Low-voltage electrical box, as the name implies, is a cabinet for集中线路 with lower voltages, commonly used in modern home renovations, such as for network cables, phone lines, computer monitors, USB cables, TV VGA, color difference, and antennas; all these can be stored inside. If these items are not organized, they become a tangled mess, appearing unharmonious and affecting cleanliness. In summary, the low-voltage electrical box is designed for housing these devices and managing cables.
Brief introduction
In 2002, the government initiated a policy to separate low-voltage and high-voltage electricity, leading to the emergence of low-voltage distribution boxes. These boxes are primarily used for the unified management, distribution, and wiring of low-voltage signals in homes, including networking, telephony, television, and security wiring. Their main purpose is to prevent interference from high-voltage signals, thereby enhancing the quality of life at home. By 2007, their use expanded significantly. The government standardized the use of multimedia information boxes in Shanghai, Suzhou, and Fujian as pilot projects in 2007. Following this, markets across the country began to emulate the adoption of low-voltage distribution boxes, leading to their widespread adoption by real estate developers.
Low-voltage electrical box, also known as smart home wiring box, multimedia box, wiring cabinet, home wiring box, integrated wiring box, corridor box, integrated cabinet, line passing box, multimedia information box, distribution box, home multimedia box, home information access box, multimedia wiring box, multimedia wiring cabinet, home information cabinet, residential information wiring box, home wiring cabinet, smart wiring box, smart cabinet.
Difference in strength
Difference between a power distribution box and a low-voltage distribution box
In residential building construction, intelligent building electrical technology encompasses two main categories: strong electricity and weak electricity. The issue of centralized control and management for strong electricity entering the home's distribution box has been resolved. However, the sources carrying information such as voice, images, and data, with numerous and increasingly complex lines, pose many inconveniences for users in terms of usage, distribution, and maintenance. Therefore, using integrated weak electricity products to standardize weak electricity wiring has become an essential project for future home renovations and the realization of smart buildings. To meet the demand for weak electricity products, new intelligent multimedia home information access boxes, wiring boxes, and weak electricity boxes have been introduced. These can connect transmission equipment for voice, data, images, and security, as well as devices for control and management. They fundamentally alter the issues of unclear images, loud phone signal noise, and slow broadband network speeds caused by DIY wiring in residential homes. They can effectively resolve the access issues for home phones, the internet, cable TV, and more, avoiding various network problems caused by conventional wiring system failures, as well as the repeated investment in re-wiring due to environmental changes. This not only saves material resources but also human resources.
Primary Advantages
Benefits of Low-Voltage Distribution Boxes:
One, unified cabling management for home low-voltage signal lines enhances overall home aesthetics. It also allows for resource sharing: with just one VCR/sound system/satellite receiver, you can watch movies and enjoy background music in every room. Multiple computers can connect to share broadband services; multiple phone lines can be answered and transferred as desired.
Separation of high and low voltage cables; the induced eddy currents from high voltage wires will not affect low voltage signals, making the low voltage section more stable.
Section 3: Meets the engineering design specifications for urban residential building integrated cabling systems and other standards, satisfies the interface requirements of today's information appliances, and can also accommodate future new technologies and products. Truly achieves a "one-step solution."
Four: Safety and clarity, easy to maintain. The new assembly structure or home bus system is secure and reliable. Function modules separate inputs and outputs, making them clear at a glance, and maintenance and upgrades can be done without assistance. All modules are designed for plug-and-play, requiring no professional wiring tools or installation personnel, allowing residents to install them themselves.
Five, Strong Scalability: Structured design with excellent expandability and upgradability, meeting the current and future needs of various users. New outdoor entry lines can be simply connected to the smart multimedia box without the need for pulling new lines or re-trenching and wiring. It offers greater convenience for self-management of low-voltage wiring. For real estate developers, it's a cost-effective way to enhance the selling points of houses, benefiting both residents and property sales.
