Echelon Series 6000 Chip databook - Manual (Page 143)

Notes:
• AWG: American wire gauge. See ASTM B258 - 02(2008) Standard Specification for
Standard Nominal Diameters and Cross-Sectional Areas of AWG Sizes of Solid
Round Wires Used as Electrical Conductors ( www.astm.org/Standards/B258.htm ) for
a definition of the wire gauges.
• NEMA: National Electrical Manufacturers Association. www.nema.org
• TIA: Telecommunications Industry Association. www.tiaonline.org
The Junction Box and Wiring Guidelines for Twisted Pair LONWORKS Networks
engineering bulletin (005-0023-01) provides a list of cable vendors for each cable type. This
document is available from the Echelon website ( www.echelon.com ).
Category 5 and 6 Cable Specifications
The specification for the Telecommunications Industry Association Commercial Building
Telecommunications Cabling Standard (ANSI/TIA/EIA-568-A-95) is available from
Information Handling Services (IHS) at global.ihs.com .
NEMA Type 4 Cable Specifications
The Type 4 cable specification used by Echelon, and as originally defined by the National
Electrical Manufacturers Association (NEMA), differs from the Category IV specification
proposed by the Electronic Industries Association/Telecommunication Industry Association
(EIA/TIA).
Tables 36 through Table 39 list the Type 4 cable specifications. In the tables, specifications
apply to shielded or unshielded 22 AWG (0.65 mm) cable, unless listed otherwise.
Table 36. General Specifications
Specification Value
DC Resistance (ohms per 1000 feet at 20
°C) maximum for a single copper conductor
regardless of whether it is solid or stranded
and is or is not metal-coated
18 [for 22 AWG (0.65 mm) cable]
28.6 [for 24 AWG (0.5 mm) cable]
DC Resistance Unbalance (percent)
maximum
5
Mutual Capacitance of a Pair (pF/foot)
maximum
17
Pair-to-Ground Capacitance Unbalance
(pF/1000 feet) maximum
1000
Series 6000 Chip Data Book 131