So, the answer . BUT please note that the BATTERY BOX of string lights is not waterproof ! UL listed for wet locations. Below is a quick reference chart listing popular Christmas light strings, wattage examples and maximum strings connected. Similar to Christmas string lights, they usually plug into a regular electrical outlet. Tent Lights (incandescent): 5 amps X 2-6 (depending on how many lights you're working with) Perimeter Lighting: 2 amps per 20 LED fixtures. 6 Watts x 15 lights = 90 Watts per hour. Buy a larger transformer than you'll initially need so you can add lights later as your landscape (and imagination) expands. But it's actually very useful for visitors to see the walkway. This is to prevent voltage drop. When comparing outdoor Christmas decorations, the typical light user will use 1 to 3 wreaths, a garland, and a total of approximately 10 strings to wrap their outdoor trees. However, we rarely stop at one rope. But if you are going to have a long-term light, taking the size of the bulb into account, then you will need a 100 watts lamp. A 12V/30 watt supply translates into a maximum of 2.5 amps of current drain (12V x 2.5A = 30 watts). Typical Heavy Usage Cost Outdoor LED Globe String Light 25ft Weatherproof: 4. Then divide the 1000 watts by 125 volts to get a total of 8 amps. Zip ties are a good way to secure a strand. In our example, incandescent bulbs will utilize 4.08 while LED bulbs will be 0.69. If you have removed the bulbs, you should put them back in the sockets. There is no limit to how many lights there are. These battery-operated string lights are 36 feet long with 100 LED bulbs, and the control box allows you to select between eight modes for different lighting effects. LED bulbs use about 1 watt per foot in power while a traditional rope light uses close to 3 watts of light per foot. How many lights can be put on a 12-2 gauge wire. $ 137.99. For running Christmas lights, you want to make sure that any cord you use is rated for outdoor use. Here's an average breakdown for the power needed to fuel important wedding components: DJ Equipment: 10+ amps. 3 amps is only 1.8 amps, round up to 2. 1. The watts per foot can be found on the product page of the strip light. Enter any two of the electricity metrics (watts, volts, amps, ohms). Each one can take 1800 watts. But often you'll need to connect strings together. The power consumption of LEDs used in LED light bulbs is usually in the 0.1-Watt to 1-Watt range, but there are many models outside that range that consume far more or less (for example: I used 3.6-Watt LEDs to build my solar lantern, an unusual practice). This copper wire string lights is bendable very easy to use in different situation. Christmas lights don't have to use a lot of energy. However, you will have to keep one thing in mind. A small 6-by-8-foot patio space typically requires 25 to 50 feet of string. Easy to install- This string light features 3ft of spacing between each bulb. Step 4 - Calculate the estimated power usage This calculation is important for determining the size of the power supply needed. Many brands of rope lights are rated for either or both indoor and outdoor use. Dance Floor Lighting (Non-LED): 10 amps. Remote Control String Lights 48ft Dimmable: 7. That's between $108,000 to $144,000 worth of equipment! Includes 2 replacement bulbs and one replacement fuse. These battery-operated string lights are 36 feet long with 100 LED bulbs, and the control box allows you to select between eight modes for different lighting effects. Turn an outdoor space into another living area. Although it has become a standard for the amount of light to expect from a bulb, wattage is actually a unit of measure for energy use. 1440/100= 14.4. This classic outdoor string light set features 10 mini white lanterns strung on a 9.8-foot-long wire. We recommend 12-gauge or 10-gauge wire for long distances. Just secure the male end to the female end of each string. For example, select a transformer rated for 400 or 500 watts if you have landscape lights equaling 300 watts, such as six 50-watt pathway lights. 100 lumens is equivalent to about 20 watts. Again, if you want to connect twenty landscape lights to a low volt transformer, and the lights are pulling 4W / 7VA / 35 Watts of halogen power draw on the system, you would need a 300 watt transformer. 