Cable size calculator – 100% Accurate

Here is the a cable size calculator that you can use to engineering work to select the correct cable for your application. This cable sizing tool is easy to use…

Understanding Issues with Contactors and Relays

Contactors and relays are essential components in electrical systems, used to control circuits by opening and closing contacts. Despite their similarities, they serve different purposes and face distinct issues. In…

Transformer Tap changers: Off-Load and On-Load tap changers

Tap changers are voltage regulation equipment used to adjust the voltage ratio in transformers by adding or removing tapping turns. Voltage adjustments can be made by using either on-load tap…

What is a motor control center (MCC)?

Hundreds are electrical motors are used in modern-day industries for process automation and control. To control those motors, motor control centers or MCC panels are needed. They contain circuit breakers…

Methods of Ground/ Earth resistance measurements on existing systems

It is vital to maintain good ground in a system. In order to ensure that, ground resistance measurements and tests are conducted on existing earth electrodes at periodic intervals after…

Fall of potential method or 3-point method for Earth resistance measurements

The fall of potential method or 3-point method is the most commonly used method to measure ground resistance. It is used to determine the earth resistance of an existing grounding…

Soil resistivity measurement methods

One of the key elements affecting ground resistance is soil resistivity. Soil resistivity measurements are conducted before setting up an earthing system, in order to ensure an effective earthing. Good…

Grounding transformer or Earthing transformer

Grounding transformers are used to obtain a neutral when an existing delta-connected or ungrounded systems are to be grounded. These transformers provide a path for the flow of fault currents…

Dual-element time-delay fuses

Time-delay fuses can provide overload and short circuit protection while overcoming momentary current spikes. They are used for the protection of motors and transformers. The time-delay characteristics of these fuses…

Difference between AC contactors and DC contactors

The AC contactors differ from the DC contactors in their construction, arc extinction, and usage in a circuit. In this article, let us discuss the major differences between AC contactors…