There are plenty of electricians listed in the phone book along with a handful of companies who take out large ads boasting about their expertise. It seems like a fairly straightforward task to open the book and pick out the electrician or the company that jumps out at you. However, you will want to choose a little more wisely than that. What should you look for when choosing a Beverly Hills electrician? At The Electric Connection, you will find electricians who meet the following traits.

Reliable

You absolutely need an electrician who is reliable and will get the job done within a decent amount of time. You want to be able to call a company who can meet your needs by providing you with electricians who are reliable and will show up as promised.

Licensed, Bonded and Insured

Only hire an electrician who is licensed, bonded and insured. Failure to do so could end up costing you a great deal of money. All contractors who have access to your home should meet these qualifications. This will allow you to check the license number of a particular electrician to ensure he or she has a good track record. If something does go wrong, whether the electrician is somehow injured or if something is damaged in the home, insurance will take care of the problem.

Reputable

It is always a good idea to check out the reputation of a company and an electrician. Beverly Hills residents can check with the Better Business Bureau as well as their friends and neighbors who may have had any work done. Ask your friends to recommend an electrician.

You can always count on The Electric Connection to meet all of these qualities as well as several others like providing prompt service and giving accurate quotes about a job. Give us a call today to schedule your appointment to take care of any of your electrical needs.

The electrical enclosures may be one of the simplest electrical components but it is important that you design it properly. While it may be a simple component to specify, the extensive choices available in the market might overwhelm or confuse you. The most obvious choice might not always be the best in terms of reliability and long-term profitability. At the same time there may be under-rated choices that might turn out be great buys.

Let’s see how to approach enclosure design.

Critical Design Aspects to Keep in Mind

• Material Selection

Plastic or metal are the most popular choices. These groups can be further categorized into polycarbonate, ABS, aluminumpolystyrene, steel or cast iron. Select the material that can withstand the surrounding conditions of the location it will be installed in. Understand your needs and make a decision accordingly.

• Internal Design & Size of Enclosure

Consider the internal design of the enclosure. The design must meet with your requirements. Note the internal and external dimensions to make better use of the space inside, for housing your component. It is also important to take mounting options into account.

• Choosing the Right Metal

Popular choices include:

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.