9 Accessory devices9.7 Cable and safety devicesDE1… Variable Speed Starter 11/16 MN040011EN www.eaton.com 1419.7 Cable and safety devicesThe mains cables and motor cables must be sized as required by local stan-dards and by the load currents that will be involved. The rated operationalcurrents are specified in Page 119 sqq.. Electric cables with adequateinsulation for the specified mains voltages must be used. The PE conductor’sconductivity must be the same as the phase conductors’ conductivity (samecross-sectional area).In order to meet CE and C-Tick EMC requirements, a symmetrical, fullyscreened (360°) motor cable must be used. It is recommended to use a four-core cable in order to reduce the screening load resulting from leakage cur-rents. A screened cable is not required on the mains side.If the device is being installed as per UL standards, UL-listed fuses andcopper cables with a temperature rating of +75 °C (167 °F) must be used.The motor cable must be an MC cable with a continuously corrugated alumi-num armor and symmetrical protective earth conductors or – if armor is notused – a screened power cable. The motor cable’s length will depend on theEMC category.NOTICEWhen selecting fuses and cables, make sure to always complywith all the regulations that apply at the installation site.
