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.

If your old electrical panel is no longer functioning properly, it can be endangering your home and everything inside it. Read on for the various warning signs you should be looking out for.

Even an old electrical panel is an improvement over fuse boxes (these can no longer keep up with the energy demands of today’s households), but if it’s getting to be a bit too old, you may need to look into replacing it. The panel is responsible for taking power from the main line outside and directing it through your electrical system.

The electrical panel also disconnects circuits when there is too much current flowing through — this is what protects you from hazards like electrical fires and damaged appliances. If you’re not sure you need to replace your existing setup, we’ve put together some of the warning signs that will indicate whether or not it’s time to move on to a new panel:

Choosing a commercial electrician is a bit different from choosing a residential one. You likely have a much larger and more complex infrastructure than most homes. You almost certainly have less time to meddle around with unnecessary follow up visits and poorly done jobs. You have a business to run, and that means that any electrical work has to be done right the first time, preferably as quickly as possible. With that in mind, let’s take a look at what you should look for when selecting a call FB Electrical Services. We provide commercial services throughout Somerville, MA.

It might be hard to believe, but even with as cold as it’s been, spring is on the way! And while you’re out enjoying the outdoors, the Sterling electricians at Kolb Electric want to bring you some electrical safety tips to make this spring safe and fun!

Keep power cords away from water – you probably already know this, but water and electricity don’t mix. Any time you’re dealing with electricity, make sure you’re working in a completely dry environment. You should also consider testing your GFI outlets.

Beware of power lines – if your spring cleaning involves getting up on a ladder or using a long-handled pool-cleaning tool, make sure you know you’re clear of power lines before you start. Power lines are interesting—if you were to hang from one without your feet touching the ground, you would be safe. However, coming into contact with power lines while you’re standing on the ground is a different story, as the electric current will travel through you on its way to the ground. Note that if the power lines are low enough, this could happen even if you’re just standing under them!

Always call before you dig – underground power lines are just as dangerous as overhead power lines, and since you can’t see them, it’s almost impossible to know where they are! If your spring plans involve digging of any kind, like adding an addition to your home or even planting a tree, make sure you call to confirm that it’s safe to do so!

Keep materials, tools, and all body parts at least 15 ft away from overhead lines – like we said above, power lines can strike you even if you’re standing too close to them. 15 ft is the safest minimum distance, so make sure you’re aware of this, especially if you’re working on the roof.

Never fly kites or model airplanes near power lines – we keep harping on the power line issue because they can be very dangerous if you’re not careful. If you have a kite or model airplane that ends up getting tangled in power lines, don’t try to get it down yourself—call your local utility provider for assistance. As a side note, make sure you never use any metallic materials in your kite—these can conduct electricity back to you.

Inspect power tools and electric lawn mowers before every use – frayed power cords, broken plugs, and weathered or damaged housings can make your equipment dangerous to use, so don’t use anything until it has been repaired properly. When not in use, keep these tools unplugged and store them in a dry area.

Watch out for power lines hidden behind foliage – before you trim tree limbs and shrubs, make sure there are no power lines hiding behind them. If you are concerned about tree limbs growing on or around overhead power lines on your property, call your local utility provider.

Keep your electrical box clear – you know that large, green, ground-level box you may have in your yard? That box houses the components of an underground electrical system. Keep it clear of vegetation and other permanent structures, as utility workers may need to access the underground lines and equipment during unplanned outages or routine maintenance.

Do not use electric mowers on wet grass – as we said in the beginning, water and electricity are a dangerous combo. Only use an electric mower on dry grass, and if you need to use an extension cord, make sure you use an insulated cord designed for outdoor use and with the correct power rating for your equipment.

Treat all power lines the same – some power lines are high voltage, some are low voltage. For safety, treat all power lines as if they are harmful—because chances are, they will be!

The Sterling electricians at Kolb Electric want to wish everyone a happy and safe spring season. And if you need an electrician in Sterling or anywhere else in the MD/DC/VA area, call Kolb Electric today!