{"id":52121,"date":"2021-12-29T01:12:52","date_gmt":"2021-12-28T23:12:52","guid":{"rendered":"https:\/\/www.gahzly.com\/2022-choosing-the-appropriate-cutter-and-cable-capacity\/"},"modified":"2022-05-30T16:25:34","modified_gmt":"2022-05-30T14:25:34","slug":"2022-choosing-the-appropriate-cutter-and-cable-capacity","status":"publish","type":"post","link":"https:\/\/gahzly.com\/en\/\u0645\u0642\u0627\u0644\/2022-choosing-the-appropriate-cutter-and-cable-capacity\/","title":{"rendered":"2022 Choosing the appropriate cutter and cable capacity"},"content":{"rendered":"

Choosing the right cutter and cable capacity<\/b><\/h1>\n

Choosing the right cutter and cable capacity<\/span><\/p>\n

Choosing the right cutter and cable capacity,<\/span><\/p>\n

Choosing the appropriate cutter and cable capacity is one of the most important foundations of electrical wiring that you must know for its direct relationship to protecting loads and household electrical appliances.<\/span><\/p>\n

Where circuit breakers and electrical cables are available in the market in various capacities and diameters to suit each specific electrical load.<\/span><\/p>\n

Follow this article with us to learn how to choose the right cutter capacity and cable<\/span><\/p>\n

Choosing the right cutter and cable capacity<\/p>\n

\"\u0627\u062e\u062a\u064a\u0627\u0631<\/p>\n

Choosing the right cutter and cable capacity<\/h2>\n

The importance of installing a circuit breaker<\/b><\/h2>\n

The circuit breakers shall be installed in the sub panels with the aim of:<\/span><\/p>\n

    \n
  1. Protection of electrical loads from short circuit current resulting from the contact of electrical conductors together. or breakdown of cable insulation…etc.<\/span><\/li>\n
  2. Disconnecting the load from the circuit in case the load exceeds the rated current of the circuit breaker.<\/span><\/li>\n<\/ol>\n

    \"\"<\/b><\/h2>\n

    Choosing the right cutter and cable capacity<\/h2>\n

    electrical cable<\/b><\/h2>\n

    In order for the load or device to be fed with electric current, We need a transmission to pass the current from the electrical socket to this load to power it,<\/span><\/p>\n

    This method is called an electric cable or wire. Where the cable is manufactured with diameters of international standard specifications to carry the electric current passing through it.<\/span><\/p>\n

    Choosing the right cutter and cable capacity<\/p>\n

    Conditions for choosing the right electrical circuit breaker<\/b><\/h2>\n
      \n
    1. The circuit breaker capacitance should be 25% higher than the load current.<\/span><\/li>\n
    2. Match the breaker voltage to the branch circuit voltage.<\/span><\/li>\n
    3. number of electrodes.<\/span><\/li>\n
    4. To comply with the International Standards (IEC).<\/span><\/li>\n
    5. Chapter response speed.<\/span><\/li>\n
    6. Maximum short circuit current it can withstand.<\/span><\/li>\n<\/ol>\n

      Steps to choose the appropriate cutter and cable capacity<\/b><\/h2>\n
        \n
      • Determine the load current.<\/span><\/li>\n
      • Choosing the right circuit breaker capacity.<\/span><\/li>\n
      • Choose the appropriate cable diameter.<\/span><\/li>\n<\/ul>\n

        Choosing the right cutter and cable capacity<\/p>\n

        Determine the load current<\/b><\/h2>\n

        The first step in the process of selecting the appropriate breaker capacity and cable diameter is to know the electrical load capacity in volt-amperes,<\/span><\/p>\n

        If there is more than one electrical load, The electrical loads must be sorted, For example, Suppose we have a luminous load, carry an air conditioner,<\/span><\/p>\n

        Here, the two loads must be separated so that a suitable circuit breaker is installed. And another cutter suitable for the electric conditioner.<\/span><\/p>\n

        The load current is calculated using the following relationship:<\/span><\/p>\n

        load current = load capacity (in volts-amperes or watts) x source voltage (in volts)<\/span><\/p>\n

        Electrical devices<\/span><\/p>\n

        Choosing the right circuit breaker capacity<\/b><\/h2>\n

        After determining the electrical loads, Knowing the total capacity of the loads that consume electrical energy, The cutter is fitted to a specific load,<\/span><\/p>\n

        Or a group of circuit breakers distributed over several electrical load circuits.<\/span><\/p>\n

        It is always known that the circuit breaker current is 25% higher than the ohmic load current, <\/span><\/p>\n

        If the load is inductive with medium and high capacities (such as electric motors), In this case the circuit breaker current must be higher than the starting current of the electric motor.<\/span><\/p>\n

        The circuit breaker current is calculated using the following relationship:<\/span><\/p>\n

        circuit breaker = load current x 1.25<\/span><\/p>\n

        Then the nearest current capacity (amperes) to the circuit is chosen<\/span><\/p>\n

        circuit breakers<\/span><\/p>\n

        Electric cable selection<\/b><\/h2>\n

        is the last step, The cable bearing capacity is estimated based on several electrical factors:<\/span><\/p>\n

