![]() The interface specifications for the BNC and many other connectors are referenced in MIL-STD-348. They are usually applied for frequencies below 4 GHz and voltages below 500 volts. BNC connectors are made to match the characteristic impedance of cable at either 50 ohms or 75 ohms (with other impedances such as 93 ohms for ARCNET available though less common). Above 4 GHz, the slots may radiate signals, so the connector is usable, but not necessarily stable, up to about 11 GHz. This dielectric causes increasing losses at higher frequencies. It uses an outer conductor with slots and some plastic dielectric on each gender connector. The BNC connector features two bayonet lugs on the female connector mating is fully achieved with a quarter turn of the coupling nut. Similar radio-frequency connectors differ in dimensions and attachment features, and may allow for higher voltages, higher frequencies, or three-wire connections. The type was introduced on military radio equipment in the 1940s and has since become widely applied in radio systems, and is a common type of video connector. ![]() The connector has a twist to lock design with two lugs in the female portion of the connector engaging a slot in the shell of the male portion. It is usually applied for video and radio frequency connections up to about 2 GHz and up to 500 volts. It is designed to maintain the same characteristic impedance of the cable, with 50 ohm and 75 ohm types being made. Whether you just need to pick up a coaxial cable or butt connector or need to learn how to run electrical wiring in a new home or addition, we’ve got all of the supplies, tools and knowledge you need to safely do the job.The BNC connector (initialism of "Bayonet Neill–Concelman") is a miniature quick connect/disconnect radio frequency connector used for coaxial cable. For a more in-depth look, check out or Electrical Wire and Cable Buying Guide. These are just a few of many wiring types that we carry. ![]() Available in 20 or 18 gauge with up to 10 conductors. Thermostat Wire: Used in heating and A/C systems. MC Cable: Metal clad cable is heavily used in commercial work, for running through concrete or other commercial environments. It’s often used for lighting and outlet circuits. Romex Wiring: Romex is a trade name for electrical conductor wiring that’s commonly used as residential branch wiring. Features a central conductor with a dielectric insulator, metallic shield and plastic jacket. Orange: 10-gauge wire, commonly used for A/C units and water heatersīlack: Eight and lower-gauge wire, used for feeding a subpanel, electric range, oven and moreĬoaxial Cable: Metallic cable that carries television and video signals and connects to video equipment. Yellow: 12-gauge wire, used regularly in households for general power to outlets and appliances White: 14-gauge wire, used for lighting circuits N: Nylon coating resistant to oil or gas damageĬolor-coded jackets are used on non-metallic (NM-B) wiring as a simple way to identify the gauge of the wires inside: Below are some common letters and attributes seen regularly in residential wiring: ![]() THHN is the most commonly used wire in conduit and cable trays for services in commercial or industrial applications. Some common codes include THHN, XHHW and THW. The National Electrical Code (NEC) has a letter system that makes it easy to quickly identify a wire’s capabilities. On wiring jackets, you’ll see a letter code, which provides attributes of the wire including material, gauge and voltage rating. Below we’ll provide some helpful information to make it easier to identify the many types of wiring available. There are a variety of cables and connectors that offer different uses, from doorbell wiring and thermostat wiring to speaker wire, ethernet cord wires, weatherproof wiring connectors and more. In fact, the average home has about two miles of cable running through it. Electrical wiring and electrical connectors are essential.
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