African rural lighting Ready Board Box must be designed with grounding signs, which is a key measure to ensure operation and maintenance safety, prevent electric shock accidents, and comply with IEC international standards and low-voltage distribution specifications in multiple African countries.

Necessity of identification: TT systems are commonly used in rural power grids in Africa, and the outer shell of ready boards, PE bars, and grounding terminals must be clearly marked to avoid mixing neutral and protective wires and reduce the risk of leakage and lightning strikes.

Identification style standard: graphic symbols adopt IEC 60417-5017 basic grounding symbol "⏚" or protective grounding symbol "ⓖ"

Color specification: The PE wire and grounding bar should be yellow green dual color, with stripe width of 15-100mm, evenly spaced; The neutral line N is light blue.

Requirements for identification location:

1. Externally of the box: prominently located on the inside of the box door and next to the grounding bolt of the outer shell.

2. Internal terminals: PE busbar, grounding terminal, near the metal frame grounding point.

3. Exposed grounding wire: Brush yellow and green stripes along the entire length and connection points, clearly visible at a distance of 250-300mm from the ground.

4、 Applicable standards

International: IEC 60445, IEC 60417.

Africa: Most countries adopt IEC standards and have consistent labeling requirements.