100-watt light: 1920 100 = 19.2; 19 lights. LED bulbs would only be 690. Make sure that your stringer and your bulbs are compatible. Use the answers to #3 and #4 to determine how many lights you can use on your house in total and on any one outlet in particular. Traditionally, a string of 48 mini-bulbs uses 2.5 volts. This led string light with silver wire which is Waterproof and very safe for hand touch, DIY . Let's have a look at the amount of lumens you'll need for all the outside spaces you can think of in your yard If you have a string measuring 200 feet, multiply 200 feet by 5 watts to get the total number of watts needed, which is 1000 watts. However, a comparable strand of LED lights used only 2.4 watts and cost $0.21 less than a quarter! The US Department of Energy calculates that the cost of lighting a 6-foot Christmas tree for 12 hours a day for 40 days comes out to $2.74 (assuming a cost of $0.119 per kilowatt-hour). Their researchers found that a string of 25 incandescent bulbs used 175 watts of electricity, amounting to $15.12 over the Christmas season. 7) Hang your string lights. A 15A circuit can hold up to 1400 watt of lighting loads. For outdoor lighting, you'll need at least 50 lumens for low background lighting, all the way up to 2400 lumens for driveway and security lights - plus many options in-between. For the incandescents, I get a power of 20.0 Watts or 0.2 Watts per light. You read that right! Party lights can be hung between your building and a post on . Bollard lights are a popular choice for effective path lighting. Lighting a 10ft tree would cost $5.64 per month. Make Sure Your Bulbs Fit Your Sockets. How many LEDS can you have on one circuit? After calculating total wattage we can see that electrical usage is minimal. 35-light Mini Set = 120 V, .12 amps, 14.4 watts. If you have a whole lot of space to cover, consider this extra-long string light option from Wayfair. Solar-Powered Globe String Lights with E12 Socket: 6. Waterproof LED Outdoor String Lights: 2. ! Standard 100-watt bulbs produce about 1,600 lumens. Outdoor string lights are designed for use in outdoor weather and provide waterproof string lights for use on a patio, deck or in a backyard. In addition to the improved performance, the 100 watt power supply from Philips Hue offers another little gimmick: There's not only one connection on the . A standard 40-watt (40W) bulb is equal to 400+ lumens. It may be best to use them sparingly if you put them outdoors. This string light features 15 clear 11-watt incandescent light bulb on a 48-foot long industrial strand. 6 times . How many string lights can you connect? There are dozens of light bulb types, shapes, colors and finishes. Adding string lights to any outside area of a home gives it an instant decorative effect. Click calculate and all empty values will be calculated. In the US, the standard power from an outlet is 120 volts. 2. Total watts for incandescent bulbs would be 4,080. Click here to get options and prices on . This explains why mini-light strands are so sensitive to the removal of one bulb. Consider using a timer for flood lights as well as a motion sensor. Large Landscape Lighting Design System Power Draw Formula. LED lighting, however, has turned things on their head. For this reason, LEDs are a good way to go, especially if your space requires a long run. Feit Electric String Light sets are available in color changing or classic white in a variety of lengths . Enter either the bulb count or the total amps. This low power draw allows you to connect multiple strands together without the worry of exceeding string capacity, making them a perfect choice for lighting projects covering long distances. Zip ties are a good way to secure a strand. LED Color Changing String Lights Remote Control: 8. Wayfair. Lets use 1440 as a conservative estimate. If you are going to have a regular-sized bulb in your bathroom, you will need a 60 watts lamp. Attach the lights to the cup hooks when starting at the location closest to the power source, and use an outdoor extension cord if necessary. In addition to the improved performance, the 100 watt power supply from Philips Hue offers another little gimmick: There's not only one connection on the . 