Mexico voltage details: protect your electricity safety

Power quality in Mexico

The power quality in Mexico has vastly improved over the last several years, but the country still faces challenges. The stability of power supply is mostly sustained; however, voltage fluctuation  can be a rare occurrence. Voltage fluctuations may cause equipment failures and damage to electrical equipment for both industrial and domestic users. Therefore, it is of essence that users understand the power quality of the country in their choice of power equipment.

Electricity sector in Mexico

The Mexican power industry is monopolized by the National Electricity Company, Comisión Federal de Electricidad. The CFE provides generation, transmission, and distribution of electricity and delivers electricity services across the country. Even though it has been involved in a few private companies in recent years, the CFE is still the most important electricity supplier. Government policies encourage the development of renewable energy sources with the goal of energy diversification for sustainable development.

What is the voltage in Mexico?

In Mexico, the country has a standard voltage of 127 volts. This voltage is majorly applied in higher percentages of homes and most commercial environments within the country. Knowing this is rather important to expatriates who import electrical appliances into the country or are living within it, as they would have to make sure whatever appliances they come with can adapt to this voltage.

Types of voltage in Mexico

In Mexico, mainly single-phase and three-phase power supply are used. Normally, single-phase power supply is applied in residences while in industry, three-phase supplies are utilized. In the application of three-phase, energy efficiency and stability of the power supply will be improved accordingly.

Differences between voltage, power and current

Three fundamentals in electrical systems are voltage, power, and current.

• Voltage (V): This is the driving force for the flow of current.

• Current (I): Current is the quantity of charge that flows through a circuit. It is usually measured in amperes, A.

• Power: The rate of consumption of electrical energy, it is usually measured in watts, W. The formula for calculating it is P = V × I, which means power is the product of voltage and current.

Knowing the relationship among these three quantities is very important in terms of selecting appropriate electrical equipment and understanding equipment performance.

Types of plugs and sockets in Mexico

Following are the main types of plugs and sockets used in Mexico:

►Plug Type A: Double flat plug, mainly used for low-power appliances.

►Plug Type B: Double flat plug with a ground pin, suitable for most of the appliances.

Both plugs are common in the United States, too, and therefore, many appliances imported from the United States can be used directly in Mexico.

Why do voltage and frequency have to match?

Electrical appliances work properly only when their voltages and frequencies are matched. A mismatch in voltage leads to the failure of either an appliance to start or it results in overheating. Frequency mismatch gives erratic operations or breakdown of equipment, such as motors. Most electrical appliances are designed for optimum performance within a limited range of voltage and frequency. Consistency in these factors can help in prolonging the life of equipment and improving its efficiency.

Knowledge of the Mexican electrical system, besides other information, will allow you to make decisions about using electrical equipment with security and efficiency in mind.