Calculation Method For Brass Terminal Blocks

The calculation method for brass terminal blocks is mainly based on factors such as wire specifications, quantity, and usage environment. Here are some detailed calculation methods:

1、 Basic classification and judgment

Terminal connection and no terminal connection:

Generally speaking, wires with an area of 10 square millimeters or less are treated as terminal free wiring (unless there are special requirements to use wire terminals).

Wires larger than 10 square millimeters are treated as having terminal connections, usually requiring the use of welded or crimped copper wire terminals.

The relationship between cables and terminals:

When the cable diameter is greater than or equal to 16 square millimeters, it is usually calculated based on the cable terminal head and includes the cost of crimping the terminal.

When the cable diameter is less than 16 square millimeters, it shall be calculated separately according to the brass terminal block block.

2、 Specific calculation method

Calculated by the number of wires: In low-voltage switchgear and other engineering projects, the number of copper wire terminals is usually calculated based on the number of wires. There are a few wires, so a few terminal blocks are needed.

Calculation of incoming and outgoing lines of distribution boxes: All incoming and outgoing lines of distribution boxes, cabinets, panels, junction boxes, and terminal boxes should be calculated truthfully according to the specifications and number of wire heads of the wires, and should be divided into relevant quota sub items such as no terminals, terminals, or pressed (welded) brass terminal block blocks.

3、 Precautions

Consider the usage environment: When used in humid, corrosive, or high-temperature environments, the specifications of brass terminal blocks need to be correspondingly increased to ensure their normal use and connection stability.

Mechanical strength requirements: Select appropriate brass terminal block specifications based on the usage environment and the characteristics of the connected equipment to meet the mechanical strength requirements.

In summary, the calculation method for brass terminal blocks involves multiple aspects and needs to be comprehensively considered based on the actual situation. In practical applications, it is recommended to consult a professional electrical engineer or consult relevant electrical specifications for more accurate calculation methods.