96ft Outdoor String Lights with Shatterproof Bulbs: 3. YES! Let's say we're using 10 strings of 1,000 lights. For example, a large, 2-meter-long Christmas tree will usually hold 2-3 strings, consuming about 150 watts. Or # of bulbs x bulb wattage = total wattage. In general, LED rope lights are rated for 100,000 hours while a comparative incandescent rope light is rated for 25,000 hours. Today, the two main kinds of Christmas lights . 3. It has stood the test of time because, for standard bulbs, more energy has always meant more light. Ruggedly built to last- Our string lights are constructed with durable waterproof materials that won`t wear or tear as you use it continuously all year round. Solar LED path lighting has come a long way. The Architectural Series uses 4.4w/ft. How many volts, amps, and watts are in incandescent mini light sets? For the under cabinet lights, the sections are 1 - 2 meters long and only use a couple of hundred milliamps of power. Assuming a power per bulb of 0.447 watts this would give a total power of 3.9 . Volts, Amps, and Watts of Christmas Lights. Now that you know why you should use 12-2 gauge wires. Perfect lighting for holiday celebrations, weddings, anniversaries and more. This increases to an almost 93% savings compared to regular C7 lights running all day! Another factor that contributes to the cost of electricity is the type of lights that are used. Heavy duty construction is perfect for use year round The bulbs are divided by voltage in 2 main categories: - Line Voltage: 120 Volt. 100 lumens is considered bright enough for most walkways including commercial properties. The unfrosted 11 Watt bulbs produce a warm, cheerful glow. For 20 AMP you have 20A*120V or 2400 watts and 15 AMP you have 15A*120V or 1800 watts. However that doesn't take into account the cost savings and tax credits you will receive by installing solar energy systems in your area. Commercial grade string light is perfect for lighting outdoor porches, patios, or any outdoor living area around your home or business. Total Amps is multiplied by 120%. On the other hand, if an average LED string light set uses 10 watts, then 1440/10=144. When you're shopping for outdoor light bulbs and looking for brightness, compare the lumens instead of the watts. Energy-saving fluorescent lamps are about 15 watts. The load of the fixture is the most important factor in determining how many lights a circuit can hold. 25 watts used/1,000 = 0.025 kilowatt-hours. How many amps does a 4 foot LED light draw? Avoid over lighting. Amps x voltage = wattage. How Long Each Day: 7 hours Cents per KWh: 12 (varies widely depending on your area) # of days: 45 days (Thanksgiving to New Years) Based on the above numbers, here's what we get: LED Christmas Lights - 237 watts - $9.00 per season Incandescent Christmas Lights - 2,800 watts - $105.75 per season That's a dramatic difference! Applications. The best wattage for outdoor lights is 40 watts and lower. Starry String Lights for Wedding Indoor Outdoor Christmas Patio Garden Decoration, White. For outdoor lighting, you'll need at least 50 lumens for low background lighting, all the way up to 2400 lumens for driveway and security lights - plus many options in-between. The Washington Post investigated LED lights as compared to incandescent lights. 0.075 x 35 days used = 2.625. The Feit 4' LED shop lights draw about 0.3amps each according to the manufacturer. Watts measure the work electricity does per second. 100 bulbs X 7 watts = 700 watts Once you have your total wattage, you can then determine your amperage by simply taking the total watts and dividing by 115 volts: 700 watts/115 volts = 6.09 amps Based on these calculations, the 100 ft section of the C9 light line would draw 6.09 amps. While the above are the main light bulbs voltage for home and garden application there are bulbs used for special application that operate at different voltage as 6v, 24v, 36v etc. For a 2500 sq ft home, you would need 9000-12500 solar panels. As a reminder, a standard classic bulb has a power of 60 watts. 40 to 80 watts are great for brightening areas like driveways, smaller yards, and the inside of your home. Wattage is the best way to tell you how many sets of Christmas lights you can connect end to end. The further you get from the transformer and its power supply, the more resistance occurs in the circuit which causes the voltage to decrease. The LED strand is 2.4 Watts or 0.048 Watts per light. They're illuminated with warm white 0.6-watt LED bulbs, which look great in any outdoor setting. For instance, you have 10 pieces of 100-watt LED bulbs. 