A power surge is an increase in voltage flowing through your electrical units that rise above the standard voltage levels (120 Volts). These surges can be caused by lightning, high-powered electrical devices (elevators, air conditioners, refrigerators, etc), faulty wiring or even problems with your utility company’s equipment. Inevitably, these are all occurrences that we cannot prevent ourselves, so how can you protect your home and equipment from these damaging power surges?

Surge Protector

A simple solution is plugging in your electronics into a surge protector. A surge protector is a device used to protect your electronics from damaging power surges. However, many people use this tool for a much more obvious function, to plug in multiple components into one outlet, not knowing its protective capabilities. You most likely use at least one surge protector in your home already. But how does it work? How do you know that you are providing the top quality protection for your important devices?

How it Works

As you know, your surge protector pulls electrical currents from one outlet and passes them through all the electrical devices plugged into the surge protector. This aside, the more important feature of this device is its metal oxide varistor (MOV) component, which diverts extra voltage and preventing it from damaging your electronics. This MOV acts in different ways depending on the voltage flow to provide your devices consistent access to adequate levels of power. If the MOV indicates high levels of voltage, it will reduce the resistance and if the voltages are low it will create a higher resistance. However, it is important to be aware that these MOV’s can also burn out. By investing in a power surge with an indicator light you will always be able to determine whether or not it’s functioning appropriately.

In our next blog, Power Surge Protection: What to Look For, we will be discussing how and where to use your surge protector and purchasing tips for finding a quality protector. For more information on power surges and how to protect your equipment, contact the experts at Expert Electric. 604-681-8338

If you live in the United States, you’re likely well-familiar with our typical wall-socket setup. Your plug has two flat pieces of metal roughly half of an inch wide, with one side sometimes being slightly wider than the other. Your wall socket has two slots that match this, with one side also being slightly larger than the other. However, sometimes there’s a variance: some plugs have a third prong below and between the normal two, and most electrical sockets also have a third hole to match this plug. What’s the difference between these two types of plugs and is one better than the other?

To put it simply, yes, one is better than the other. When it comes to electrical plugs, the old adage “less is more” does not apply—the three-prong plug is far better than a two-prong. To learn why, let’s discuss the difference between the two.

In order for electricity to flow, you must complete a circuit. A circuit essentially is a connection from your power source to the device, and then from the device back to the power source. The line that brings power from the power source to the device is called your “hot wire”, which is most often red and comes off the positive terminal (noted by the large “+” sign). The line that then returns from the device to the terminal, usually a black wire connected to a “-“ sign, is known as the “neutral wire.” A plug must have both of these lines in order to work.

However, the third prong in a three-prong plug is a “ground” plug, which dramatically improves safety. When an unexpected burst of electricity happens, such a short in the device or a surge from your power supply, the ground plug will take that abundance of additional electricity and move it away from the device and down into the ground where it is safe. This prevents your device from being overloaded which can cause overheating, sparking, and fires in addition to ruining it.

Three-prong plugs didn’t become the standard in homes in North America until the late 1960s. If you have a home that was constructed around this time or after, odds are your wall sockets are probably already of the three-prong variety. Two-prong plugs can work with three-prong sockets just fine, and you’ll rarely experience any issues.

However, if you have any old two-prong plugs, you’ll likely need your electrical system updated in order to upgrade to a three-prong setup. Properly installing ground wires can involve several hours of electrical work and even cutting into your walls in order to do so properly, so it’s a rather large undertaking. However, it’s by far the safest and most prudent option.

Another option that doesn’t involve tearing open your walls is to install a ground fault circuit interrupter outlet, otherwise known as a GFCI. These sockets are two-pronged, but feature a miniature circuit breaker that measures the resistance through a plug and mechanically shuts off when the risk of a shock is present. While this can help you avoid being shocked by a faulty device, there is still no ground wire present so your electronics are not protected from a power surge.

It might be tempting to save money by doing the job yourself, but only a licensed electrician should attempt an electrical panel change out. The panel is a critical part of your home’s electrical system, as it supplies the electricity that powers the entire structure. As such, changing one out is a very complicated process, one which should only be undertaken by a professional. Electrical work is always dangerous, and an electrical panel change out is even more so. In fact, in some cities, it is illegal for anyone other than a professional to attempt it.

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