Definition of electrical load

Physically an electrical load is a device that converts electrical energy into other forms of energy, it is a collective term for all electrical appliances, the lights, fans and air conditioners that we normally use are all loads. Load can also be further explained as the power consumed, generated or converted by a power device during operation, for example, the load generated by a generator is the power generated during operation.

Types of loads

Inductive loads: Inductive loads are loads with inductive parameters that produce electromagnetic induction when the current changes, causing the current to lag behind the voltage, i.e. there is a phase difference between the current and the voltage. This equipment tends to produce several times larger than the normal operation of the starting current, in the connection, disconnection process often appears in the reaction potential, affecting the power supply effect, usually applied to motors, transformers, inductors and other equipment, we usually use the washing machine, air conditioning will have inductive loads.

Resistive loads: resistive loads are purely resistive loads that work through resistive components, their resistance does not change with the change of current, and the current of resistive loads is proportional to the voltage, there is no phase difference, and its stability is better. His application in the circuit is very wide, can be used in almost any need to smooth voltage delivery scenarios, usually used in the conversion of electricity into heat or light energy appliances, such as lamps, ovens, heaters and so on.

Capacitive loads: Capacitive loads are loads with capacitive parameters in the circuit, different from inductive loads, its current is ahead of the voltage, so its power factor is greater than 1, as a capacitive compensation equipment, often used to regulate the power factor of the system. Capacitive loads are widely used, mainly used in filtering, voltage stabilization and protection circuits, are widely used in industrial control, communication equipment, computers and other fields, TV, computer electronic display is a typical capacitive load.

How to go about calculating circuit load capacity?

For individual appliances, knowing their current and voltage, and using the power formula cos to represent the power factor, you can do the calculation. For example, if the current through a wire is 10A and the mains voltage is 220V, then the load on that wire is 2200W.

Importance of electrical loads

Understand the use of home energy: electrical load can help you better understand the use of home energy, you can use it to know which of your home appliances use more power, so that you can have to target a large capacity, reduce the possibility of circuit overloading, reduce the risk of potential safety hazards, and at the same time a reasonable arrangement of the load can reduce the current and voltage for the circuit and the impact of the equipment to reduce losses, extend the use of equipment and circuits, and reduce the time of use of the equipment and circuits. At the same time, reasonable arrangement of loads can reduce the impact of current and voltage on circuits and equipment, reduce losses, prolong the use of equipment and circuits, reduce maintenance costs.

Reduce energy consumption: Through the rational allocation of loads, the power system can be improved to use electricity in a more rational energy allocation.

Extend the life of equipment and circuits: Electrical loads will also help you to understand the line of the most efficient, reduce energy waste. For example, in the power system, resistive loads and inductive loads have a low power factor, and are often regulated with capacitive loads that have a higher power factor, reducing energy consumption.

Improve the quality of power supply: inductive loads and resistive loads in the operation process will produce large current fluctuations, which affects the quality of power supply, and capacitive loads can compensate for these fluctuations, effectively reduce these fluctuations and improve the quality of power supply.

Impact of electrical loads on solar energy systems

If you want to use solar energy to power your home, you need to find out the load of your home to determine how large a solar system you need, a larger load requires a larger solar system, by calculating the total power of the home load to choose the right power of the solar panels as well as the solar inverter. In addition, your electrical load will also determine how long your home battery backup can provide you with power.