When it comes to running low voltage data cables for networks, security systems, audio/video distribution and other applications, following proper installation standards is crucial. The Building Industry Consulting Service International (BISCI) has developed comprehensive guidelines for low voltage cabling that help ensure systems are installed safely, provide reliable performance, and allow for future upgrades. MetroTech Solutions is BISCI certified and installs all data cabling to BISCI standards.
BISCI Cable Installation Requirements
The BISCI standards cover requirements for cable selection, pathways, termination, testing and labeling of low voltage cables. Some of the key installation guidelines include:
Cable Selection
BISCI specifies using isolated ground cables with an isolated ground conductor to help mitigate electromagnetic interference. Shielded twisted pair (STP) cables are recommended for horizontal cable runs between telecommunications rooms and work areas. Plenum rated cables must be used in air handling spaces.
Pathways
Cables should be run through dedicated pathways and spaces to keep them separated from potential sources of interference like power cables, lighting, appliances and electrical equipment. BISCI also requires cables to be kept at least 2 inches away from power conductors. Cables cannot be tie-wrapped or bundled to power cables.
Cable pathways need to be properly supported using cable tray, J-hooks, D-rings or conduits secured at regular intervals. Exposed cables must be protected from potential damage and not installed in a way that could create tripping hazards.
Termination & Testing
BISCI standards require using the T568A or T568B wiring scheme for terminating twisted pair cables into jacks and patch panels. Horizontal cable runs must be no longer than 295 feet. All cables need to be properly labeled at both ends and documented to BISCI’s administration standard.
In addition, BISCI requires testing all cables after installation to verify they meet performance specifications. Qualified technicians use a cable certifier to check for continuity, shorts, reversals and measure parameters like near end crosstalk and attenuation.
Other Guidelines
Along with cabling requirements, BISCI also covers other aspects like grounding, bonding, surge protection, service loops, cable termination locations and identification. The BISCI standards serve as a valuable reference for low voltage installers to ensure wiring jobs meet the necessary safety, usability and future proofing guidelines.
Adhering to BISCI Low Voltage Installation Standards
While the BISCI low voltage standards aren’t legal requirements, following them is considered best practice for both residential and commercial installations. Major manufacturers and professional installation companies rely on BISCI for their guidelines to provide the best quality and most reliable data cabling systems.
Having properly installed low voltage cabling that meets BISCI specifications helps avoid issues with electromagnetic interference, premature cable failure, lack of grounding/bonding, poor documentation and inability to support future system upgrades. It ensures networks, security gear, audio/video distribution and other critical systems will have the infrastructure in place for optimal performance now and down the road.
For any significant residential or commercial low voltage installation, MetroTech Solutions has the product knowledge, tools and installation expertise to get the cabling done right from the start. Get a free quote today.