Answer: SWA cable is a type of electrical cable with a galvanized steel wire armouring. This armouring provides mechanical protection, which allows the cable to withstand higher stresses, be buried directly, and be used in external or underground applications.

Answer: SWA cable is primarily used for:

• Power distribution in industrial, commercial, and residential installations.
• Underground installations.
• External power supplies, such as garden lighting or outbuildings.
• Harsh environments where mechanical protection is needed.

Answer: Yes, SWA cable is designed for outdoor use due to its robust mechanical protection and resistance to various environmental factors.

Answer: Yes, SWA cable is often used for direct burial without additional conduit due to its strong protective steel armour.

Answer: Factors include:

• Cable size (cross-sectional area).
• Ambient temperature.
• Installation method (e.g., buried, in air, in conduit).
• Grouping with other cables.
• Thermal resistivity of the soil (for buried cables).