Green Yellow Earth Wire Electrical Cable for House

A: Earth cable provide a direct path for current to flow safely to the ground when a fault such as a short circuit or equipment failure occurs.
1. Provide electrical fault safety
If a live wire touches the metal part of an appliance or electrical equipment, the grounding wire ensures that the excess current flows to the ground, preventing the metal casing from becoming live and causing electric shock.
2. Overcurrent protection
By creating a low-resistance path for the fault current, the grounding wire helps to quickly trip or blow the fuse.
3. Voltage stability
It provides a reference point for the voltage of the electrical system, ensuring stability and reducing the risk of voltage surges.
4. Lightning protection
In outdoor installations, grounding wires protect against lightning strikes by providing a path for surges to dissipate to the ground.
5. Reduce electromagnetic interference (EMI)
Grounding wires can help mitigate EMI in sensitive electronic equipment by grounding stray signals.

A: Identifying a ground cable is simple and can be done in a few ways:

1. Color Coding
Standard color code: Most modern electrical systems follow a standard color code:
Green with yellow stripes (in most countries, including Europe and the UK).
Plain green (in some older systems or countries like the United States).
Exception: In older wiring systems, ground cables may not be color coded. They may be bare (uninsulated) or wrapped in a sleeve.

2. Bare or Stripped Wire
In some systems, the ground wire may be bare copper with no insulation. It is usually connected directly to a ground rod or metal structure.

3. Look at the connection point
The ground wire is usually connected to a ground point on an appliance or distribution board.
It may be connected to a metal chassis, a ground rod, or a ground terminal.

4. Labeling
Some electrical installations will mark the ground wire with a symbol, such as a ground icon.

5. Testing with a Multimeter
Place one probe on the suspected ground wire and the other on a known ground point, such as a metal pipe or ground rod. If there is continuity, it is most likely a ground wire.

If you are unsure, consult a licensed electrician or contact us to avoid the risk of misidentification and ensure safety.

A: No, you cannot use just any cable for grounding connections. The choice of grounding cable is critical for safety and must meet specific requirements. Things like compliance with safety standards, current carrying capacity, durability and resistance, material, size, conductor type, etc.