A wire consists of one or more flexible conductors encased in a lightweight, pliable protective sheath; a cable consists of one or more insulated conductors, further enclosed within a tough outer layer made of metal or rubber. Generally, both cables and wires are composed of three main parts: the core conductor(s), the insulating layer, and the protective outer sheath.
The characteristics of commonly used cables are as follows: CEF-Ethylene-propylene rubber insulation with a neoprene sheath; a marine-grade, flame-retardant power cable. CVV-Polyvinyl chloride (PVC) insulation with a PVC sheath; a marine-grade, flame-retardant power cable. Wiring within oxygen chambers typically utilizes the BV, BX, RV, and RVV series wires, specifically: BV-A copper-core wire with PVC insulation; it has a maximum continuous operating temperature of 65°C and a minimum temperature of -15°C, with an operating voltage of 500V AC or 1000V DC; it is designed for fixed installation, suitable for both indoor and outdoor environments, and can be installed either openly or concealed. BX-A copper-core wire with rubber insulation; it has a maximum operating temperature of 65°C and is intended for indoor installation. RV-A single-core flexible wire with PVC insulation; it has a maximum operating temperature of 65°C and a minimum operating temperature of -15°C, with an operating voltage of 250V AC or 500V DC; it is used for the internal wiring of instruments and equipment.
