The term “light box” can mean a few different things, but from a lighting perspective it typically refers to a backlit display panel. Light boxes are most commonly used for advertisements or other commercial displays. You’ve probably seen them in trade show booths, restaurants, airports, nightclubs, offices, hotels, museum exhibits, and retail shops. That’s right, light boxes are everywhere.

One of the most common uses for light boxes is the commercial advertisement. You see these in large spaces like terminals or outdoors at bus stops. They capture the attention of passers-by and create lasting impressions. The light box pictured below is one of the biggest I’ve ever seen.

One of the most obvious places you’ll see light boxes are along the walls inside and outside of movie theaters. Sometimes lines of light boxes stretch incredible distances, advertising all the movies being shown in large theaters.

In fact, light boxes can be a fun addition to any home and can be used for as many purposes as you can imagine. Sure, you could illuminate a movie poster of your daughter’s favorite movie. But you could also make a custom sign saying whatever you want. I really like the light box below, created at home for home.

With winter here, you will probably be decking your halls. That requires electricity in places you don’t normally need it. You will also want to add more light strands than you have outlets for. What do you do? You pull out the extension cords and get busy. However, extension cords are not always safe. There are rules you should follow when it comes to using extension cords to power your decorations or that space heater by the couch. Your electrician in Beverly Hills has some helpful safety tips for you. You can call the crew at The Electric Connection to learn more.

The most important rule is to only use extension cords designed for the outdoors outside. These cords are insulated and can withstand the rain and cold. Indoor extension cords do not have the same insulation and can short out if it rains explains your Beverly Hills electrician. You can identify the cords by looking at the information printed on the cord or simply by checking to see if it is round or flat. Round cords are generally outdoor and flat are indoors.

Extension cords should not be run along high traffic areas. You don’t want them being walked on, which could damage the cord and result in a short. Do not overload the extension cords either. If you are running something big, like an inflatable, it should be the only thing plugged into the cord. Always keep in mind, extension cords are not a permanent solution. If you need more outlets, call an electrician. Beverly Hills homeowners can rely on The Electric Connection to listen to their needs and find a solution.

We often find there is a lot of confusion between Lumens and Foot Candles and Lux. And even more confusing is how some represent conversion from traditional light sources like Metal Halide and High Pressure Sodium in terms of watts, and not lumens. So why all the confusion. Well, it may be because those who represent this conversion are trying to avoid letting you know about the efficiency of the LED lights, so they claim you can replace X watts of Metal Halide with X watts of LED. What they should really say is that you can replace a 400W Metal Halide with X lumens, and their lights only need Y watts to produce these lumens. We’ll dive into this a little later, but lets first talk about lumens vs foot candles vs lux.

What is a lumen? A lumen is a measurement of light related to (1) fixture or bulb. So when we talk about lumens, we say that a fixture or bulb creates (X) lumens. These lumens are determined by sophisticated measurement equipment.

What is a foot candle? A foot candle is a unit of measurement at a specific location in a room or outdoor location that is created by 1 to many lights. It is a cumulative reading of 1 to many light sources at a specific location. It is both real and calculated. Real in the sense that you can take a light meter and walk to any location in a room or outdoor location and take a reading that represents the amount of light recorded from all contributing lights or fixtures. Calculated in the sense that you can use software to predict the foot candles of a space based on the placement of lights within the simulation.

What is lux? Lux is identical to foot candles. It is a measurement of real or calculated light, but it is done on a different scale. As a rough estimate, 1 foot candle = 10 lux.

So, simply stated, lights produces lumens, and the cumulative lumens of all lights are then determine the foot candle or lux measurement of light at a specific point in an indoor or outdoor space.