Outdoor Lighting 101
Add beauty and security to your home exterior with planned landscape lighting.
Joe Provey | Bobvila.com | September 15, 2014 | link
By Joe Provey
Landscape lighting can turn a visitor from feeling wary to welcome. It can change the rest of the yard from “Nightmare on Elm Street” to “Some Enchanted Evening,” all with the flip of a switch.
The first step in this transformation is to educate yourself about the possibilities. Because photos rarely do justice illustrating the amazing possibilities of landscape lighting, keep an eye out for good examples when you’re out for an evening stroll or drive.
The strong lights typically used for entrances and to illuminate large areas, such as driveways and decks, are powered by a 120-volt current. A qualified electrician must wire them directly to your circuit box and the cables, held within a protective conduit, must be buried at least 18 inches below ground. If you have these fixtures, make sure they are UL-listed and approved for outdoor use. The 120-v outdoor lights are also preferred for security applications, especially when combined with motion detection.
When less light is sufficient, low-voltage fixtures (12- to 15-v) are the norm. These include accent lights, path lights, and small floodlights. The fixtures are smaller and less obtrusive, use less energy, and are far less worrisome when in wet locations. They can also be plugged into an outdoor receptacle, making them ideal for do-it-yourself installations. The wiring does not require tools, and the cables do not need to be buried.
Solar-powered outdoor lights, a third option, are of course dependent upon exposure to the sun, and are variable with regard to output and when they turn on. They are best used to light paths where they are exposed to full sun throughout the day. Don’t put them in the shade!
Planning for outdoor lighting
Plot out your ideas on graph paper. Draw the footprint of your house to an 1/8-inch scale and sketch in all major landscape elements, including fences, decks, tree, paths, driveways and garden beds. Include the location of any existing or proposed outdoor receptacles as well.
Make notes about what you’d like to illuminate and then decide which fixtures will do the job best. Try to use a variety of lighting techniques. Avoid overly bright and dark areas, and avoid glare for both visitors and your neighbors. Do not place path lights too closely together to avoid the “runway” look. You’ll also have to decide about fixture style, of which there are many!
Types of outdoor lighting fixtures
Entry lanterns or sconces: 120-v fixtures that mount beside doors. They should be either frosted glass or shielded to prevent glare. Their size should be proportional to the height and width of the entry area (often defined by a portico).
Recessed lights: 120-v fixtures typically installed in eaves over decks and garage doors. They provide large pools of light but are mostly hidden. Small, low-voltage recessed lights can be used to light stairs, railings, posts, and built-in deck furniture.
Floodlights: 120-v or low-voltage fixtures used to light wide expanses and large interesting objects, such as driveways, stonework and trees.
Path lights: Usually low-voltage fixtures that illuminate paths by casting small pools of light on the ground. Sometimes, perforations in the light shield allow the lights themselves to be used as guides.
Spot light: Similar to floodlights but with a narrower beam for highlighting a specific object, such as a shrub or statuary.
In-ground light: 120v or low-voltage fixtures that are buried in the ground and covered with a gasketed lens. The beam can be angled slightly to illuminate a wall, tree or fence.