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.

Your lights and appliances are working fine, so that means your wiring is too, right? Not so much. Seldom inspected after installation, the wiring in your home may need an update, especially if your home is more than 40 years old.

Installing sufficient wiring goes beyond safety. It also means enhancing your home’s functionality, reliability, and safety to keep up with today’s ever-increasing power needs. This applies not only to the installation of current electrical wiring, but wiring for your phone, Internet, cable, and more.

According to the NFPA (National Fire Prevention Association), faulty wiring is the leading cause for residential fires. The National Electric Code (NEC) updates electrical codes and standards for outlets and wiring every three years. Their mission is to keep up with technology designed to keep your home and family safe. Has the wiring in your home gotten any attention since the 2014 NEC code updates? Chances are it’s been far longer than that.   

Aluminum wiring used in the 60s and 70s, non-metallic wiring installed in the 40s and 50s, and knob and tube wiring in pre-1930s homes are well-known safety hazards, as are loose connections and frayed wires resulting from wear-and-tear.  

These are an enormous safety hazard – for you and your electronics. Without proper grounding, electrical excesses have nowhere to go but into your devices – or you – even if you have a surge protector. Reduce shock risks by rapidly addressing this sign of wiring that is way behind the times.

Identified by the “TEST” and “RESET” buttons on receptacles, GFCIs protect you from shock in high moisture areas. They are currently required in bathrooms, kitchens, laundry rooms, utility rooms, garages, spa/pool areas, unfinished crawlspaces/basements, and any areas outside of your home. If you are lacking these inexpensive, easy-to-install devices in any of these areas, you may be in for a shocking experience.

AFCIs prevent fire by acting as a circuit breaker, which disconnects in the event of a potentially dangerous arc. They are required in bedrooms in all 50 states, though some states require them in all circuits throughout the home.

Childproof outlets require equal pressure in all prongs simultaneously for electricity to flow. They cost pennies more than traditional outlets and are required in all newly built homes.

How many amps power your home? While 60 amps may have been sufficient in the past, today’s homes often need 100 to 200 amps to successfully operate the glut of large and technologically advanced appliances you use simultaneously, from mobile devices and flat screens to your refrigerator and air conditioner. Without an adequate power supply, you could end up damaging these sensitive items beyond repair.

Protect your family and home, ensuring the smooth, efficient operation of all things electrical while boosting the value of your property. Contact Mr. Electric® for an electrical safety and wiring inspection today.

hazardous location lighting.

The National Fire Protection Association (NFPA), National Electric Code (NEC) 70, defines hazardous locations through a system of classes, divisions or zones, and groups that products must be labeled as to be used in those areas. Hazardous area classifications are based on the general type of substance or material that is present in the area, the likelihood that it exists, and more detailed specifics, such as ignition temperatures and combustible properties.

Class I:

A Class I hazardous location contains flammable gas, liquid-produced vapors, or combustible liquid-produced vapors that can be present in quantities large enough to create an explosion.

Typical locations include airplane hangars, vehicle paint shops, commercial laundromats, and gas plants.

Class III:

This type of location contains easily ignitable fibers or flyings in the air but that aren’t likely to be in suspension in amounts large enough to cause an explosion.

Typical locations include textile mills, cotton mills, and sawmill facilities.

explosion-proof LED lights that are safe for use in a variety of hazardous locations. Click each photo to see details, including a complete list of classifications and certifications.

If you have any questions, don’t hesitate to call us toll free at 866-590-3533. Our customer service and technical support teams are available from 8:30 a.m. to 8 p.m. CDT Monday-Thursday and 8:30 a.m. to 4 p.m. CDT on Friday.

There’s no question that LED lights are the best option for fleet vehicles—or any vehicle for that matter. They consume 90 percent less energy than incandescent bulbs and last about 42 times longer. Because fleet vehicles are constantly in motion, long-lasting LED lights can be of extreme benefit to trucking companies. A longer life span means dramatically lower maintenance and replacement costs as well as a reduction in downtime.

We have LED lights for Peterbilt, Kenworth, Freightliner, Volvo, International, Mack, and Western Star trucks as well as box trucks, tow trucks, dump trucks, and more. Options include LED tail lights, LED brake lights, LED marker lights, LED reverse lights, and LED clearance lights. These truck lights are available in a wide variety of styles, shapes, sizes, intensities, and connector types. Take a look through the categories below to see some of what’s available, and visit the links for complete product lists.

All of our LED truck lights meet DMV FMVSS 108 requirements and are protected by a lifetime warranty to guard against manufacturer defects and malfunctions. Mounting accessories are available under the accessories tab on each product page.

Options include multi-function combo boxes. Rear combination lights can be mounted vertically or horizontally on either side of box trucks, tow trucks, dump trucks, trailers, and flatbed trucks. The all-in-one lamps can be used as tail lights, brake lights, parking lights, turn signals, reverse lights, and running lights. Light heads can be rearranged for customized positioning.

Multi-function combo box lights have red and white LEDs and can be used as rear reflex reflectors, turn signal lights, hazard warning lights, reverse lights or backup lights, brake lights, and tail lights. Separate LEDs are positioned on the bottom of the box for license plate illumination.

If you’re planning on selling your home in Maryland, Virginia, or Washington, DC, it’s extremely important that you make sure everything is up to code. Some code violations are illegal, others can be dangerous—some are both!

Wiring mistakes – most wiring mistakes are made by handymen doing electrical work instead of certified electricians. Among the worst we’ve seen are electrical systems that were hooked up using extension cords instead of dedicated electrical wires!

Overcrowding with too many wires – overcrowding is another sign of a contractor who didn’t know quite what they were doing. Since poorly maintained wires can get hot, any place where there are masses of wires packed tightly together can create a major fire hazard.

Exposed wires or junction boxes – frayed or exposed wires can pose a major electrical safety hazard and should be either replaced or patched up. And while junction boxes should be within reach, they should not be so easily accessible that they can accidentally be touched.

Ground Fault Interrupters (GFI) outlets or breakers not working properly – GFI outlets are especially important for the kitchen, bathroom, and anywhere else where water or humidity could create an electric shock risk. If these outlets are not working properly, you could be in danger without even realizing it!

Mixing line- and low-voltage wires together – the National Electric Code (NEC) expressly forbids this, but we often see it, especially when dealing with HVAC installations.

Light fixture or ceiling fan installed without a junction box – junction boxes are required to be installed so they are always accessible and are used to run multiple conductors in two or more directors. The most common problem we see is junction boxes installed out of reach in a concealed wall or ceiling space.

Missing or damaged switch and outlet covers – plate covers on switches and outlets are important for preventing electric shocks. If you’ve recently painted or remodeled the room, you may have taken the covers off. Make sure you put them back on!

Damaged outlets – damaged outlets can cause appliances and anything plugged into the outlet to malfunction and can also create a major fire risk.

These days, many home sellers are seeing the value of having an electrical inspection prior to putting their home on the market. Having the ability to correct any electrical code violations ahead of time may help in avoiding delays in the negotiation and sales transaction.

If you’re planning on selling your home in Maryland, Virginia, or Washington, DC, call Kolb Electric! We can perform an electrical inspection and make any necessary electrical code corrections. Don’t wait—call us today!