Industrial cable entries
Introduction
A raceway or electrical conduit is a piping system used for the protection and routing of electrical wiring. Electrical conduit can be made of metal, plastic, fiber, or clay. Flexible ducts are available for special purposes.
A cable tray is an open design of a cable channel.
Conduit is generally installed by electricians at the installation site of the electrical equipment. Their use, form, and installation details are often specified by wiring regulations, such as the United States National Electrical Code (NEC) or other national or local codes. The term "agent" is commonly used by electricians to describe any system containing electrical conductors, but the term has a more restrictive technical definition when used in official wiring regulations.
Section of an electrical cable
The section of an electrical cable is the area or surface of the conductor (metallic part) that is exposed with a cut perpendicular to its length. It is calculated with the following formula Area= π x r2, where π is the number pi (3.14).
Based on the section, the cable can withstand a certain intensity, which corresponds to a certain maximum power.
For example, for electric vehicle chargers, in private parking garage spaces, 25 mm² cables are used.
hard tube
Rigid pipes are used to protect cables, including electrical cables, fiber optics, telephone lines, etc. They are generally divided into metal ducts and non-metallic ducts.
Metal:.
Rigid metallic conduit (RMC) is a thick-walled threaded tube, usually made of coated steel, stainless steel, or aluminum.
Galvanized rigid conduit (GRC) is a galvanized steel pipe, with a wall thick enough to allow it to be threaded. Its common applications are in commercial and industrial construction. It is designed to protect cables and connectors.
Intermediate metal conduit (IMC) is a steel tube heavier than EMT, but lighter than RMC. Can be threaded.
Aluminum conduit, similar to galvanized steel conduit, is a rigid tube, generally used in commercial and industrial applications where greater corrosion resistance is required. Such locations include food processing plants, where large amounts of water and cleaning chemicals would make galvanized conduit unsuitable. Aluminum cannot be embedded directly into concrete, as it reacts with the alkalis in the cement. The conduit can be coated to prevent corrosion from accidental contact with concrete. Aluminum conduit is typically cheaper than steel conduit, as well as having a lower labor cost to install, as a length of aluminum conduit weighs approximately one-third the weight of rigid steel conduit of the same size.