0.025 kilowatt-hours x 3 hours illuminated = 0.075. LED Power Consumption (In the context of 120-Volt light bulbs) Light ropes and strings can bring life to your party. Now just connect the lights to all the hooks, and that's it. For yards or gardens, the maximum recommended wattage is around 80 watts. Philips Lumec manufactures a number of 82 watt LED fixtures recommended for gardens or residences. It breaks the circuit, so none of the bulbs can light. Since Christmas lights draw continuous power for hours at a time, it's important to build in additional safety measures for electricity . Use outdoor-rated bulbs and check the size of the bulb bases/sockets to ensure a proper fit. When mini-lights were first introduced, any bulb burning out would darken the entire strand. To get the kWh for the whole month, you need to do this calculation: 10 bulbs x 100 watts = 1,000 watts or 1 kW of lighting 12 hours of daily use x 30 days per month = 360 hours of use 1 kilowatt x 360 hours of use = 360 kilowatt-hours of energy consumption LED Light Energy Costs Simple to use and install. For example, incandescent C7 lights typically require about 5 watts per bulb. Example: A house with 15-amp circuits. When a filament in one bulb blows out, it creates an open circuit in the wiring, so electricity is not passed along. 50 . 6 hours per night = 540 Watts used each night. On the other hand, if an average LED string light set uses 10 watts, then 1440/10=144. Outdoor lights look best as accents, broadcasting pools of light. Typically, the higher the wattage, the higher the lumens, and the more light output. For security lights, you can go for a brighter flood-light bulb. The average 15 light LED outdoor lighting system should only cost less than $22/year in electricity to run. Therefore, your circuit can only handle 14 incandescent light strings connected together. and many of them look the same. *Calculated based on an average 6hrs of use for the 35 days spanning from Thanksgiving through the end of December Based on this chart, you can see just how the types of lights you buy will impact your energy use and costs. Exceptionally vivid and energy efficient, LED bulbs use approximately one tenth of the power a traditional bulb uses. Mid-Range Wattage Lights To bathe a small yard or driveway in gentle to moderate light, select a lighting fixture that accommodates 40 to 80 watt bulbs. If the bulbs you're using are 50 Watts each, then you can only use one strand. There are also three main bulb socket bases which are commonly confused. Feit Electric 48' LED Filament String Light Set Indoor or Outdoor Use, Suitable for Wet Locations; Includes 24 Screw Base LED Bulbs Plus 2 Spares (Per Pack) Decorative Filament LED Bulbs 2200K, Shatter Resistant Bulbs; Heavy-Duty 16/3 Cord, 24 Sockets 2 ft. Apart (Per Pack), Connect Up to 45 Sets 2160ft; You can load 450 Watts on your 12-2 gauge wires. It refers to a light bulb's brightness, intensity of light and visible light emitted. Larger tools like an air compressor would need a 10-gauge. If you just have one strand of lights, you're done after you attach the lights with cable clamps or hooks. 2.625 x 12.3 cents = 32.3 cents. This means lighting a 7ft tree would only cost $3.64 per month. Good Electricians will only use 80% of the circuit and leave a 20% safety margin so you have 1920 and 1440 watts respectively at your disposal per circuit. For a 12-2 gauge wire, the number of lights will be 3015=450 Watts. There is no specific wattage for bathroom lights. Get enchanting warm, incandescent lighting for your outdoor events and parties. UL listed lights state a maximum of 210 watts can be connected when using 22 gauge wire, and a maximum of 420 watts can be connected when using 20 gauge wiring. For larger bulbs such as C7, C9, etc., string together no more than 50 bulbs total. Let's determine how many lights you can put on your 12-2 gauge wire, you can use the following formula-Watts = Volts x Amps. And lighting a 12ft tree would cost $7.28 per month. 