Underground 185mmsq 3C CU XLPE Medium Voltage Power Cable for Distribution Project Suitable for installations indoors: mostly in power supply stations and outdoors: in cable ducts, underground, and on cable trays for industries, switch-boards and power stations. Your top provider for cables and wires. | NAYY-J 5X185 RM BK von Faber Faber p/nr. Reduced risk of flame propagation in event of fire; flame-retardant according to IEC 60332-1 and IS 10810-53. Good electrical conductivity due to fine-wired copper conductor according to. XLPE insulated 5-core power cables are normally used in power transmission and distribution systems. These cables are used for outdoor and indoor installations in damp and wet applications. Even if there is no product installed on the front, there is a complete cover system to cover the busbar for all-round anti-touch protection.