          \n
        1. electric load current.<\/span><\/li>\n
        2. Rated current of circuit breaker: The circuit breaker protects the cable from high currents and short circuits.<\/span><\/li>\n
        3. Palace current for the cable.<\/span><\/li>\n
        4. The rated voltage of the cable.<\/span><\/li>\n
        5. influence of weather factors.<\/span><\/li>\n<\/ol>\n

          Table for determining the maximum current of the electric cable:<\/span><\/p>\n\n\n\n\n\n\n\n\n\n
          Wire diameter in (mm)<\/span><\/td>\nPermissible withstand current in amperes (A)<\/span><\/td>\n<\/tr>\n
          2.5<\/span><\/td>\n16A<\/span><\/td>\n<\/tr>\n
          4<\/span><\/td>\n22A<\/span><\/td>\n<\/tr>\n
          6<\/span><\/td>\n28A<\/span><\/td>\n<\/tr>\n
          10<\/span><\/td>\n39A<\/span><\/td>\n<\/tr>\n
          16<\/span><\/td>\n50A<\/span><\/td>\n<\/tr>\n
          25<\/span><\/td>\n66A<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Important note:<\/span><\/p>\n

          The following table shows the load current in approximate values.<\/span><\/p>\n

          But if you want to know the maximum current of a cable or electrical conductor, You should review the cable data from the catalog or the data sheet of the producing company<\/span><\/p>\n

          The appropriate cable diameter is calculated using the following relationship:<\/span><\/p>\n

          Suitable cable diameter = breaker current x 1.2<\/span><\/p>\n

          Choosing the right cutter and cable capacity<\/p>\n

          \"\"Example of choosing the appropriate cutter and cable capacity<\/b><\/h2>\n

          If the single-sided power supply is 230V, 2500VA electric heater.<\/span><\/p>\n

          Required:<\/span><\/p>\n

            \n
          • load current calculation<\/span><\/li>\n
          • Choose the right cutter capacity.<\/span><\/li>\n
          • Choose the appropriate cable diameter. <\/span><\/li>\n<\/ul>\n

            We need a 16A breaker and a 2.5mm diameter cable<\/span><\/p>\n

            \"\"<\/b><\/h1>\n

            Choosing the right cutter and cable capacity<\/p>\n

            Electrical cables and their types<\/b><\/h1>\n

            electrical cables and their types,<\/span><\/p>\n

            The methods of extending electrical cables and their types are among the most important foundations that you must know for their direct relationship to the field of electricity in the extension of homes, transmission lines and power.<\/span><\/p>\n

            Where the method and types of electrical cables are intertwined in home, commercial and industrial installations and external transmission networks,<\/span><\/p>\n

            Electrical cables are available in different types and diameters. And when choosing the electrical cable, it must be taken into account that it is suitable with the type of extension (external \/ internal),<\/span><\/p>\n

            electrical load capacity (domestic\/commercial\/industrial);<\/span><\/p>\n

            Based on this, the most suitable cable for connection is selected.<\/span><\/p>\n

            Follow this article with us to learn how to extend electrical cables and their types.<\/span><\/p>\n

            Read also:<\/span> Types of circuit breakers<\/span><\/p>\n

            Definition of Electrical Cables (Electrical Conductors)<\/b><\/h2>\n

            It is a tool for transmitting electric energy that is produced from renewable and non-renewable electric power plants to consumption areas. such as residential communities, factories, public and private institutions, and hospitals.<\/span><\/p>\n

            Where the conductor of electrical cables are made of copper or aluminum, It is covered with an insulating material to isolate the conductor from its surroundings.<\/span><\/p>\n

            electrical cables<\/span><\/p>\n

            Factors affecting the selection of electrical cables<\/b><\/h2>\n

            There are several ways to extend electrical cables and their types in proportion to the place, which are as follows:<\/span><\/p>\n

              \n
            • Extension inside the wall.<\/span><\/li>\n
            • Extension inside the external pipes.<\/span><\/li>\n
            • Underground extension.<\/span><\/li>\n
            • Extension on private channels.<\/span><\/li>\n
            • Insulation of cables and connectors.<\/span><\/li>\n
            • Extension of factories with Cable Trays.<\/span><\/li>\n
            • The maximum operating voltage of the cable.<\/span><\/li>\n
            • The maximum value of the short-circuit current and its duration, Meaning that the electric cable bears the short-circuit current.<\/span><\/li>\n
            • cable length.<\/span><\/li>\n
            • Maximum temperature tolerance: Voltage drop.<\/span><\/li>\n<\/ul>\n

              electrical cable laying<\/b><\/h2>\n

              Which method is chosen for laying conductors and cables depends on several different factors,<\/span><\/p>\n

              The most important of which is the nature of the project,<\/span><\/p>\n

              For example, in an industrial project, it is preferable to use Cable Trays. until the electrical conductors and cables are laid on these exposed mounts,<\/span><\/p>\n

              Thus, the surrounding air leaks heat from electrical conductors and cables.<\/span><\/p>\n

              There are several types of electrical cable laying methods:<\/span><\/p>\n