48 times 2.5 equals 120, and so it logically follows that a single strand will equal the standard number of volts from an outlet. Large Landscape Lighting Design System Power Draw Formula. Chances are that you will use a combination of these to light your house, both inside and out. Same with other watts: 75-watt light: 1920 75 = 25.6; 25 lights. This 24 ft. long string of 12 incandescent lamps can be combined with up to 9 other strings for a total of 216 feet of light. 540 Watts per night x 365 days per year = 197,100 Watts 197,100 Watts/1,000 = 197 kWh 197kWh x $.11/kWh = $21.67 per year! The German reseller Click-Licht.de currently states a delivery time of around two weeks, and the 100 watt outdoor power supply will be available again from 17 July at a price of 56.39. They are 7.5 watts for the whole string. Solar Power Outdoor String Lights 44 Ft: 5. Flooding sitting or planting areas with "stadium . That means you can have 144 light strings connected together if they're LED!Oct 2, 2019. Pick a 16-gauge extension cord for light runs of 25 feet or less and go with a heavier duty 14-gauge cord for runs over 25 feet. For example, if you plan to string together 10 18-watt light fixtures, then you'll need a transformer with a wattage output of at least 180. . Ideal for outdoor accent lighting on patios, porches, walkways, and restaurants. If you'll be installing 400 watts of lights, buy a 600-watt transformer. In contrast, lighting the same tree with LED minilights only costs $0.82, making LED string lights significantly more energy efficient. 1440/100= 14.4. If a typical system is lit for 4 hours at ~ 125W (see chart below) - then it will use kWh per night (125 W X 4 h = 500Wh or kWh ) at an electrical cost of less than 10 cents. These are incredibly bright and efficient lights that I have used for under-cabinet lighting and for accent lights. . Connect the Lights Attach a plastic "while-in-use . That means you can have 144 light strings connected together if they're LED! Attach the lights to the cup hooks when starting at the location closest to the power source, and use an outdoor extension cord if necessary. 5 x 25 watts x 7 hours (mini lights) = 875 watts 10 x 500 watts x 7 hours (outdoor string lights) = 35 000 watts 240 watts x 7 hours (Santa) = 1,680 watts 5 x 550 watts x 7 hours (icicle lights) = 19,250 watts Total cost per day - 57 kWh (56,805 watts) at $0.13 per kWh= $7.4 per day or about $222 for the season! . Again, if you want to connect twenty landscape lights to a low volt transformer, and the lights are pulling 4W / 7VA / 35 Watts of halogen power draw on the system, you would need a 300 watt transformer. As the other two posters have indicated, it depends. Tavis 100' Outdoor Globe String Light. For example, a 24-socket string with a maximum wattage rating of 1,200 can support up to 50-watt bulbs (1,200 divided by 24 is 50). For a 65-watt light: 1920 65 = 29.5; meaning, only 29 lights with 65 watts are allowed in a 20-amp circuit breaker. As an example, let's say your patio stringer 24 sockets and has a max run of 1,200 Watts. How Many Lumens are Needed for Outdoor Lighting A lumen measures the amount of light that comes from a bulb. 80% of 1800 watts is 1440 watts (the safe limit). For better understanding, here's a video from Bevin's Builds explaining further: On the other hand, CFL or . These aren't as bright, so he would probably have to double the light density to maybe 40 lights per square meter. You can learn more about this in the chapter titled: Get the Right Bulb. Up to 40 watts is ideal for lighting pathways, garden beds, and other landscape areas. - Low Voltage: 12 Volt. (20 lights X 7 VA = 140 voltage Amps, so it's best to use a 300 Watt) since 150W . If you have removed the bulbs, you should put them back in the sockets. Recommended lumens for security flood lights . If your circuit is 15 amps, that means you can only use 1440 watts total on it. Multiply the total wattage by 0.001 to find the total kilowatt-hours of electricity that will be used. The rule of thumb is 30 watts per square foot. For lining one side of an average balcony or small porch, a 10-foot string of outdoor patio lights may do the trick. And the lovely decorations on the walls and balcony - at least twice as much. Feit Electric 48' LED Filament String Light Set Indoor or Outdoor Use, Suitable for Wet Locations Includes 24 Screw Base LED Bulbs Plus 2 Spares (Per Pack) Decorative Filament LED Bulbs 2200K, Shatter Resistant Bulbs Heavy-Duty 16/3 Cord, 24 Sockets 2 ft. Apart (Per Pack), Connect Up to 45 Sets 2160ft