Overhead Conductor Cable Sizes

The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 volts 60 c through 90 c 140 f through 194 f not more than three current carrying conductors in raceway cable or earth directly buried based on ambient air temperature of 30 c 86 f.

Overhead conductor cable sizes.

To calculate ground wire size use the ground wire size calculator. Table of common electrical wire sizes and amps or fuse ratings residential sec cable other wire ampacities for 1 3 current carrying conductors in cable earth or raceway for 120 240 volt systems sized between 100 and 400 amperes. 73 electric utility trapezoidal wire tw conductors for overhead transmission conductor applications general cable supplies tw compact style conductors. A more common approach is covered line wire.

Aac aaac acsr form part of the family of overhead conductors transmission conductors and power distribution conductors. Electrical conductor wire size or gauge awg or kcmil. Selecting a proper type of conductor for overhead lines is as important as selecting economic conductor size and economic transmission voltage a good conductor should have the following properties. Common conductors are copper and aluminum.

Conductor choose the material used as a conductor in the wire. One of these wires is a ground wire which can be sized down. An overhead line with bare conductors insulated by air is typically less costly than a cable with insulated conductors. Insulation select the thermal rating of the insulation on the wire.

These acsr conductors are made available in broad range of steels varying from as low as 6 to as high as 40. Accr or other types of conductors. A conductor is one of the most important components of overhead lines. Ampacity rating copper wire conductors.

All aluminium conductors steel reinforced acsr consists of stranded or solid steel core enclosed by strands of aluminum. Acsr bare overhead conductor product construction acsr is a composite concentric lay stranded conductor consisting of a central steel core around which are stranded one or more layers of aluminum alloy 1350 h19 wires. The aluminum wires in a round wire stranded conductor leave approximately 25 of an air gap between the aluminum strands. The steel core may consist of a single wire 7 19 37 or more concentrically stranded wires.

These cables are formally known as all aluminium conductor aac all aluminium alloy conductor aaac and aluminium conductor steel reinforced acsr.