To provide a color and identification specification of the cabling used for OPP FAS Controls and Communication Cables.
In the effort to standardize the cabling used across the OPP FAS Controls networks, this document will provide the single source of truth on the cabling identification.
Review and Discuss this Appendix with the OPP BAS group before purchases and implementation.
ll CAT6 cable shall have the following characteristics clearly identifiable upon inspection or it is considered non-compliant and will be removed and replaced with compliant cable at the vendor's expense.
● Solid Green in color.
● Markings identifying feet/meters imprinted on the cable jacket by the cable manufacturer.
● When required, plenum rated.
● Circuit identification
○ Circumferentially colors 100% of the conductor for easily identifiable tip and ring mates.
○ Distinct colors
○ Permanent, environmentally friendly color that doesn’t wear off.
Pair Copper Cable
ll ARCnet 156 cable shall have the following characteristics that are clearly identifiable upon inspection or it will be considered non-compliant and will be removed and replaced with compliant cable at the vendor’s expense.
Jacket shall be solid
olor, with the following identifiers of the networks in a given building:
○ Green/Brown stripe Network 1
○ Green/Red stripe Network 2
○ Green/Orange stripe Network 3
○ Green/Yellow stripe Network 4
○ Green/Blue stripe Network 5
○ Green/Purple stripe Network 6
○ Green/Grey stripe Network 7
○ Green/White stripe Network 8
○ Green/Gold stripe Network 9
○ Green/Black stripe Network 10
● Circuit identification shall be circumferentially colors 100% of the conductor for easy identification of the tip and ring mates. Colors shall be black and white.
1.1.5 Rnet (for Automated Logic ZS room sensors)
All Rnet cable shall have the following characteristics that are clearly identifiable upon inspection or it will be considered non-compliant and will be removed and replaced with compliant cable at the vendor’s expense.
● Cable Description: 18 AWG 2 Pair Bare Copper, Individually Shielded Plenum, UL Listed C(UL)US CMP
Shielded Plenum BAS/Temperature Control Cables Specifications:
Conductor: 18 AWG (7/26 Bare Copper)
● 18 AWG 2 Pair Bare Copper, Individually Shielded Plenum BAS/Temperature Control Cable shall be Windy City Wire 160100 or approved equal.
ll MODBUS/MSTP cable shall have the following characteristics that are clearly identifiable upon inspection or it will be considered non-compliant and will be removed and replaced with compliant cable at the vendor’s expense.
Jacket shall be solid
in color, with the following identifiers of the networks in a given building:
● A minimum of three conductors, but the shield may be used as the common conductor, so shielded two conductor cable may be used. If you do not use shielded cable, then at least three conductors are required. Some RS-485 devices do not use a common connection, but we recommend always connecting common for reliable performance and to avoid damage due to surges.
● For unterminated networks, the current will generally be less than 10 mA and any gauge should work; we recommend #24 AWG to 18 AWG.
● For terminated networks, the current can be 60 mA or higher, so heavier gauge wire may be needed for very long runs.
○ We recommend #22 to #20 AWG for runs up to 1000 ft. (~300 m).
○ We recommend #20 to #16 AWG for runs up to 4000 ft.( ~1200 m).
● Cables suitable for use in an RS-485 network should have an impedance of between 100 and 130 ohms, a capacitance between conductors of less than 30 pF per foot (100 pF per meter), and a capacitance between conductors and shield less than 60 pF per foot (200 pF per meter).
● Because RS-485 is differential, it is less susceptible to interference, so shielding is not always necessary. However, we recommend shielding for long runs and if there is electrically noisy equipment nearby like variable speed drives. If you use shielded cable, connect the shield to earth ground at one end (generally the PC or RS-485 master).
● Twisted wires are always required .
We recommend wire or cable rated for the highest voltage present.
if you are monitoring a 120/208 Vac panel, you should use 300V rated cable. If you are monitoring a 480Y/
circuit, use 600V rated cable. If you have the power and energy
a separate enclosure and there is no way the mains wires can contact the Modbus output cable, then you could safely use lower voltage rated cable, such as 150V or lower. Long runs of 300V or 600V rated cable may be expensive, so it may be more economical to use lower voltage rated cable and use a protective jacket in the regions where the cable is in the vicinity of dangerous voltages.
Can you run the RS-485 network cable adjacent to or in the same conduit with mains wires?
We strongly recommend against this. There may be interference from the high voltages and currents present on the mains wires, and if there is any insulation fault, arcing, etc. on the mains wires, it could put dangerous voltages on the low-voltage RS-485 network cable.
Binding or Securing Cable—Hook and Loop
Binding or Securing Cable—Hook and Loop Versus Zip Tie
Cable stress, such as that caused by tension in suspended cable runs and tightly cinched bundles, should be minimized. Cable bindings, if used to tie multiple cables together, should be irregularly spaced and should be loosely fitted (easily moveable).
Additional guidance can be found in the BICSI Information Transport Systems Installation Methods Manual (ITSIMM), which reads:
Use hook and loop straps to secure the cables. The hook and loop straps should be evenly spaced throughout the dressed length. Hook and loop straps should be used to prevent a change in the physical geometry of the cable that typically results from use of nylon tie wraps.
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