There are many kinds of flexible power cable types, which are in flexible conductor of copper wires with PVC, rubber or other material insulation.

1.flexible cable 3 core

Rubber flexible cable in 3 cores from the size from 1 sq.mm to 300 sq.mm for general purpose.
black rubber flexible cable 1.5mm 3-core

2.flexible power cable types

PVC flexible cable types: H03VV-F, H05VV-F

Rubber flexible cable types: H05RR-F, H05RN-F, H07RN-F

3.black rubber flexible cable 1.5mm 3-core

3 core 1.5 mm is in copper conductor, EPR compound insulation, PCP compound sheath, Heavy duty rubber flexible cables.

Rated voltage: 450/750V

Cores identification 3 cores: Green/Yellow, Blue, Brown