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Busbar and Busbar Trunking Basics
A busbar is a rigid metal conductor, usually copper or aluminium, that carries large currents and shares them between several circuits. You will meet busbars in two places: inside electrical panels, and as busbar trunking that runs along a building in place of heavy cables.
VFD Selection and Sizing Guide: How to Choose the Right Drive
A variable frequency drive (VFD) controls the speed of an AC motor by changing the frequency and voltage it receives. Choosing one is mostly a matter of matching the drive to the motor, the load and the site. Getting any of the three wrong leads to nuisance trips, overheating or a drive that is larger and more expensive than the job needs.
MDB, SMDB and DB Panels: What Is the Difference?
Most buildings distribute power in tiers. Power arrives at a main board, is split to sub boards, and finally reaches the final distribution boards that feed lights, sockets and equipment. The three names you will see on drawings are MDB, SMDB and DB.
MCB vs MCCB: What Is the Difference and How Do You Choose?
Miniature circuit breakers (MCBs) and moulded case circuit breakers (MCCBs) both protect a circuit against overload and short circuit, and both can be switched off by hand. They differ in size, current range, breaking capacity and how much of the trip behaviour you can adjust.
Motor Control Centre (MCC): What It Is, Its Parts and How to Choose One
A motor control centre (MCC) is a factory-assembled switchboard that groups the starters, protection and control gear for many motors in one organised enclosure. Plants, pumping stations, HVAC rooms and process lines use MCCs to start, stop and protect motors from a single, safe point.
Soft Starter vs VFD: How to Choose the Right Motor Control
A practical comparison of soft starters and variable frequency drives (VFDs): when each is enough, and how they differ in current control, speed regulation, energy savings and cost.