How to save on electricity bills?
A few small behavioral changes and other adjustments can help us save electricity as well as electricity bills. By saving electricity we are not only saving money but also saving…
Electromechanical relays vs solid-state relays
Relays are electrically operated switching devices, used to gain control over processes and circuits. Based on their principle of operation they are classified into two types: Solid-state relays and electromechanical…
Difference between earth leakage relay and earth fault relay
Earth fault is an undesirable condition at which current flow from a conductor to earth. This can happen when a current-carrying conductor falls on the ground or the body of…
What is an arc chute?
Definition of arc chute Arc chute is a set of metal plates that are arranged in parallel and mutually insulated from each other, which can divide, cool and safely extinguish…
High Leg delta connection
Power is transmitted over long distances at high voltage. In order to supply domestic and residential applications, it needs to be stepped down to 120V or 230V single phase. This…
Electrical wiring color codes – Important
Electrical engineers and electricians follow predefined wiring color codes while wiring houses, commercial buildings and industrial panel boards. It is mandatory to know the electrical wiring color codes before attempting…
Difference between NO and NC
In every control circuits and automation systems, logic is developed based on the open or closed state of switches, sensors or relays. Hence it is mandatory to know the concept…
What is kA rating (breaking capacity) of MCB and MCCB?
kA rating of an MCB or an MCCB is the maximum current it can safely interrupt in case of a short circuit. If the current goes beyond this value, the…
What is an MCB?
MCB stands for miniature circuit breaker. It is a circuit protection device, capable of protecting a circuit or a piece of equipment from greater damages caused due to short circuits…
Electric Short Circuit
Electricity is required for lighting up our homes and powering up industries. It can be constructive or destructive depending on how carefully it is handled. One of the most dangerous…