We’re excited to announce the addition of six new off-road LED light bars to our SBL series product line. The 12″, 30″, 50″ light bars are equipped with two rows of powerful LEDs that emit anywhere from 1,100 to 10,000 lumens depending on the length of the bar.  These heavy-duty light bars can be used for many applications, including off-road driving lights, daytime running lights, or fog lights on trucks, ATVs, or UTVs as well as for work lighting, industrial lighting, marine lighting, and tractor lighting.

LEDs in these light bars emit either a wide flood beam or a combination spot/flood beam pattern for focusing on long- and short-range distances simultaneously.

Within the construction industry is a continued need for highly qualified specialists in many areas, including carpentry, plumbing, and electricity. All are well-paying fields, but in particular the trade of master electrician can give a person a good standard of living and considerable career flexibility. The path to earning the title of master electrician is somewhat long and requires many hours of trade school or college coursework but is very well-marked with the apprenticeship experience required. Of course, as with any profession, the level of education and practical experience needed depends upon the state or territory within which you wish to learn such a valuable trade.

High school courses rich in math and science are a must if you wish to do well in your path to master electrician certification. These courses will give you a great background in which to be able to successfully complete trade school or junior college courses in physics (electricity) as well as safety and industrial maintenance. Most states require some up-front training in a trade school or college before beginning your on-the-job training as an electrician. Checking with your particular state or territory is necessary in order to assess the exact requirements for certification.

In addition to any classroom work, you will be required in most cases to fulfill at least two years of apprenticeship work with a licensed master electrician. It is during this time that you begin to learn this profession fully and gain a proper understanding of the responsibilities involved. The International Brotherhood of Electricians supports all apprenticeship activities, including helping potential apprentices find qualified master electricians with whom to learn. You should expect any master electrician you work with to be highly knowledgeable as well as very demanding as to what he or she expects from you. Be prepared both physically and mentally for a challenging two year period as you complete your apprenticeship.

After a total of four years between trade school and apprenticeship training, you should be prepared to take the licensing exam for journeyman electrician. If you pass this exam, you will be certified as a competent journeyman electrician. However, in many states, a journeyman electrician must still work under the direction of a master electrician. It will take on average another three to four years to gain enough experience before applying for the license of master journeyman electrician, or more simply, a master electrician.

In the United States, most licensed master electricians can expect between $40,000 and $70,000 per year as an average wage. Though pay is currently lower on average than over the past few years, this is expected to improve as the economy recovers and homebuilding rebounds. Also, some master electricians decide to open their own electrical business or consulting firm and can expect in many cases to out-earn the average expectation in most states. With such a certification, you are only limited by your willingness to work on both residential and commercial sites.

Electric motors power everything from tiny electronics to massive industrial pumps. Yet, they all work on the same basic principles. Though AC motors seem ordinary, there are complex activities going on behind the scenes.

The simplest types of motors are three-phase AC motors. They convert a rotating magnetic field into mechanical rotation. The basic parts of an AC motor are the stator, rotor, bearings, drive shaft, and frame. The supply power is connected to coils of wire that are wrapped around laminated iron cores in the stator; the stationary part of the motor. When the coils of wire receive current, they generate a magnetic field known as poles. Each phase of power has the same number of poles; the poles are spaced evenly around the stator.

Historically, speed control of three-phase induction motors was very difficult. The only way to change the operational speed is to change the frequency of electricity supplied. Today, this task is accomplished by use of a variable frequency drive or VFD. This device is made of three main components: a rectifier, a DC-Link, and an inverter. The rectifier takes the incoming AC voltage and converts it to DC voltage that can be used by the electronics in the VFD. The DC-Link then uses capacitors to help smooth out the DC voltage from the rectifier and feeds it to the inverter.

The inverter then converts the DC voltage back to AC voltage. The inverter also controls the output frequency of the AC power by sending precisely timed pulses of DC power at specific voltages to rebuild the AC sine wave.

With a VFD, not only can the output frequency be controlled, but it can be slowly ramped up. This allows for smoother starting and can be adjusted to keep a motor spinning at a specific frequency. VFDs can produce three-phase power from a single-phase source, or even a DC source, to power highly efficient three-phase motors in locations without a three-phase supply. VFDs can also be incorporated into a PLC system to allow for automatic or remote control.

The combination of a VFD and AC motors offers a wide variety of functions and increased efficiency. Basic understanding of these technologies is essential for any electrician.