One of the most popular tools in any home is the extension cord.  For a long time, rooms would be built with only one or two outlets, creating the need for additional power strips and extension cords as we moved into a more digital world.  As more devices found their way into our homes, the NEC updated standards for home construction to require additional outlets and electrical accessibility in each room.  Unfortunately, most homes still lack the proper number of outlets, and when a cable can’t reach, most of us will reach for an extension cord.

Most of the time, this isn’t a problem.  Extension cords function exactly as their designed to.  When you need a longer cord to place a fan or give a little extra reach to your vacuum cleaner, there’s nothing dangerous going on.  Where extension cords become risky is in their overuse.  Many people buy the longest, cheapest cord they can find and this is where danger sets in.

Electricity and metal have a very interesting relationship.  As current, the flow of electricity over a conductor, increases in a wire, the temperature increases.  Current is also adjusted as resistance increases to keep power at the same level.  When you add wiring to a circuit, the resistance of the wire itself stacks with the rest of the components on that circuit.  While one electrical cord doesn’t add much in the way of resistance, multiple cords will continue to increase the amount of power being used in the system.  As the current increases to keep up with the new demand, the temperature in the wiring also increases.

This relationship is used to great effect in your circuit breaker, where the difference in heat forces a breaker trip that protects your system.  In an extension cord that isn’t designed to handle the load being placed on it, insulation melts and fires can start.

Keep in mind that extension cords are always temporary.  Never use an extension cord for anything permanent.  They are designed to help you reach electricity for a task and nothing more.  When in doubt (or if you hear buzzing coming from the wiring, socket, or circuit breaker) switch to a higher amperage circuit and a lower gage wire for your extension cord (the lower the gage, the thicker the wire and the more current it will be able to handle).

According to the Electrical Safety Foundation International, Guidelines for using an extension cord are as follows:

Remember that the more power you need, the more current you’ll be using.  Any device that includes a motor or heating element will either need an industrial-grade extension cord (power tools) or should not be used with an extension cord at all.

For the best in quality electrical repair work and installations, contact the professionals at Custom Electric!  Be sure to check back here each week for helpful advice, news, and guides or follow us on Facebook and Twitter!

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Can I get a Free Estimate over the phone? If you want a Free Estimate, call us at (800) 990-9490. We give Free Estimates either over the phone, or, if needed, after looking at your job. We can almost always give you a Free Estimate over the phone if your job is installing new items such as: • And all other installations of new electrical components (as opposed to repairs)

How can you give me an over-the-phone estimate for a job as big as a house rewire or an electrical panel upgrade? We’ll do a brief interview with you to find out the size of your house and some other basics. We can give you a rough estimate over the phone. Then if you want to take the next step, we can send an electrician to your home or business. He’ll look over your electrical system and give you a firm bid in writing. If the bid is acceptable, we’ll schedule the job with you.

Can you give me an over-the-phone estimate for installing a charger for an electric car? Yes, these can be as low as $200, and they go up from there. We’ll ask you the distance of your garage or carport to your electrical panel. If you’re interested, we’ll then send an electrician out to see the job. He’ll determine where the charger could go and also check that your electrical panel has sufficient power. The price of the job will depend on the distance from the electrical panel and whether your panel needs to be upgraded for more power. He can give you a firm written bid after looking at the job.

Are there times when you can’t do a Free Estimate? If you need something fixed that used to work, we’ll need to do on-site troubleshooting of your electrical system and charge for the electrician’s time. Within a half hour to an hour, we’ll know the extent of the problem. At that point, if he hasn’t already fixed the problem, the electrician can give you a firm bid in writing before doing more work. Often, by the time the electrician has figured out the problem (within a half hour to an hour or so) — let’s say it’s a loose wire — it will take another minute or so to fix it. In fact, he may not be certain that the loose wire was the entire problem until he tightens the wire, the circuit now works, and the job is done.

Why can’t you give an estimate for troubleshooting jobs? When a component in your electrical system no longer works, there can be variety of reasons, each requiring a different amount of time to fix.

Let’s say you have a swimming pool and the pool light no longer comes on. If the light switch has broken and needs replacing, we’re talking about an inexpensive part plus half an hour of labor. If the light fixture or the circuit breaker is broken, these parts are bigger expenses. If the wire feeding the light has a short circuit, that could mean digging up the wire that runs underground, cutting the concrete pool deck, replacing the wiring and its protective housing (electrical conduit), cutting a new trench and re-burying the wire, and finally, patching the concrete pool deck. That could be hundreds of dollars.

So, the symptom of the pool light not working doesn’t tell us the cost. We’ll need to troubleshoot on-site for a half hour to an hour, find the cause, and then we’ll be able to give you a firm bid price.

What is the difference between an estimate and a bid? We can give you a Free Estimate over the phone without seeing the job if your job is a new installation. If the estimate is acceptable and you want to move ahead, we’ll set an appointment with you to see the job. Once we’ve seen the job and checked out the details, we can give you a firm written bid in writing. It’s a firm price with no surprises for you.

How can I get started? Call us at (800) 990-9490 and ask for a Free Estimate.

For more about my company, The Electric Connection — all the stuff you wanted to know but were afraid to ask — click here. If you’re interested coupons for electrical work, for example, $50 off installation of a Whole House Surge Protector in the L.A. area, click on our coupon page.

Kim Hopkins, Owner The Electric Connection