If improperly installed, aluminum wiring can raise the risk of a house fires! From 1960’s up to the mid 1970’s aluminum wiring was sometimes used for branch circuit wiring instead of copper wiring.  During this time period copper prices were very high and aluminum wiring became a cost effect alternative to copper wiring.  Was aluminum wiring found to be as good as copper wiring?  Not even close!  Aluminum wiring quickly became a fire risk if not installed properly.  At the time aluminum wiring methods were exactly the same for copper.  Over time it was found that improper installation methods and electrical devices not designed to accept aluminum conductors could lead to fires.

If was quickly found out that aluminum wiring could cause flickering lights, hot electrical connections and even burned or melted insulation on the wiring.  There was a severe problem with overheating which can lead to fires.

1.  A Softer Metal.  Aluminum is a much softer metal when compared to copper.  During the stripping process from aluminum it can be easy to nick.  These nicks can cause hot spots in the conductor causing overheating and the potential risk of fire.  Electricians had to develop different methods of stripping the insulation off of the aluminum wiring to avoid damaging the conductor.

2.  Aluminum Expands.  When an appliance demands electricity on the circuit the conductor heats up.  While this process takes place with copper conductors too aluminum expands at a much greater rate than copper.  This expansion and contraction of the aluminum wiring  caused the the conductor to creep out from under the terminal screws on breakers and electrical devices such as plugs and switches.  This creeping of the wiring resulted in a loose connection which lead to sparking and potential fire.

3.  Corrosion or Rust.   When steel rust it becomes red, on copper rust is green, and on aluminum it is white.  When copper wiring rust it’s not as big as problem when compared to aluminum, copper rust is actually electrically conductive.  This rust on copper still allows the electricity to flow and doesn’t create as much resistance of the electricity or simplify put it doesn’t interfere as much.  However, when aluminum rust it forms a white oxide which is not a good conductor of electricity.  This creates resistance or reduces the flow of electricity.  This resistance interferes with he flow of electricity, and can cause overheating leading to fires.

There are several options for you if you have aluminum wiring in your home.  We can evaluate your homes wiring and come up with several effective methods and affordable price ranges.  It’s important to have your homes wiring thoroughly evaluated so you can know the truth about its condition so you can make the proper decision.

Solution 1.  Rewire the entire house with copper wiring.  This would be the safest long term solution for aluminum wiring.  This method would require reduced maintenance and reduced inspections needed when compared to aluminum wiring.  Rewiring the home is the safest long term solution to aluminum wiring when compared to other methods.  This solution can be expensive when compared to other solutions.  However, we have a variety of financing options and payment plans available for almost every budget.

Solution 2.  Check all connections in home and repair as needed.  Then re device the entire home with aluminum rated devices.  This short this method entails replacing all the homes plugs and switches with ones that are designed to accept aluminum conductors.  It’s important to note aluminum rated devices can be hard to find at the big box stores.  When these devices were first introduced they simply had a larger screw or terminal for the aluminum conductor to fit under.  Unfortunately, these CU/AL devices failed to work good enough and was not an effective solution.  New devices CO/ALR are created out of a similar metal which shares a similar expansion and contraction rate as aluminum which reduces the creeping of the conductor.

Solution 3.  Pigtailing.  Pigtailing simply means taking the aluminum wire connections that go to the device and splice on or pigtail on a copper conductor to go to the device such as a plug or a switch.  It is important to note that it does take a specially designed wire nut or twist-on wire connectors to to perform this method.  While this method is the cheapest it is important to make sure that routine safety checks and inspections are performed on your homes wiring to reduce the chances of future problems.

Even with all the disadvantages, aluminum wiring still has its advantages under certain applications.  It’s important to note even with these advantages you should not use aluminum wiring in your home for standard 15 or 20 amp branch circuits.

1.  It’s Light Weight.  Aluminum is lightweight in nature.  Being lightweight is an advantage when conductors are used over long distances.  This lightweight property is most beneficial for aerial applications were the aluminum wiring is suspended between poles.  This wiring method is most commonly seen in utility company applications and telecommunication lines.  Being light weight also makes the aluminum wiring easier for the installer to work with.  This makes the cable less physically demanding to install.

2.  Aluminum Wiring is Cheaper.  Aluminum wiring can be half the cost of copper wiring.  When a large amount of wiring is needed saving half the cost can be a huge benefit over copper wiring.  This method is mainly seen in feeder circuit applications in commercial buildings as well as sub panels and 220 circuits in residential applications.  It’s important to note this practice of using aluminum wiring for sub panels, services, and 220 circuits in residential applications has been deemed acceptable when properly installed and connected.

