How To Install A Light Post In Your Yard
Outdoor lighting offers us a lot. Information technology can stretch a day for work or fun, and make the place safer by helping us see where we walk in the nighttime. A well-lighted k besides deters crime. The range of outdoor lighting options runs from motion-sensing floodlights, to sodium-vapor yardlights, to low-voltage landscape lights and traditional lamp posts. Each meets a need, just information technology's the apprehensive post light we'll focus on here.
We wanted a simple lite to illuminate the backyard and to serve as a focal point that divides the empty yard space between two houses. For this project, we chose a black-enameled aluminum iii-caput post calorie-free, Model 42278, made by Globe Electrical Co. Inc., 150 Oneida Dr., Montreal, Quebec, Canada H9R 1A8. The light costs well-nigh $150 at a local home center. Conduit, fittings, switch, cablevision, hardware and concrete cost another $70. As with any electric fixture installation, bank check with your local building department to see if any permits are required.
Getting Power To The Low-cal
The power for our light came from a GFCI-protected receptacle mounted in the siding above a deck, most 20 ft. from the low-cal. We ran plastic conduit underground from the light to the deck. There, the conduit came out of the basis, and ran under the deck to the firm. Above the deck we used metal conduit.
The PVC conduit that we used is RNC (Rigid Nonmetallic Conduit). This blazon of conduit tin can be cached. Information technology's not to exist confused with ENT (Electric Nonmetallic Tubing), which is not rated for burying. The conduit to a higher place the deck is EMT (Electrical Metal Tubing) with rain-tight fittings.
Step 1: Going Hush-hush
The starting time footstep is to utilise a posthole digger to rough out a hole that is well-nigh 18 in. deep. And then, crosscut a concrete form so information technology is virtually ii in. longer than the hole'due south depth.
Next, drill a hole near the bottom of the form, and fit the form with 1/2-in.-dia. PVC conduit and a 90 degree elbow. Glue the pieces together with PVC cement. Eye the conduit riser in the form, and tape the elbow to the grade. Protect both ends of the conduit past covering them with tape.
Footstep 2: Going Underground
Place the form in the hole and level information technology. Backfill around the grade with soil, or use scrap woods braces to hold it in place.
Footstep 3: Going Underground
Carefully shovel concrete into the class. Brand sure that the PVC conduit riser remains centered in the form.
Step 4: Going Underground
After checking the foundation for level one last time, shine the surface of the concrete with a hand float.
Footstep 5: Going Cloak-and-dagger
Thread anchor bolts through the hold-downwards subclass, leaving 1 in. of threads at the summit. Press the bolts into the concrete.
Step 6: Running the Conduit
Dig an 18-in.-deep trench from the light postal service to the power source. In our case, it was the deck. Remove the physical form, and and so peel the tape from the conduit stub.
Glue the first length of conduit to the stub with a coupling. If yous need to brand a plough, glue a 45 caste or 90 degree elbow in identify.
Step vii: Running the Conduit
In instance you are installing the conduit equally nosotros did, under a deck, you'll need to install a sideslip coupling and an LB conduit body when y'all become to the deck. The LB conduit body is the PVC fitting that - with the slip coupling - joins the vertical conduit to the horizontal conduit that comes through the deck. The slip coupling allows the conduit to move in response to settling soil.
Begin by gluing the slip coupling to the lower end of the 1/2-in. LB conduit body. Then, drill a 1-in.-dia. hole through the band joist of the deck. Glue a length of i/2-in. conduit to the LB plumbing fixtures. Next, drive a screw through the LB conduit body'south mounting tab and into the deck framing. Run the conduit under the deck, supported every four ft. with hangers. If y'all lack adequate headroom under the deck, y'all will have to remove deck boards to install conduit.
Footstep 8: Electrical Work
To tap the GFCI-protected receptacle, first shut off the power to the receptacle, and remove its weather-proof encompass. Next, install a metal extension box over the receptacle.
Step 9: Electrical Work
And then, run 1/2-in. EMT conduit between the box extension and a tee conduit torso. Extend a length of conduit downwardly from the tee conduit torso through the deck. Join the EMT and the PVC conduit under the deck with a male person adapter and a threaded coupling. Bring a second length of conduit up from the tee conduit body for a switch box, and install the switch box. Tighten the fittings.
Footstep x: Electrical Work
Nosotros installed divide insulated 14-ga. wires, avoiding cablevision, which is too hard to pull through 1/two-in. conduit. We used a white, a black and a greenish footing wire. Pull these wires from the receptacle and switch box to the calorie-free. Exit at to the lowest degree eight ft. of excess wire above the concrete base of operations.
Footstep 11: Electrical Work
Install the light heads on the post, and feed wires into the post from the bottom, until they protrude through the height. So, connect the wire leads from the lite heads to the circuit wires. Join like-colored wires with twist connectors. For strain relief, tape the wires together with vinyl tape. This keeps the weight of the dangling circuit wires from straining the connections.
Footstep 12: Electrical Work
Tip the mail up, and settle the base of operations over its hold-down bolts. Tighten the nuts firmly, but not excessively, with a wrench.
Pace 13: Electrical Work
At present all that's left is the electrical connections at the house. The blackness wire from the light runs to the switch box. A second blackness wire runs from the switch box and is connected by a pigtail to the black wire that comes from the house, and to the receptacle's brass screw.
Bring the white and green circuit wires from the low-cal directly into the receptacle box, pigtail them to the white and green wires from the cable that comes from the house, and attach them to the outlet receptacle. The white wire attaches to the receptacle'southward silver screw, and the green wire to the green screw. The pigtailed black wire is connected to the contumely screw.
Step 14: Electrical Piece of work
Note: To ensure that the electrical assembly is safely grounded, the switch must accept its own ground wire, and the metal conduit and fittings must be grounded. A green wire from the switch box is connected by a pigtail to the cable that comes from the business firm and the green wire from the lite. At the switch, it is pigtailed with two wires. Ane length from the pigtail attaches to the switch'due south dark-green ground screw, the 2d is bonded to the switch box. Finally, connect the 2 black wires to the switch equally shown.
Stride 15: Electric Work
Install the weatherproof comprehend plate over the switch box. The external lever will command the toggle below it.
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Source: https://www.popularmechanics.com/home/how-to/a160/1275836/
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