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Terminal Box Vs. Junction Box



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Many times people confuse terminal and junction boxes due to their similarities in their appearances and functionalities. However, there is a fine line between a terminal box and a junction box. We are going to look at the differences of each, compare their functionalities and the materials used to make them, and finally, look at how they hold up against each other head to head. If you have always had trouble telling these two apart, then stick around to the end.

What is a Terminal Box?

An Open Terminal Box
Source: Pinterest

An electrical terminal box is an electrical structure that is used to house specific connections but lacks any room for future expansion or any addition of more connections later on. This is how the box acquired its name as Terminal box. Another unique tarot of a terminal box is the size. It is much bigger than a junction box, and this makes it ideal for holding bigger and more complicated connections. This is why you are likely to find a terminal box in huge industrial complexes that require safe connections to high voltage for their operations to run smoothly.

Advantages of Terminal Boxes

There are several benefits that come with using terminal boxes over any other type, and the following are the main advantages that push people into selecting them in the first place.

Disadvantages of Terminal Boxes

Solid as they may be, terminal boxes do have their own limitations that can make them a headache to have around. They include the following.

What is a Junction Box?

Junction Box
Source: Pinterest

A junction box is an electrical appliance that is used to distribute power to normal electrical wiring. They are the juncture through which electricity is pulled from the main power lines to the house or the building in question in a way that doesn’t expose the wires to any extreme elements that may cause danger to the people. When compared to a terminal box, a junction box is much smaller and can be used both for domestic and commercial purposes. They are also expandable and can always have room for more connections later on when the need arises.

Advantages of Junction Boxes

Junction boxes are the most commonly used types of electrical connections, and they come in varying sizes and shapes. The following are some of the advantages that make them a very attractive option for any type of electrical wiring.

Disadvantages of Junction Boxes

Despite the reliability and brilliance, junction boxes also come with their own limitations that can cause a lot of inconveniences if action is not exercised. The following are some of the disadvantages you have to be on the lookout for.


Choosing to go with terminal boxes or junction boxes comes down to your immediate needs and the nature of the establishment you plan to do the wiring in. The bottom line here is that they both work perfectly well for what they are designed for. For more information on electrical boxes and how they function, check out our website.

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