So you're looking for information about Commercial Electrical Contractor?
Doing this type of work is, for the most part, highly
lucrative.
Commercial electricians are among the highest paid in the electrical
trade. The commercial work is substantially different from the other types of
electrical work, particularly residential work.
The method of wiring is primarily in
conduit with individual conductors enclosed, as opposed to cable (Romex, MC,
etc), and the voltages encountered are typically three phase, and most often
120/208 Y, 120/240 delta, 480/277.
Commercial electricians rarely work alone, and most often are part of a
larger crew. Many of the commercial installations are done at a substantial
heights, such as working on Highrise Electrical Work, so a commercial electrician has to be comfortable working on ladders and
even lifts.
Some of types of work that a commercial electrical contractor
performs are:
Electrical Service Upgrades / Repairs
Installation and repairs of all types of
Electrical Systems and Circuits
Troubleshooting, Repair and Maintenance of many
types of low voltage systems
Wire, Test and Troubleshoot Motors, Generators and
Transformers
Install and Repair Fire Detection Systems
Install and Troubleshoot I.T. computer cabling
Install Audio / Video wiring and complete Surveillance systems
In order to perform this type of work, the commercial electrical contractor
must own or have access to some specialty tools such as:
Hydraulic or Electric Conduit Bender
PVC Bender Box (good through 4")
Knock-Out Set (good through 4")
12' - 16' A Ladders
24' - 32' Extension Ladders
Wire Benders (manual or hydraulic)
Another important factor in doing commercial work is being able to provide the much higher initial overhead and liability and workers compensation insurance coverage. All of these
special requirements end up costing the commercial electrical contractor much
more money to operate than a residential contractor.
So it stands to reason that
if you're taking larger risks and your operational overhead is higher, then you
should expect to charge and earn more than your average residential electrical
contractor.
Commercial jobs are typically much more involved when it comes to estimating, and consequently many contractors use estimation software.
Fortunately, there are some good and not too expensive programs out there.