Hello.
I read that we must ensure some physical separation between the telecommunication cables and electrical power cables. Please, tell me:
- does the communication cable ( UTP, coax. ) from computer to outlet must be separated from power cable for computer, what is max. length of this cables (according what standard),
- must we ensure physical separation between communication cables ( UTP from devices such as switch) and power cable (and grounding wire ) in closets (and according what standard).
What this in National Electric Code (NEC), Article 852 mean:
- Power-limited circuit in compliance with Article 725
- Electric Light, Power, Class 1 cable
- Exception No. 1: Where all of the conductors of electric light, power, Class 1, non–power-limited fire alarm, and medium power network-powered broadband communications circuits are separated from all of the conductors of communications circuits by a barrier.
Is it barrier primary and secondary coating of power or communication cable?
Exception No. 2: Where the communications wires and cables are permanently separated ... by a continuous and firmly fixed nonconductor, such as porcelain tubes or flexible tubing, in addition to the insulation on the wire...
Is it primary and secondary coating of power cable (e.g. for PC, switch) or is it LAN communication cable (UTP, coaxial) ?
Thanks.
I read that we must ensure some physical separation between the telecommunication cables and electrical power cables. Please, tell me:
- does the communication cable ( UTP, coax. ) from computer to outlet must be separated from power cable for computer, what is max. length of this cables (according what standard),
- must we ensure physical separation between communication cables ( UTP from devices such as switch) and power cable (and grounding wire ) in closets (and according what standard).
What this in National Electric Code (NEC), Article 852 mean:
- Power-limited circuit in compliance with Article 725
- Electric Light, Power, Class 1 cable
- Exception No. 1: Where all of the conductors of electric light, power, Class 1, non–power-limited fire alarm, and medium power network-powered broadband communications circuits are separated from all of the conductors of communications circuits by a barrier.
Is it barrier primary and secondary coating of power or communication cable?
Exception No. 2: Where the communications wires and cables are permanently separated ... by a continuous and firmly fixed nonconductor, such as porcelain tubes or flexible tubing, in addition to the insulation on the wire...
Is it primary and secondary coating of power cable (e.g. for PC, switch) or is it LAN communication cable (UTP, coaxial) ?
Thanks.