Busbar is a metallic strip used for electrical power distribution that makes it easier and less expensive than traditional cabling. Common sizes for commercial and industrial applications range from 40 to 1200 amps. Copper busbar offers benefits like high conductivity, damage resistance, and long lifespan, while aluminum has reliability issues with joints over time. Different types of busbar include segregated, non-segregated, sandwich, air insulated, isolated phase, and cast resin insulated varieties. Installing busbar provides advantages over cabling like more compact design, better heat absorption, flexibility, cost savings, resistance, lower energy loss, and easier distribution.

1. Basics of Electrical Busbar- Residential & Commercial
Projects

2. Electrical Busbar
Busbar is a metallic strips of copper & Aluminium conductor
which is used for electrical power distribution. The Bus bars
that makes the electrical power distribution much easier ,
less expensive and more flexible.

4. Common commercial and industrial
busbar sizes
• 40 Amp
• 50 Amp
• 60 Amp
• 100 Amp
• 225 Amp
• 250 Amp
• 400 Amp
• 800 Amp
• 1200 Amp

5. The most common sizes of the bus-
bars are:
• 40×4mm (160 mm2)
• 40×5 mm (200 mm2)
• 50×6 mm (300mm2)
• 60×8 mm (480 mm2)
• 80×8 (640 mm2)
• 100×10 mm (1000 mm2)

6. Copper Busbar
• High conductivity
• Resistance to damage
• Higher performance in clamped joints
• Lower coefficient of linear expansion
• Long lifespan
• High recovery value
• Higher modulus of elasticity
• The surface of copper naturally oxidizes forming a thin hard
layer on the surface which remains conductive.
• Exposed aluminum surfaces also form an oxidized film.
However, this film is not conductive and leads to long term
reliability issues with joints.

7. Segregated Phase Busbar
• Segregated phase bus duct has all phase
conductors in a common enclosure with metal
barriers between adjacent phases.
• Range - 630A-5000 A
• Power generating
plants , Industrial, inter connections
switch gear to transformers.

8. Non - Segregated Phase Busbar
• Non-segregated bus duct is where all the phase bars are
in one common metal enclosure with no barrier between
phases.
• Range - 630A-6000 A ; 415 V to 1100 V
• Inter connections switch gear to transformers ,Switch
gear to switch gear.

9. Sandwich Busbar
• Copper - 630A-6300A
• Aluminium - 400A-5000A
• Transformer to Switchgear Panels
• Interconnection between Switchgear Panels
• Diesel Generator to Synchronizing / Switchgear
Panels
• Rising mains or Vertical distribution
• Horizontal distribution

11. Air Insulated Busbar
• Copper 125A-1250A
• Aluminium 200A-800A
• Rising Mains or Vertical
distribution
• Horizontal distribution

12. Sandwitch BusBar Air Insulated BusbarType

13. Light Trunking Busbar
• Copper 25A, 40A
• Horizontal distribution

14. Isolated Phase Busbar
• The Isolated Phase Bus (IPB) is used to carry very large
currents, typically between a generator and a step-up
transformer, in power generation facilities.
• Each phase conductor is enclosed in its own separate
grounded metal housing, with each housing separated
from each other by air.
• Designed to carry continuous current ratings of 3,000
amperes to 45,000 amperes, and rated for voltages from 5
kV on up to about 38kV.

16. Cast Resin Insulated Busbar
• Compact and maintenance-free cast resin insulated bus bar
systems with copper or aluminium conductors for
transmission of energy between 513A - 6300A.
• Very compact: up to 50% more compact than metal
enclosed systems
• No fire barrier required due to 3 hour fire rated construction

19. Installing Busbars over conventional cabling has a range of
advantages
• Design: Busbars have a compact design through which
compressed flat conductors can pass through the enclosure.
Due to the compact designs, busbars require lesser space than
traditional cabling systems
• Heat Absorption: Since the design is compact and has a
metal casing with well-defined surface, bus bars can absorb
heat generated while transmissions and distribution of
electricity in the walls of the enclosure. The system of cooling is
much better than traditional cabling system.
• Flexibility: Bus bars are more flexible in nature compared to
cables in the sense that it can be used in any kind of structure
with any configuration. They are easily modifiable and hence
the addition of an extra room or building can be easily done.
Bus bars can also be relocated without much of a capital
expenditure.

20. • Cost Savings: Bus bars can be mounted easily than a cable
and incurs a lesser cost of installation than traditional cables.
They can also be mounted at a lesser time than traditional
cables.
• Better Resistance: Bus bars have rigid design elements
and hence has better resistance than cables, especially in
case of short circuits. Busbars have a minimum distance
between the conductors which in turn reduces the induction
of resistance.
• Reduced Loss of Energy: Busbars have lower
resistance than cables. Hence the loss of energy due to
transmission and distribution is lower in Bus bars.

21. • Lower Electromagnetic Field: Due to the compact design
and the steel shell, a comparatively lower electromagnetic
field is created around a Busbar as compared to a cable.
Hence, high loads of 4000 ampere to 5000 ampere can
easily be created near the data cables which is free from
electromagnetic interference.
• Ease of Distribution: Bus bars help in easy, efficient and
safe distribution of line with the junction boxes in places
where they are required. Moreover, the location data
junction boxes can be changed whenever and where-ever
in the future. The junction boxes can be easily increased in
the future as well with bus bars.
• Safe and Secured: Busbars are fitted with a steel
casing and cannot be damaged by rodents as
compared to cables.

24. Electrical Panel Busbar:
• Busbars are metal bars used to carry large amounts of
current.
• Often made of copper or aluminum and every home
electrical panel has bus bars to distribute ac power to
the rows of circuit breakers .

32. THE RULES OF REJECTION
Reach for higher ground and they slap
your hand, Keep reaching.
Expect to be successful and they call you a
dreamer,
Dream on.
Jump at a good opportunity and be labeled
unstable,
Jump higher.
Every thing happens for a reason,
You be the reason .
Challenge the norm and be labeled a rebel,
Lead a rebellion.
Tolerance is often mistaken for weakness,
Be tolerant anyway.
Ideas sprout from the seeds of rejection,
Go get rejected.
Open your heart to minds that have closed.
Take joy in their opening.
Notice a strength in everyone you meet
You will become stronger.