What is interlocked armor?
Interlocked Armor Interlocking provides for flexibility in the finished product. Most of these cables comply with NEC Type MC (Metal Clad). A PVC jacket is commonly applied over the armor.
What is the difference between armoured cable and armoured cable?
The only thing that distinguishes armored cable from unarmored cable is that the former has an additional optical cable outer protective layer.
What are the different types of armored cable?
There are two types of armoured cables: aluminum wire armour and steel wire armour.
What is armored cable used for?
Armored cables are used in applications where cables will be exposed to mechanical or environmental damage under normal operating conditions. These applications include power circuits in industrial plants, commercial buildings, processing plants and central and substation utility applications.
What does interlock mean in electrical?
An electrical interlock is an interlock that is used to restrict current flow between two or more devices. These types of interlocks use normally open and normally closed contacts to prevent another device from turning on.
What is meant by interlocks?
: to become locked together or interconnected. transitive verb. 1 : to lock together : unite. 2 : to connect so that the motion or operation of any part is constrained by another. interlock.
When should you use armored cable?
Armored cables provide the protection and durability required without the need for electrical conduit, elbows, costly offsets, and conduit couplings. Metal-clad armor resists corrosion, making it suitable for areas exposed to moisture.
Do I need 3 or 4 core Armoured cable?
Three core cable is for Class I or Single Insulated which must have earth connections. 4-Core SWA Armoured Cable are perfect for low voltage or low current signal applications.
What is XLPE armoured cable?
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.
Where can armored cable not be used?
Armored cable cannot be used for direct burial in earth. With minor exceptions, armored cable is also not permitted to be used in hoists or elevators, storage battery rooms, any hazardous locations, in commercial garages and in theaters or similar locations.
What are the three basic methods of interlocking?
The mechanical, push-button, and auxiliary contact interlock are indicated. Push-button interlocking is an electrical method of preventing both starter coils from being energized simultaneously. When the forward button in ill.
What are the different types of interlocking?
Interlockings can be categorized as mechanical, electrical (electro-mechanical or relay-based), or electronic/computer-based.
- Mechanical interlocking.
- Electro-mechanical interlocking.
- Relay interlocking.
- Electronic interlocking.
Does armoured cable need to be in conduit?
Whilst the weight and rigidity of armoured cables can make them hard to handle and time-consuming to terminate, they are essential in applications where unarmoured cables may be prone to damage and require containment protection, i.e.: conduit or trunking.
Does armoured cable need to be earthed at both ends?
Yes, the armour should be earthed at least at the “supply” end. This ensures that anything that penetrates the cable (saw, drill, etc) will be earthed before the live cores are reached, and is therefore less likely to become energised.