These are all different types of electrical boxes (except the lunch box, obviously). The location and kind of wiring you are doing determines what sort of box to make use of. The lunch box is going to be used following the job is done. Before we get into specific kinds of boxes, let’s review some things that are applicable to all types of electrical boxes.
*All electrical connections must be contained inside Mould Box. The box shields your building material and other flammable materials in the case of electrical sparks.
*All boxes must be accessible. Never cover a box with drywall, paneling or some other wall coverings.
*If an 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 needs to be installed with all the front edge flush using the finished surface of the wall or ceiling. If the space in between the finished surface as well as the edge of the box is greater than 1/8″, then the box extender should be installed.
*Make sure your box is deep enough to prevent 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 the things size each size of box can accommodate based on the cubic-inch capacity in the box. For instance, a #14 wire occupies 2 cubic inches along with a #12 wire occupies 2.25 cubic inches. When counting wires, count the fixture or device as one wire. It’s always safe to use a big box unless you don’t have room within the wall or ceiling.
Electrical boxes are available in different materials and various shapes. By familiarizing yourself with all the different types of boxes, you’ll have the ability to choose the correct box for your residence wiring project.
Indoor boxes are usually either plastic or metal.
*Plastic electrical boxes are the most widely used boxes for indoor residential wiring. They’re inexpensive and simple to put in. However, as you cannot ground a plastic box, so some local codes do not let them or these are only allowed for certain uses. Check 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 and so the cable is not really located in place from the box. You must use cable clamps and staple the cable within 8 inches from the box if you use this kind of box.
*Plastic boxes are simpler to damage than metal boxes, so buy extra boxes just in case. Never put in a cracked box.
*Nearly all are brittle; don’t utilize them where they are not included in the wall. The exception is an outdoor box manufactured from extra strong PVC.
*Don’t use with heavy light fixtures and fans. Some plastic boxes include nails for anchoring the box towards the framing material.
*Metal electrical boxes are stronger and supply better ground connection than plastic boxes.
*Metal boxes should be grounded towards the circuit grounding system. Connect the circuit grounding wires for the box using a pigtailed green wire and wire nut, or using a grounding clip.
*The cable entering a metal box should be clamped.
*”Gangable” boxes can be dismantled and ganged together to help make space for several devices.
*They are sometimes called old-work or cut-in boxes.
*Remodel electrical boxes are used when running cable to put in new devices into an old wall.
*Plastic remodel boxes have “wings” and metal remodel boxes have expandable clips or bendable ears that hold them inside the wall.
Outdoor boxes are often molded plastic or cast aluminum.
*These boxes are employed with PVC conduit in outdoor wiring and exposed indoor wiring.
*They are needed for outdoor fixtures connected with metal conduit.
*They may have sealed seams and threaded openings to 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 allow them to be ganged together to form two-gang boxes.
Square (4″X4″) Trade Name “Four-Square”:
*”Plaster Rings” are utilized as adapters to accommodate these configurations: One-Gang, Two-Gang, Three-Inch or Four-Inch Round.
*Each time a square box is used only for splicing cables, it is called an electrical junction box along with a blank cover plate should be used.
Octagonal Trade Name “Three-“:
*These contain wire connections for ceiling fixtures.
*Some octagonal electrical boxes have extendable braces that will fit any joist spacing and are nailed or screwed for the framing material.
While selecting the Plastic Waterproof Box to your project will help you to ensure the successful completion of 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 turned off in the panel, tagging it to let others know that work has been done on that circuit. Confirm that this power is off with a voltage tester. Electrical work should only be done by a confident, experienced person or with a licensed electrical contractor.