Smoke alarms are your first line of defense in the event of a fire.  Smoke alarms come in two main different types.  Ionization and photoelectric.

Ionization smoke alarms have a ionization chamber inside the smoke alarm unit itself.  The smoke alarm chamber consist of two plates about a centimeter apart.  One of the plates is charged positive by the battery or transformer in AC models and the other plates is negative.  Alpha particles constantly released by the americium knock electrons off of the atoms in the air, ionizing the oxygen and nitrogen atoms in the chamber. The positively-charged oxygen and nitrogen atoms are attracted to the negative plate and the electrons are attracted to the positive plate, generating a minuet, constant electrical current. Upon smoke entering the chamber, the smoke particles attach to the ions and neutralize them, so they do not reach the plate. The drop in current between the plates triggers the alarm.

Photoelectric smoke alarms have an internal chamber with a light beam.  When smoke enters the chamber it blocks the light from entering the photoelectric sensor causing an alarm to sound.  Smoke may also cause the light beam to scatter creating an inconsistent pattern on the photocell causing the smoke alarm to sound.  Photoelectric chambers can detect a smoldering fire faster than most ionization type smoke alarms.

Smoke alarms are most commonly seen as battery operated units in older homes.  Battery units are also common in situations were a smoke alarm is added and AC power is not accessible.  AC units power the smoke alarm with standard AC current from the homes wiring.  AC units are common in newer homes.  Current new construction code requires smoke alarms to be AC with a battery built into the unit as a back up power source.

Current smoke alarms used in new construction homes are AC and battery combination units as stated above.  They also require a dual sensing smoke alarm unit.  The most common dual sensing combination is either photoelectric and ionization or a combination ionization and carbon monoxide unit.

Carbon monoxide also called the invisible killer, is odorless and colorless gas.  Carbon monoxide is most commonly created in the home when unburnt or improperly vented heating equipment releases the gas.  Carbon monoxide can be created from natural gas heaters, wood burners, and oil burners.  Carbon monoxide can also enter the home from the exhaust of a running vehicle or generator.

Carbon monoxide effect some people easier than others.  People such as elderly, pregnant women, infants, and people with emphysema, asthma, or heart disease can suffer the effects of carbon monoxide much quicker than a healthy person.

We can install most major brands of smoke alarms.  We offer smoke alarm installation for Kiddie and First Alert.  In addition to Kiddie and First alert, we also offer smoke alarm installation for USI, and BRK smoke alarms.  We offer smoke alarm installation for AC units with batter backup, AC only units, and battery only units.  We highly recommended the AC with battery backup units for superior performance.  We also offer smoke alarm installation for interconnected units.  This type is highly recommended.  They function as following:  When one smoke alarm unit goes into alarm mode it causes the other smoke alarms to sound an alarm.  If access limits being able to connect the smoke alarm units we offer a wireless type smoke alarm installation to insure the units are properly interconnected.

Underwater lighting gives your pool a charming, romantic look at night. It also makes swimming after dark more enjoyable. Such lighting can be a big help when you’re trying to test your pool water after dark. However, changing these underwater bulbs when they burn out isn’t quite as simple as changing a household light bulb.

When you go to replace a pool light bulb, keep in mind that working with water and electricity requires special attention to safety. Be sure to switch off the electricity to the pool area, either at the breaker box or the main shut-off switch. You will need your new bulb, a lens gasket that fits your pool light fixture, both a Phillips-head and a regular screw driver, a couple of towels, and a circuit tester.

The type of bulb you need is generally written on the edge of the fixture. If this information is worn, you can measure the diameter of the existing bulb and compare that number to common replacement bulbs. It’s important that the replacement bulb be the right size to prevent water from entering the bulb fixture and shorting out the bulb.

After you have the right equipment assembled and the electricity off, it’s time to switch out the bulbs. Start by removing the bulb from its casing. Most light fixtures have a screw at the top that holds the unit together. Next, pull the bulb assembly from its casing. There should be a long enough cord so that you can set the whole thing on the deck outside of the pool while you work.

Now that you have the light out of the pool, gently remove the face ring, gasket and lens so that you can get at the bulb. Once that is done, the next part of your pool light repair is to carefully unscrew the bulb and wipe off any moisture. Clean the entire assembly gently to remove any corrosion, but don’t scrape it or the unit may not seal properly when it’s put back together.

