These are all several types of electrical boxes (except the lunch box, of course). The location and type of wiring you’re doing determines which type of box to make use of. The lunch box will likely be used following the job is performed. Before we get into specific types of boxes, let’s go over some things that are applicable to all kinds of electrical boxes.
*All electrical connections should be contained inside Safety Protecting Case. The box shields your building material and other flammable materials in case of electrical sparks.
*All boxes has to be accessible. Never cover a box with drywall, paneling or some other wall coverings.
*If the electrical junction box holds only spliced wires without any device, such as a switch, it needs to be engrossed in a blank cover plate.
*An electrical box should be installed using the front edge flush with the finished top of the wall or ceiling. In the event the space between the finished surface and the fringe of the box is more than 1/8″, then the box extender should be installed.
*Make sure your box is deep enough to prevent crowding the wires. It should be deep enough so a switch or receptacle can be installed easily without crimping or damaging the wires. Electrical codes see how many wires of what 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 as well as 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 sizable box unless you don’t have room in the wall or ceiling.
Electrical boxes are available in different materials and various shapes. By familiarizing yourself with the various kinds of boxes, you’ll have the ability to pick the correct box for your residence wiring project.
Indoor boxes are often either plastic or metal.
*Plastic electrical boxes are definitely the most widely used boxes for indoor residential wiring. They’re inexpensive as well as simple to install. However, because you cannot ground a plastic box, so some local codes do not let them or they may be only allowed for certain uses. Check along with your local building department before using Mould Box.
*Some plastic boxes have holes w/knockout tabs. These boxes do not possess built in clamps therefore the cable will not be located in place from the box. You need to use cable clamps and staple the cable within 8 inches of the box if you utilize this type 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 utilize them where they are not included in the wall. The exception is definitely an outdoor box made from 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 must be grounded for the circuit grounding system. Connect the circuit grounding wires for the box with a pigtailed green wire and wire nut, or with a grounding clip.
*The cable entering metallic box must be clamped.
*”Gangable” boxes can be dismantled and ganged together to create space for 2 or more devices.
*They are sometimes called old-work or cut-in boxes.
*Remodel electrical boxes are utilized when running cable to install 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.
*These are necessary for outdoor fixtures connected with metal conduit.
*They have sealed seams and threaded openings to maintain 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 make two-gang boxes.
Square (4″X4″) Trade Name “Four-Square”:
*”Plaster Rings” are utilized as adapters to support these configurations: One-Gang, Two-Gang, Three-Inch or Four-Inch Round.
*Each time a square box can be used just for splicing cables, it is actually called an electrical junction box and 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 which will fit any joist spacing and are nailed or screwed for the framing material.
While selecting the Plastic Waterproof Box for your project will assist you to guarantee the successful finishing 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 switched off at the panel, tagging it to let others know that work will be done on that circuit. Confirm that this power is with a voltage tester. Electrical work should only be performed by a good, experienced person or by a licensed electrical contractor.