Similarly to the group of round cables, they are used permanently in dry rooms on plaster, under plaster or directly in plaster (voltage of 300/500V). They can also be placed permanently in power devices.
YDYp, YDYpżo, YDYt based on PN-87/E-90060
UK Ref. 624(*)Y, B, 6193YE based on BS 6004
CYKYLo based on ZN-TF-218
TPS based on AZ/NZS 5000,2