These are all different types of electrical boxes (except the lunch box, needless to say). The location and type of wiring you are doing will determine which kind of box to make use of. The lunch box will likely be used following the job is done. Before we get into specific varieties of boxes, let’s go over some things that are applicable to all types of electrical boxes.
*All electrical connections should be contained inside Plastic Waterproof Box. The box shields the property material and other flammable materials in case of electrical sparks.
*All boxes must be accessible. Never cover a box with drywall, paneling or any other wall coverings.
*If the electrical junction box holds only spliced wires with no device, like a switch, it should be engrossed in a blank cover plate.
*An electrical box should be installed with the front edge flush with all the finished surface of the wall or ceiling. When the space involving the finished surface and the fringe of the box is greater than 1/8″, then the box extender should be installed.
*Make certain your box is deep enough in order to avoid crowding the wires. It ought to be deep enough so a switch or receptacle can be installed easily without crimping or damaging the wires. Electrical codes figure out how many wires of what size each scale of box can accommodate based on the cubic-inch capacity of the box. For instance, a #14 wire occupies 2 cubic inches and a #12 wire occupies 2.25 cubic inches. When counting wires, count the fixture or device as you wire. It’s always safe for use a big box unless you don’t have room inside the wall or ceiling.
Electrical boxes can be found in different materials and different shapes. By familiarizing yourself with the different types of boxes, you’ll have the ability to select the correct box for your house wiring project.
Indoor boxes are generally either plastic or metal.
*Plastic electrical boxes are definitely the most generally used boxes for indoor residential wiring. They’re inexpensive as well as simple to set up. However, as you cannot ground a plastic box, so some local codes do not let them or they may be only allowed for certain uses. Check together with your local building department before using Safety Protecting Case.
*Some plastic boxes have holes w/knockout tabs. These boxes do not possess built-in clamps so the cable is not really locked in place from the box. You have to use cable clamps and staple the cable within 8 inches of the box if you use this sort of box.
*Plastic boxes are simpler to damage than metal boxes, so buy extra boxes just in case. Never install a cracked box.
*Most are brittle; don’t use them where they are certainly not that are part of the wall. The exception is definitely an outdoor box made of extra strong PVC.
*Don’t use with heavy light fixtures and fans. Some plastic boxes include nails for anchoring the box to the framing material.
*Metal electrical boxes are stronger and offer better ground connection than plastic boxes.
*Metal boxes should be grounded for the circuit grounding system. Connect the circuit grounding wires to the box with a pigtailed green wire and wire nut, or having a grounding clip.
*The cable entering a metal box should be clamped.
*”Gangable” boxes can be dismantled and ganged together to make space for several devices.
*These are sometimes called old-work or cut-in boxes.
*Remodel electrical boxes are employed when running cable to put in new devices into an older wall.
*Plastic remodel boxes have “wings” and metal remodel boxes have expandable clips or bendable ears that hold them in the wall.
Outdoor boxes are often molded plastic or cast aluminum.
*These boxes are utilized with PVC conduit in outdoor wiring and exposed indoor wiring.
*They are necessary for outdoor fixtures linked to metal conduit.
*They have got sealed seams and threaded openings to help keep moisture out.
Rectangular (2″X3″) Trade Name “One-Gang”:
*These boxes can be used as switches and receptacles.
*One-gang boxes may have detachable sides that let them be ganged together to create two-gang boxes.
Square (4″X4″) Trade Name “Four-Square”:
*”Plaster Rings” are employed as adapters to allow for these configurations: One-Gang, Two-Gang, Three-Inch or Four-Inch Round.
*Whenever a square box can be used simply for splicing cables, it is called an electrical junction box and a blank cover plate must be used.
Octagonal Trade Name “Three-“:
*These contain wire connections for ceiling fixtures.
*Some octagonal electrical boxes have extendable braces which will fit any joist spacing and therefore are nailed or screwed for the framing material.
While deciding on the Aluminium Box for your project will help to make sure the successful completing your wiring project, always respect electricity and follow safety precautions. Never work on live circuits. Before tipyyy begins, the circuit needs to be identified and switched off at the panel, tagging it to let others know that work will be done on that circuit. Confirm that the power is with a voltage tester. Electrical work should only be done by a confident, experienced person or by a licensed electrical contractor.