Cables by Type
Tree Wire
● Power Distribution: Used in overhead power distribution systems, especially in wooded or forested areas where tree branches are likely to come into contact with power lines.
● Rural and Suburban Areas: Ideal for rural and suburban settings where vegetation management is challenging.
Spacer wire
Spacer wire systems are designed to maintain the spacing between multiple conductors in overhead distribution networks. This system uses insulated cables supported by a high-strength messenger wire, which helps maintain proper conductor spacing and reduces the likelihood of short circuits and outages caused by conductor contact or wind-induced movement.
It is made of multiple aluminum or aluminum alloy conductors, insulated with materials such as XLPE or EPR to provide electrical insulation and mechanical protection, and supported by a high-strength messenger wire (usually made of galvanized steel or aluminum-clad steel) that maintains proper spacing and provides mechanical support.
● Urban and Suburban Distribution: Used in areas where maintaining consistent conductor spacing is crucial, such as densely populated urban and suburban regions.
● Adverse Weather Conditions: Effective in regions prone to high winds, ice, or other adverse weather conditions that can cause conductor movement and potential faults.
Standard
ICEA S-121-733
1. Title: TREE WIRE AND MESSENGER SUPPORTED SPACER CABLE
2. Scope: ICEA S-121-733, developed by the Insulated Cable Engineers Association (ICEA), applies to the materials, constructions, and testing of tree wire and messenger supported spacer cable. These conductors are intended primarily for the distribution of electrical energy under normal conditions of overhead (aerial) installations. This standard covers both thermoplastic and crosslinked polyethylene constructions, rated for 75°C or 90°C normal conductor temperatures respectively.
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