Terminal box is used for specific connections, no space for future expansion or does not require expansion of connections in future. On the other hand, junction box is with minimum specific size, plenty of woking space. Future expansion can also be planned for new connections..
Furthermore, what is the difference between pull box and junction box?
Pull box : In electric wiring, a box (with a removable cover) that is inserted in one or more runs of raceway to facilitate the pulling of conductors through the raceway. junction box: An electrical junction box is an enclosure housing electrical connections, to protect the connections and provide a safety barrier.
Beside above, what is motor terminal box? terminal box. On a piece of electric equipment (such as a motor), a box within which the leads from the piece of equipment are connected to the leads supplying the equipment with power; usually provided with a removable cover plate for access.
Similarly, it is asked, what is the point of a junction box?
A junction box performs several essential functions: Encloses the wiring connections and protects them from physical damage. Provides a means for mounting the electrical device and securing the electrical cable(s) serving the device. Prevents accidental contact with live wires and terminals.
Do junction boxes need?
You'll need a junction box if you can't make the connections inside an existing electrical box. You should install the box with the opening facing out from the wall so all the wires inside are accessible. Like any electrical box, it should be installed so that the edge of the opening is flush with the wall.
Related Question Answers
How many conduits are in a box?
For example, a pull box contains two conduits located on opposite walls. While one conduit has a trade size of 2 inches, the other has a trade size of 3 inches.How many wires can be in a junction box?
6 wires
Why do we use junction box?
A junction box is an enclosure that protects a connection (the junction) of two or more wires carrying electrical current. When a junction box is used for every electrical connection in a building it is much easier to locate and repair any electrical problems that come up.How do you size a junction box?
In such situations, junction box sizing requirements are a bit more complicated. Start with the largest raceway size like you did in the straight pull, but also do the following: Multiply the raceway size by six, rather than eight. Add together the sizes of any other raceways on the same wall and row.How do you calculate electrical box fill?
Step 1: Determine the number of each size conductor. All equipment-grounding conductors count as one conductor, based on the largest equipment-grounding conductor entering the box [314.16(B)(5)]. Step 2: Determine the volume of the conductors [Table 314.16(B)]. Step 3: Select the outlet box from Table 314.16(A).How do I choose a junction box?
Junction boxes are used to enclose wire splices. Wherever two wires join, you should install a junction box. Use 4-inch standard square boxes because you'll need the additional room for splicing wires and covering them with caps. The more splices you have in the same area, the bigger the junction box needs to be.Are junction boxes Code?
Why You Need a Junction Box The National Electrical Code (NEC) dictates that no wiring splices are allowed outside of an approved enclosure. One type of approved enclosure is a junction box. Junction box covers must remain accessible; they cannot be covered with drywall or other surface material.What is an electrical gutter box?
A sheet metal enclosure used to supplement wiring spaces at meter centers, distribution centers, switchboards, and similar points of wiring systems. The enclosure has hinged or removable covers for housing and protecting electrical wires, cable, and busbars.Can you use a junction box to extend wiring?
If you do need to extend the wires, yes, a junction box would be needed. It must remain accessible. You've pretty well identified your two choices; if you don't want to re-run longer cables, you'll need to splice in some additional cable.Are junction boxes bad?
Overfilling a Junction Box Cramming too many wires into a junction box is not only dangerous, but it's against the National Electrical Code. Plastic junction boxes are stamped with their approved volume; you may have to calculate the volume of a steel box on your own.Can a handy box be used as a junction box?
Handy Box: Mounts on the surface of a wall. Can contain light switches or receptacle Ideal for areas where behind-the-wall installation is difficult or not possible. Junction Box: Wires connect only to each other, never to a switch, receptacle or fixture.Does a light fixture need a junction box?
You can't install a light fixture without a junction box, but the fact that there's no box at the spot where you want to install the light doesn't mean you can't install the light. 