Finally, insert the new bulb, install the new lens gasket and put everything back together. Return the light fixture to its casing and replace the set screw. Turn the electricity back on and make sure that the light is working properly.

At Kolb Electric, we want you and your family to enjoy your swimming pool—at night as well as in the daytime. If you don’t feel comfortable replacing the pool lights yourself, we’re here to help. In fact, our licensed electricians are experienced in all aspects of pool light replacement, so we can help you with any service you require. To schedule an appointment for your Maryland, Northern Virginia, or DC-area home, call us at 877 287-1179.

Your garbage disposal is a lifesaver.  It is a remarkably quick and convenient way to dispose of food waste.  In fact, many garbage disposals can withstand years of daily use without a beat.  But how do you keep the not-so-silent hero of your kitchen healthy?  If properly monitored and maintained, your garbage disposal can dodge the serious problems for years to come.  Continue reading for best practices and tips for extending the life of your garbage disposal.

Run Cold Water During Use

The cool shock from cold water will cause the food that is in your drain to harden.  This is ideal, since hardened food is much easier for your garbage disposal to grind up.  Many people get in the habit of running hot water down their drain, however we advise against using hot water for your garbage disposal as the high temperature can melt your food waste.  Melted food waste will adhere to the pipes of your sink and garbage disposal, which in turn can cause a clog or a more serious issue.

Watch What Goes Down the Drain

Certain materials should never come in contact with your garbage disposal.  Obviously, metals and plastics should be thrown away instead of shredded down the drain.  Many other things should be kept away from your disposal, including fibrous vegetables, bones, oils, and grease.  Here is a list of some of the things that should never be placed in your garbage disposal:

Add Some Citrus

Now, time for something that we encourage putting in your garbage disposal: citrus fruits!  Whenever you peel a lemon, lime, or orange, toss that peel down the drain of your sink and let your garbage disposal work its magic.  The peel will help to eliminate some of the food waste that is stuck to the blades and interior of the garbage disposal.  Additionally, the fresh scent will suppress any odors coming from the garbage disposal.

Occasionally Use Boiling Water

Remember when we said that hot water is not the best option for garbage disposal use?  That remains true.  However, if you are trying to wash away any excess food stuck in your system, a pot of boiling water down the drain once a month will do the job.  Keep in mind, the heat does cause the food that is in your garbage disposal to melt, which can cause clogs.  It is imperative that you do not pour boiling water down your drain more than recommended.

Keep It Running

Many people will shut off the garbage disposal after they hear a change in sound, generally indicating that the food is gone.  This method will leave bits and pieces of your food waste in the disposal, which after time can cause a clog.  To avoid this issue, we recommend running the disposal for an extra two minutes with cool, running water.  This ensures that all pieces of food waste are eliminated down the drain.  As an added aspect of protection, pump a small amount of dish soap into the disposal.  The grease-fighting powers of the dish soap will both clean the disposal and finish the job by sweeping away any stubborn pieces of food waste.

Photovoltaics employ solar panels to create energy. Solar power remains a rapidly growing field in the renewable energy sector. It has the potential to completely power our world and drastically reduce greenhouse gas emissions.

Aside from large-scale solar plants, photovoltaics can also be found in a variety of places from calculators and watches to electric planes and the space station. The lack of moving parts makes them valuable in portable devices and in areas without other sources of power. And because the only source of fuel required is sunlight, they can produce power continuously for years without maintenance. Thanks to the falling cost of installation and the potential savings on utility bills, many homeowners are now choosing to install rooftop panels on their own homes.

As the cost per watt of solar power continues to plummet, new solar technologies are emerging. Therefore, the second generation of solar panels, known as thin-film PV, consist of extremely thin panels only a few micrometers thick. These panels are much more versatile and have found their way into Tesla’s solar roof tiles, among other things. They are less efficient than first-generation panels, but much cheaper, simply due to the fact that they require less material to manufacture.

Most noteworthy, third-generation high-intensity solar cells are also in development and promise to be even thinner and extremely efficient. Perovskite PV cells and Organic and Polymer Photovoltaic (OPV) cells are some of the newest third generation solar technologies and use materials other than crystalline silicon.

Photovoltaics remains a quickly growing field that has the potential to reduce greenhouse gas emissions. This technology provides energy independence, while powering the world reliably and efficiently.