Photovoltaic cable tray installation in Tunisia

Cable tray installation for PV systems in Tunisia requires adherence to ANME technical guidelines, use of certified solar cables, and compliance with local safety and quality standards.

Technical Guidelines and Standards

In Tunisia, photovoltaic installations must follow the ANME guide for PV systems and the technical reference for grid-connected low-voltage PV installations. These documents outline the minimum technical requirements for design, installation, and maintenance, emphasizing safety for personnel and equipment . Installers must be certified under the PROSOL Elec program, ensuring compliance with quality and safety standards .

Cable Tray Design and Installation

• Material and Type: Use durable, corrosion-resistant cable trays suitable for outdoor solar installations. Materials like galvanized steel or aluminum are commonly recommended.
• Routing: Cable trays should follow the shortest and safest path from PV modules to inverters and combiner boxes, avoiding sharp bends and mechanical stress.
• Separation: Maintain separation between DC and AC cables to reduce electromagnetic interference and ensure safety.
• Support and Spacing: Trays must be securely mounted with supports at regular intervals, typically every 1–2 meters depending on tray type and cable weight.
• Protection: Ensure UV-resistant and weatherproof covers if trays are exposed to sunlight, and provide grounding and bonding according to local electrical codes.

Cable Selection

• Use solar cables certified to EN 50618, IEC 62930, or equivalent standards, which are designed for UV exposure, high temperatures, and outdoor conditions .
• Cross-section sizing should consider current rating, voltage drop, and ambient temperature. Typical PV systems use 6V, 12V, 24V DC modules, but low-voltage systems may vary .

Local Suppliers and Contractors

• KBE Elektrotechnik S.C.S provides certified solar cables and wiring solutions in Tunisia .
• Ekelec Energy specializes in industrial and photovoltaic installations, including cable tray setup and maintenance .
• Working with PROSOL Elec-certified installers ensures compliance with ANME standards and eligibility for government support programs .

Best Practices

• Plan cable tray layout before module installation to minimize retrofitting.
• Avoid overcrowding trays; leave space for heat dissipation.
• Regularly inspect trays and cables for mechanical damage, corrosion, or UV degradation.
• Document installation for maintenance and regulatory compliance.

By following these guidelines, PV cable tray installations in Tunisia can achieve long-term reliability, safety, and compliance with national and international standards.