Poe power supply cable connection

**Which wires are used for POE power supply?** POE, or Power over Ethernet, is a technology that allows existing Ethernet CAT5 cabling to provide both data transmission and electrical power to IP-based devices without requiring any modifications to the infrastructure. This makes it a convenient and cost-effective solution for powering network-enabled devices such as IP phones, wireless access points, and security cameras. POE works by delivering power through the same Ethernet cable that carries data. The power is typically provided at 48V DC, and the effective power delivery range is up to 100 meters, depending on the cable quality and standard used. A standard Ethernet cable contains eight copper wires, and there are two main methods for delivering power through these wires: Mode A and Mode B.  In **Mode A**, power is delivered using the unused pairs in the cable—specifically, pins 4, 5 (blue pair) and 7, 8 (brown pair). In **Mode B**, power is supplied through the data-carrying wires—pins 1, 2 (orange pair) and 3, 6 (green pair). According to the IEEE 802.3af standard, the voltage range for POE is between 44V and 57V DC. The newer IEEE 802.3at standard increases this range slightly, defining a voltage of 50V to 57V DC. In practice, most devices use the standard wiring configuration where data is transmitted via pins 1, 2, 3, and 6 (the orange and green pairs), while power is supplied through pins 4, 5 (blue pair) as the positive line and pins 7, 8 (brown pair) as the negative line. This method ensures compatibility with a wide range of devices and maintains reliable performance over the full 100-meter limit. Whether you're setting up a small office network or a large-scale surveillance system, understanding how POE works can help you optimize your cabling and power distribution strategy.

Building Cables

Building Cables

they are suitable for power & lighting circuits and building wiring. Also suitable for use as an earth wire the internal wiring of appliances and apparatus.

Essential Guide to Building Wires for Home Safety and Functionality
A safe and functional electrical system is foundational to any modern structure, and "Building Wire And Cable" provide the vital pathways for electricity to travel. These "Building Wires" are also commonly referred to as "House Wiring" and are essential for bringing power to lights, appliances, outlets, and more. Choosing the right "Building Cables" for your home is a critical step for ensuring the safety of the occupants, the efficiency of electricity usage, and the longevity of the electrical system.
In the construction of "House Wiring," several insulated copper conductors, usually encased in a protective jacket, are the norm. The type of material used for the jacket, the conductor size, and the number of conductors define a cable's appropriateness for given applications.
Let`s examine the main components:
Insulation: Wrapping each conductor is a layer of insulation, crucial for preventing electrical leaks and maintaining safety. PVC, known for its cost-effectiveness and resistance to moisture, is widely used, as is THHN insulation, which can handle higher operating temperatures.
Conductors: Copper is typically used as the primary material for conductors in "Building Wire" due to its excellent electrical conductivity and durability.
Jackets: The outer layer of "Building Cables" protects the conductors from damage, moisture, and external conditions. Jackets are often made of PVC for its combination of affordability and resilience; other materials, like nylon, are available for those seeking higher strength and pliability.
Important factors to consider when selecting the appropriate "Building Cables" include:
Circuit Type: "Building Wire" for branch circuits, which power outlets and fixtures, is typically different from feeder circuits that transport power from the main supply to various parts of the house.
Application: "Building Cables" must be chosen according to their ability to carry required currents. This means that wiring for heavy-duty appliances will need thicker conductors.
Location: The installation environment influences the selection of "House Wiring," as some are specifically designed with features for use in damp conditions or outdoor applications.
Wire Gauge: Expressed in AWG , wire gauge affects current-carrying capacity, with larger numbers denoting thinner wires.

Popular "Building Wire" varieties include:
NM-B Cable (Nonmetallic-Sheathed): Suited for indoor use, this cable is adaptable and commonly employed in branch circuitry within protected environments.
THHN/THWN Cable: These cables are designed to resist higher temperatures and are suitable for a multitude of settings, including feeders and branch circuits in both dry or damp areas.
UF Cable (Underground Feeder): Specifically designed for subterranean installation, UF cables are equipped with waterproofing to handle these demanding conditions.
Always allow a certified electrician to execute electrical installations to assure conformity with safety norms and efficiency of installation. The local building codes dictate the specifications and installation techniques, making professional consultation a key element in the safety of your electrical system.

- Standard applied: IEC60227, BS 6004

- U0/U: 450/750V

- Certification: CE

- Flame retardant or fire resistance or Low smoking and Halogen free or other property can be available

Building Cables,House Wiring,Building Wire,Building Wire And Cable

Shenzhen Bendakang Cables Holding Co., Ltd , https://www.bdkcables.com