0.01724Ω·mm²/m. High current carrying capacity: Due to the large cross-sectional area of the cable (16mm²), it can carry a large current to meet the power supply needs of high-power equipment.
Construction
Insulation material
PVC or XLPE (cross-linked polyethylene) is usually used as the insulation material, which has good electrical properties and high temperature resistance.
Sheath material
The outer sheath is generally made of PVC material, which not only has good mechanical protection properties, but also effectively prevents erosion by moisture and chemicals.
Conductor material
The inner conductor is usually composed of bare copper wire, which is an excellent conductive material that can provide efficient current transmission.
Armor layer
The armor layer is usually made of steel wire or steel belt, which provides additional physical protection for the cable, enabling it to withstand greater external forces and pressures, and is suitable for harsh environments such as direct underground burial.
FAQs
How many amps can 16mm armoured cable take?
16mm x 3 Core SWA Cable Per Metre – 94 amp rated SWA armour cable, designed to carry electrical power to a range of applications and devices. Ordinarily you'd find this cable powering large outhouses, workshops, sheds etc. As it is rated for 94 amps, it is perfect for supplying power over longer distances.
What is the difference between armored cable and SWA cable?
SWA cables use steel wire armour, making them more suitable for applications requiring high mechanical protection. AWA cables, on the other hand, use aluminium wire armour, making them lighter and a preferred choice for installations where weight is a concern, such as power distribution in industrial settings.
What is the maximum current capacity of 2.5 mm armoured cable?
The maximum current capacity of a 2.5 mm² armoured cable can vary depending on the specific type of cable, the insulation material, and the installation conditions. However, for general purposes, the typical maximum current rating for a single-core 2.5 mm² copper conductor with PVC insulation under normal conditions (e.g., clipped direct, in an ambient temperature of 30°C) is around 27 to 32 amperes (A).
What size breaker do I need for a 16mm cable?
At least 64 to 72 amps continuously in 16 mm Cross sectional Area copper cable. Also note: building code may specify 60 amp breaker for this size. You should check local building code to be sure, especially when the public might be served by this construction.
How deep should armoured cable be?
A minimum installation depth of 450mm underground is typically recommended for best practice. This increases to 600mm in locations where there is a higher possibility for potential disturbance.
Can you leave armoured cable above ground?
Of course, you can, but the reason for specifying the extra cost of an armoured cable is to protect it from damage when it is run underground out of sight and may be hit by a spade. For the same reason, there should be marker tape buried just below the surface to indicate that there is an armoured cable buried deeper.
Does armoured cable need conduit?
Armoured cable does not necessarily need conduit for installation, as the armoring provides mechanical protection and can withstand harsher environments compared to unarmoured cable. However, in some specific situations, such as when routing the cable through areas with high levels of electromagnetic interference, extreme temperatures, or where it might be subjected to chemical exposure, additional protective measures like conduit may still be advisable. Conduit can offer an extra layer of safety and compliance with certain building codes or electrical standards.
Do you need to earth both ends of armoured cable?
As a minimum requirement, the cable will be earthed at least one of its two ends, meaning in the event of a fault or short-circuit the most direct route to ground will be achieved.
Can you put a join in armoured cable?
Armoured Cable Joints are primarily used for joining two separate pieces or lengths of cable together. using a polyutherene, two part resin. The resin itself is containing in a sealed sachet with a clip-on cover for the entry/filling hole.
Can armored cable be direct buried?
Teck 90 or Teck Style armored cables are used in industrial and commercial applications where the environment requires extra protection or durability. These cables can be direct buried and installed in conduit.
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