El Salvadoran Power Distribution Box Standards

El Salvador classifies electrical distribution into low and medium voltage categories, with specific technical and regulatory requirements for installation and certification.Voltage and Plug StandardsIn El Salvador, the standard domestic voltage is 115–120V with a frequency of 60Hz, and the commonly used plug types are Type A (two flat parallel pins) and Type B (two flat pins with a grounding pin) rated at 15A . Type B plugs include a grounding pin that is slightly longer than the flat blades to ensure grounding before power connection. Both plug types are not insulated and the outlets are not recessed, which requires careful handling to avoid accidental contact with live pins .Distribution Voltage CategoriesElectrical distribution in El Salvador is divided into two main categories :Low Voltage (LV): Supplies with voltage ≤ 600 volts, typically used for residential and small commercial installations.Medium Voltage (MV): Supplies with voltage > 600 volts and < 115,000 volts, generally used for larger commercial or industrial facilities.Regulatory and Safety RequirementsAccording to Salvadoran regulations, particularly Agreement No. 387-E-2018 issued by the General Superintendence of Electricity and Telecommunications (SIGET), all new electrical installations must comply with the following :Certificate of Conformity: Required for connection of new energy supplies, especially for installations classified under large demand categories.Design and Inspection: Electrical drawings must be submitted for review, and installations must be inspected to ensure compliance with technical standards.Accredited Inspection Organizations (AIO): Certain inspections can be performed by AIOs, while others are conducted directly by the distribution company.Rate Categories: Installations are classified by demand:Medium Demand: Maximum monthly demand >10 kW and ≤50 kW.Large Demand: Maximum monthly demand >50 kW.Installation and Safety ConsiderationsDistribution boxes and wiring must adhere to technical design standards for safety and operation, including proper grounding, insulation, and adherence to voltage limits .For residential and commercial installations, the distribution box must be designed to handle the expected load and allow for safe connection and disconnection of circuits.Compliance with SIGET regulations ensures that installations are safe, reliable, and legally approved for energy supply.SummaryEl Salvador's power distribution standards emphasize safety, proper voltage classification, and regulatory compliance. Low voltage systems (≤600V) are typical for homes and small businesses, while medium voltage systems (>600V) serve larger facilities. All new installations require certification, inspection, and adherence to technical standards, and domestic outlets use Type A and B plugs with 115–120V at 60Hz .