Copper Busbars – Designing Guidelines for Electricians

Busbars are metallic strips used with electrical board distribution from where the electrical supply point starts till the output circuits. Designs of busbars depend upon where to put the busbar and the position of the current incoming device as well.

Busbars are produced in a variety of shapes, like flat strips, solid bars, or rods and are typically composed of copper, brass, or aluminum as solid or hollow tubes. Their shapes decide their circuit current flow. They may use in different varieties of configuration ranging from vertical risers, carrying current to each circuit in a multi-story building. There are certain issues that need to be addressed in designing busbars systems:

  1. If during current flow, if temperature arises, it may lose energy.
  2. Energy efficiency in strips made of copper circuits.
  3. Complete maintenance of circuits.

The current carrying capacity of the busbar is mainly depended upon two design limitations mainly. These upper-temperature limits were chosen to limit the potential for surface oxidation of conductor materials and to reduce the mechanical stress at joints due to cyclic temperature variations. In practice, these limitations on temperature rise may be relaxed for copper busbars if suitable insulation materials are used.

Running busbars at a high working temperature allow the size of the bar to be minimised, saving material and initial cost. However, there are good reasons to design for a lower working temperature. Majorly it depends upon the calculation of maximum current carrying capacity in copper busbars, which means the current rating for a busbar depends on the choice of working temperature. The bar is heated by the power dissipated in it by a load of current. Therefore, the design of copper busbars should maintain high temperature and shape-dependent and balanced circuit flow. Buy busbars for your circuit, call us on 0452294224 or email us on, we will connect you within in 24 hours.