Medium Voltage Cable Ampacity Chart

The number and type of electrical devices connected to a circuit determine the ampacity requirement of the conductor.

Medium voltage cable ampacity chart. Medium voltage cables single conductor. Wire cable type. 15kv epr concentric neutral pe jacket view pdf. Medium voltage conductor ampacities copper conductor size awg kcmil 2001 5000 v 5001 35000 v 90 c.

Voltage minimum size awg 5 kv 8 8 kv 6 15 kv 2 25 kv 1 35 kv 1 0 nec table 310 60 c 79 ampacities of three insulated copper conductors cabled within an overall covering three conductor cable in underground electrical ducts one cable per electrical duct based on ambient earth temperature of 20 c 68 f electrical. 120 240 volt 3 wire single phase service entrance conductors service. Usually a general purpose house circuit is designed for 20. Based on nec table 310 60 c 73 ampacities of an insulated.

Each has a different ampacity for a specified gauge size and these ampacities are found in nec table 310 15 b 16 for the calculations in this app. Home products medium voltage primary underground distribution. Cme wire and cable inc. Unless specifically permitted in section 240 4 e through g the overcurrent.

Current is measured in amperes or amps. The allowable values in the ampacity table are based on temperature alone and do not take voltage drop into consideration. Medium voltage cables mv 105 and mv ud voltage ratings voltage rating insulation level nominal. 15kv trxlpe concentric neutral.

3 c wire armored type iec 60502 2 6 10 15 20 30 kv okoguard shielded power cables copper conductors 90 c rating galvanized steel wire armor pilc pibc cables 33. You must use the correct size wire for the current load requirement of the circuit to prevent the wire from overheating. Ampacity copper and aluminum type mv 90 and mv 105 cables author. Medium voltage primary underground distribution.

For example 3 0 awg copper has an ampacity of 200 amps at 75 while 3 0 awg aluminum has an ampacity of 155 amps at 75. Single conductor cables 19 section 6 ampacity tables table 6 1 correction factors for various ambient air temperatures 21 table 6 2 correction factors for various ambient earth temperatures 21 table 6 3 group correction factors cables in air 21.