What’s more important than reliable access to electricity? Safe and reliable access to electricity! We use tools and appliances every day. Heck every hour. And in some instances, every minute. But generally speaking, we don’t really pay much mind to how safe we’re being with it. But you should. Accidents happen all the time (and if you like statistics, boy we’ve got ‘em right here!), and whether you think it could happen to you or not, the fact of the matter is we put ourselves at risk all the time.

This is why it is outright critical that we ensure we’re taking all of the steps we can to protect ourselves, our homes, and our loved ones. Luckily, safety isn’t all that hard, and really takes a minimal time investment. Here at Kolb Electric, your safety is the top priority to our Alexandria electricians. So take a moment to read up! You might learn something new.

Regarding Electrical Supply

First off, to use any appliance safely, you should always keep in mind the right places to use them relative to your home’s safe supply. We’re talking, of course, about dedicated circuits. We’ve spoken of them many times, but it’s important because ensuring the proper appliances get the proper setup is key to operating them safely. Appliances that should be on dedicated circuits include:

Also, if your appliance is going to be near water sources (kitchen/bathroom appliances), be sure they are plugged into a GFCI outlet. Don’t have GFCI outlets? Looks like it’s time for some installation!

Using Power Strips for Your Appliances

Don’t “daisy-chain”, be sure you’re using indoor for indoor, outdoor for outdoor, never cover your cords (generates dangerous heat), and don’t exceed the safe capacity. Also never use power strips or extension cords to power heaters or other high-wattage appliances. They weren’t designed to handle that much power, and they may overheat/catch on fire.

General Appliance Safety Tips from Our Alexandria Electricians

Rules of thumb that promote safety are a great idea, and our Alexandria electricians are here to give you the rundown!

Need the services of a certified electrician to beef up your home safety? From outlet installation to wire repair, our experts have you covered! Contact Kolb to learn about our services, or to set your appointment today!

Now that the weather outside seems to have finally transitioned from frosty and cold to more seasonally appropriate, warmer conditions, homeowners across the Mid Atlantic are getting ready to dust off their gardening tools and begin tackling large-scale landscaping projects. However, before sprucing up the bushes with your sheers or using a weed whacker to edge your plot, make sure that you aren't putting yourself in harm{'}s way by conducting a precautionary inspection of your home's exterior wiring.

By becoming aware of where the electrical outlets and wiring on your property are, you'll be better prepared against the dangers of a costly mishap. For instance, you may have an important cluster of wires hidden behind an overgrown bush on your front lawn. If you were to accidentally cut or damage any of these wire, you are not only likely to cause a blackout within your home, but you may be at risk of electrocuting yourself.

In the same vein, wires run underground around most properties. It isn't uncommon for these wires to be placed only a few inches beneath a stretch of lawn along the perimeter of the house. If you were to shove a trowel into the ground at this point to maybe plant some vegetation, you could sever the wire, which would require you to potentially rewire the entire house.

An important component in your main electrical service panel is commonly known as the breaker. If you’re a homeowner, surely you have visited yours a few times over the years. But what exactly is it? And what does it do? Let’s go over the importance of the breaker and what its doing for your home.

If you read our article on the home electrical system a few months back, you will know which step the service panel comes in receiving electricity for your home. The service panel is the gateway for all electricity in your home. After electricity comes through underground or overhead power lines, it goes to your electrical meter and then to the service panel. Electricity branches off from here and travels to the rest of your home. Within the panel are circuits for different areas for electricity to travel. Shutting down a circuit can cause power loss to a part of the home, maybe a room or two. But because the home is on many different circuits, power can remain active in the rest of the house.

After electricity arrives at the service panel, it travels to a circuit. The circuit is a loop in which electricity travels from one end to the other. The breaker splits up to 100 amps or more into the circuits to distribute the power. Usually each circuit in a common residential home operates at 15 amps. The breaker is designed to “trip” if it receives an excess of electricity. If a power surge occurs on the outside of the home, for example a lightning strike, the service panel will stop the flow and turn off. If a surge happens on a circuit within your home, the breaker will also shut down that loop to protect the rest of the house.

Over time if work on a service panel is not completed correctly, the circuits could blow more frequently due to overloading. Parts in the panel can become outdated, loosen, or get burned out. If a service panel is not maintained and up to code, it also poses specific risks, making your home more susceptible to fires and electrical surges.