High performance-to-price ratio; less investment, more trouble saved in the future.
Application Fields
Wiring cabinets are widely used in smart home, intelligent building, building intelligence, intelligent electrical, low-voltage engineering, system integration, smart community, building automation, building intelligence, building electrical, building appliances, cabling, home cabling, network cabling, smart cabling, cabling systems, the world of cabling, home local area network, home network, home decoration, home renovation, home interior decoration, home interior design, home appliance intelligence, and other engineering projects.
Key Points for Home Wiring: Power and Low Voltage Electrical Layout
1. During home renovation, indoor wiring should be installed in conduits using single-core copper wires with good insulation. When installing in conduits, the total cross-sectional area of the wires should not exceed 40% of the conduit's internal diameter, and there should be no joints or twists inside the conduit. Wires should not be installed in the same conduit as telephone lines, cable TV lines, communication lines, etc.
2. Pay attention to the laying of wires during wiring, and follow the construction regulations as specified in the decorative design. Ensure the protection against short-circuit, over-load, and the selection of wire cross-sections. The installation of low-voltage electrical equipment should comply with the current national standards.
3. A residual current circuit breaker should be installed inside the distribution box, with multiple branching lines for controlling lighting, air conditioning, power outlets, etc. The circuits should ensure normal operation of the load.
4. Heaters must not be installed using standard outlets and should not be mounted directly on combustible structures. In the bathroom, it is recommended to use splash-proof outlets.
5. The selection of the cross-sectional area for lighting and electrical heating load wires should ensure that the safe current-carrying capacity of the conductors is greater than the sum of the rated current of all appliances within the branch circuit. The capacity of each branch circuit should not exceed the capacity of the main incoming line. The color of high-voltage wires should be distinguished by different colored wires, with phase wires in red, green, or yellow, neutral wires in blue or black, and ground wires in alternating yellow and green for双色 grounding wires. The grounding protection should be reliable, and the insulation resistance between conductors and between conductors and ground should be greater than 0.5MΩ.
6. The socket should be no less than 300mm from the ground. Leave some slack in the wiring inside the junction box, with a recommended length of 150mm. When wiring, the live wire should enter the switch, the neutral wire should go directly to the light socket, and the live wire of a screw-type light socket should not be connected to the housing. The height of the lighting switch from the ground should be around 1.3 meters, and the switch should not be installed behind the door.
7. Electrical piping within suspended ceilings should comply with the requirements for exposed piping and should not be fixed to the ceiling hangers or joists. The placement of light socket boxes and junction boxes should facilitate maintenance and be covered with a lid. For installations using flexible hoses to connect to light positions, the length should not exceed 1 meter. The ends of the flexible hoses should be connected to junction boxes with connectors, ensuring a secure connection to the lighting fixtures. The metal flexible hoses should be grounded for safety. All types of high and low voltage conductors must not be exposed within the suspended ceiling.
8. For power outlets, the phase and neutral lines are positioned right phase and left neutral. Outlets with a grounding hole should have the grounding pin on the top position, ensuring reliable grounding. The switch and outlet should be securely installed. Inspect using visual and manual methods, and use circuit testing tools to verify that the phase, neutral, and grounding lines on the outlet meet the requirements.
9. The spacing between conductors and gas pipelines should be ≥100MM on the same plane, and ≥50MM on different planes. The distance between electrical switch connectors and gas pipelines should be ≥250MM on the same plane, and ≥150MM on different planes.
10. Telephone lines, TV signals, and audio connection wires are separately laid out with dedicated branching. Signal transmission lines are used, and a certain distance is maintained between them to prevent interference among different signals. The shielding mesh of the TV signal transmission lines is trimmed evenly to avoid a short circuit with the center wire, otherwise, it may cause unclear images. TV and telephone connections use "connectors." Use a multimeter to check for open circuits and intermittent connections, and use an ohmmeter to check grounding. Seal after inspection and confirmation of compliance.
