What is NEC Article 800?
What is NEC Article 800?
Article 800 is titled “Communication Circuits.” Within the NEC it goes on to define the scope of the article in 800.1 as: “This article covers communication circuits and equipment.” Therefore, to understand the scope of this article, it is necessary to understand the definition of a communication circuit.
What NEC article covers access control wiring?
The three primary sections with which low-voltage installers need to be concerned are Article 725, which covers remote control and power-limited circuits (burglar alarm, access control and intercom circuits); Article 760, which covers fire alarm circuits; and Article 800, which covers communication circuits such as …
What is CL3X or CL2X cable used for?
Types CL2X and CL3X limited-use cables shall be marked as Type CL2X or CL3X, and be listed as suitable for use in dwellings and raceways and shall be listed as resistant to flame spread.
What is class1 wire?
A class 1 circuit is the portion of the wiring system between the load side of the overcurrent protection device (OCPD) or the power-limited supply and the connected load. Class 1 circuits can be 600 volts or less, but 120 volts are more common and are usually preferred by OSHA inspectors for safety reasons.
Can you run 0 10V dimming wires conduit?
Running 0-10V dimming wires in the same conduit as line voltage is not recommended. The NEC does say that Class 1 and Class 2 wiring in the same conduit is NOT allowed, regardless of the insulation rating of the conductors. They need to be ran separately or at least separated by a continuous barrier.
Should ground wire be shielded?
The cable shielding and its termination must provide a low-impedance path to ground. A shielded cable that is not grounded does not work effectively. Any disruptions in the path can raise the impedance and lower the shielding effectiveness.
What does TSB stand for?
From Wikipedia, the free encyclopedia. Technical Service Bulletins, or TSBs, document recommended procedures for repairing vehicles, issued by a vehicle manufacturer when there are several occurrences of an unanticipated problem.
What is the difference between FT4 and FT6?
FT4 and FT6 are Canadian fire code standards related to the fire and smoke retardancy characteristics of communications cable. FT4 is roughly equivalent to USA CMR(riser) rating and FT6 is equivalent to CMP (plenum) rating in the USA.
What is CL3R rating?
Our CL3R Unshielded Riser cable is suitable for power-limited circuits and intercom, security, audio, and background music wiring applications. This cable has a suggested voltage rating of 300 volts and a temperature range of -20°C to 75°C.
