6243B vs 6243Y

6243B, 6243B cable, 6243B LSZH, 6243B 3 core earth, 6243B1.0, 6243B1.5, 6243B2.5, 6243Y, 6243Y cable, 6243Y 3 core earth, 6243Y1.0, 6243Y1.5, 3 core and earth, 3 core earth cable, three core cable, 3C+E cable, 3 core flat cable