The power goes off and on at random times and often when you least expect it. When it happens, it is a minor nuisance that requires you to reset clocks and turn back on whatever appliance you are using. You don’t typically think of that few seconds of the power going off and then going right back on as serious. It is. Those little power outages are killing the life of your appliances and damaging your sensitive electronics. Every time the power flickers or surges, anything that is plugged in is basically getting a jolt. An electrician in Los Angeles wants you to save your electronics and appliances by investing surge protection. The team at The Electric Connection can get your home protected in just a few short hours.

Every day, little surges of electricity are sent through the lines and into your home. You may hear your refrigerator compressor kick on when nobody has left the door open or your lights may get suddenly brighter or dim. These are all signs of a power surge explains an electrician. Los Angeles homeowners may notice these things happen if they run more than a couple appliances at a time or when something like the AC unit kicks on. The electricity is pulled from the other appliances and electronics to run the AC, which is a lot like cutting off the supply. This makes everything else, including the AC, work a little harder and not run quite as it should. This is what causes the damage.

The fix is to have a whole house surge protector installed at the electric panel by a Los Angeles electrician. This will control the electrical flow and prevent those surges from happening. If the power goes out and comes right back on, the surge protector will prevent any one appliance from getting a jolt of electricity that may fry the board. Give The Electric Connection a call today and schedule your surge protection installation.

An electric motor is a machine that uses the concept of conversion of energy and consequently converts electric to mechanical energy. The main parts that help propel the process are the rotor, stator, windings, air gap and commutator. The approximate efficiency of an electric motor is 70%-85% (extra energy is taken by the sound and heat emitted by it).

Whether for tasks as huge as building high rises, to ones as commonplace as warming food, electric motors play a significant role in our lives.

Electric motors, both large and small, can be used in a number of ways in residential and industrial applications.

Here are the general and specific requirements that need to be followed in order to install an electric motor:

There are several different types of medium voltage earthing systems. These systems can be differentiated by using the neutral point connection method. They are different in the way that they operate and each of them has its own pros and cons. These earthing systems in medium voltage include the likes of:

The functioning of each differs from the other. They also have various applications. Let’s have a look at each system at a time:

In this one, there is no electrical connection between the earth and the neutral point except for the devices that are used for measurement or protection. There is high impedance inserted between the earth and the neutral point. There is no switching on occurrence of the first insulation fault. It is therefore important to carry out permanent insulation monitoring, show the first insulation fault and locate and clear the first insulation fault.

Pros and cons: The advantage of using this one is that it provides services by tripping only when the second fault occurs which is subject to the capacity of the network not leading to a high earth fault current which would be dangerous for people when the first fault occurs. It has its demerits. There is the risk of high internal over-voltages. Insulation monitoring is also compulsory as well as the presence of maintenance personnel who will be monitoring and locating the first fault during use.

It is also known as direct earthing. It has a connection between the earth and the neutral point. Upon first insulation fault occurrence compulsory switching must be done. It is significantly different from the above mentioned unearthed neutral.

Pros and cons: This system reduces risk of over-voltage occurring and also authorizes the use of equipment with a normal phase to earth insulating level. On the other hand, there is mandatory tripping upon occurrence of the first fault. The touch voltages developed are very high and this poses a high risk for the personnel while the fault lasts. Differential protection devices must be used so that the clearance time of the fault is as short as possible.

This system requires a resistor to be inserted between the neutral point and the earth. It is also known as limiting resistance earthing. Their operating technique is quite straightforward. Switching must be done upon the occurrence of the first fault.