FAQ: What Is Bus Duct?

What is bus duct used for?

In electric power distribution, a bus duct (also called busway ) is a sheet metal duct or also cast resin insulated containing either copper or aluminium busbars for the purpose of conducting a substantial current of electricity. It is an alternative means of conducting electricity to power cables or cable bus.

What is the difference between busbar and bus duct?

A busbar is a current current carrying conductor, commonly rectangular in shape, which can be tapped at various places along its length to supply power to a load. A bus duct is a safety cover for bus bars so that they are protected from damage and also from contact with people.

What is busway used for?

Where is busway used? Busway is used as an alternative to cable and conduit and is commonly found throughout mission critical facilities, data centers, industrial facilities, large residential complexes, petrochemical and electrical utilities.

What is busbar trunking?

Busbar Trunking System is the is a system of distributing electric power using copper or aluminium busbar with suitable enclosures and good amount of protection to prevent the cables from getting damaged due to foreign bodies. Busbars are now becoming irreplaceable simply because of the convenience and safety factor.

How many types of bus ducts are there?

Busduct are classified into various types depending on its application viz isolated phase Busducts, segregated phase busducts, non-segregated phase busducts.

How do you measure a bus duct?

Bus bar Cross Section Area as per Short Circuit= 50000X√ ((1.166/( 100×100)x(1+ 0.00403×85) x1. Bus bar Cross Section Area as per Short Circuit=626 Sq.mm. Select Higher Size for Bus bar Cross section area between 436 Sq.mm and 626 Sq.mm. Final Calculated Bus Bar Cross Section Area =626 Sq.mm.

What is cable bus?

Cable Bus is an assembly of insulated cable conductors designed as a system to transmit electrical current and to withstand the effects of specified system requirements, such as short-circuit current, circuit loading, bonding, with fittings and conductor terminations in a completely enclosed, ventilated protective

Why is it called a bus bar?

The term busbar is derived from the Latin word omnibus, which translates into English as “for all”, indicating that a busbar carries all of the currents in a particular system.

Can you touch a busbar?

A busbar is nothing but a conductor through which current flows. so the effect of touching a busbar are the same as that of touching a conductor. if you hang from a busbar with any part of your body touching nothing will happen.

Why busbar is required?

Busbars are metal bars used to carry large amounts of current. Often made of copper or aluminum, every home electrical panel has busbars to distribute ac power to the rows of circuit breakers (Fig. 1). Quite often, busbars have no insulation—they’re protected by a separate enclosure.

What is busbar and its types?

Definition: An electrical bus bar is defined as a conductor or a group of conductor used for collecting electric power from the incoming feeders and distributes them to the outgoing feeders. In other words, it is a type of electrical junction in which all the incoming and outgoing electrical current meets.

How does a bus plug work?

Bus plugs connect to the busway to feed power to the equipment. They use fuses or circuit breakers to protect the electrical circuit from overload. Busway accessories support the installation and connection of busway systems.

What is a tap off unit?

Tap – off boxes are used to draw power from the busway. The tap – off boxes have a special plug head (mast) which inserts into the busway track slot. Twist the tap – off box 90 degrees to make electrical connection. The blades in the mast fit into the busbar channel inside the busway track for a compression connection.