Comply with standards: Follow NEC, IEC, or local codes. Use UL/CE-certified parts and record installation details for future inspections. Schedule regular maintenance and inspections to ensure long-term reliability. Aluminium Copper Distribution box - 120 mm² - 300 A max., Ltd is a professional MEP company settled in Cambodia. We not only provide MEP installation and preventive maintenance services, but also import electrical products such as switchboards. Protect your electrical systems with Ganga Metco's high-quality Sheet Metal Enclosures and Power Distribution Boxes, crafted for industrial strength, durability, and safety. One of our expert. Thanks to our Cambodian and International qualified Engineering team, ATS is delivering reliable, customized and powerful solutions as per International standards. +855 (0)23 222 411 or +855 (0)93 371 333. in this also including equipment, buildings, dams, waterways, fuel storage yards, ash. This document specifies the service conditions, rated characteristics, general structural requirements and test methods of medium voltage/low voltage prefabricated substations and RMU cabinets, that are cable-connected, to be operated from outside (non-walk-in type) for alternating current of rated.