An electrical cable assembly comprising first and second electrical cables (110, 120), each cable (110, 120) comprising a plurality of conductor sets (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d) extending along a length of the cable assembly and being spaced apart from each other along a width of the cable assembly, the first electrical cable comprising at least first and second conductor sets (130a, 130b, 130c, 130d) each comprising at least two insulated conductors (132a, 134a), each conductor set (140a, 140b, 140c, 140d) in the second electrical cable comprising at least one insulated conductor (142a, 144a), each conductor set (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d) in the first and second electrical cable (110, 120) comprising: first and second carrier films (112, 114, 122, 124) disposed on opposite first and second sides of the electrical cable (110, 120), the first and second carrier films (112, 114, 122, 124) including cover portions (116, 126) and pinched portions (118, 128) arranged such that, in transverse cross section, the cover portions of the first and second carrier films (112, 114, 122, 124) in combination substantially surround each conductor set (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d), and the pinched portions (118, 128) of the first and second carrier films (112, 114, 122, 124) in combination form pinched portions (118, 128) of the cable (110, 120) on each side of each conductor set (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d); and an adhesive layer (113, 123) bonding the first and second carrier films (112, 114, 122, 124) in the pinched portions (118, 128) of the cable (110, 120); wherein the first and second electrical cables (110, 120) are arranged such that each conductor set (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d) of each cable (110, 120) is disposed within a pinched portion (118, 128) of the other cable (110, 120), and wherein at least one of the first and second electrical cables (110, 120) includes a slot (115a-115d, 125a,-125d) in the pinched portion (118, 128) of the cable (110, 120) that extends through the cable (110, 120), the slot (115a-115d, 125a,-125d) having a slot width that is not greater than a width of the pinched portion (118, 128) and a slot length that is less than the length of the cable (110, 120), the slot (115a-115d, 125a,-125d) being sufficiently wide to allow an insulated conductor (132a, 134a, 142a, 144a) of a conductor set (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d) of the other cable (110, 120) that is disposed in the pinched portion (118, 128) to at least partially penetrate the slot (115a-115d, 125a,-125d). first and second carrier films (112, 114, 122, 124) disposed on opposite first and second sides of the electrical cable (110, 120), the first and second carrier films (112, 114, 122, 124) including cover portions (116, 126) and pinched portions (118, 128) arranged such that, in transverse cross section, the cover portions of the first and second carrier films (112, 114, 122, 124) in combination substantially surround each conductor set (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d), and the pinched portions (118, 128) of the first and second carrier films (112, 114, 122, 124) in combination form pinched portions (118, 128) of the cable (110, 120) on each side of each conductor set (130a, 130b, 130c, 130d, 140a, 140b, 140c, 140d); and an adhesive layer (113, 123) bonding the first and second carrier films (112, 114, 122, 124) in the pinched portions (118, 128) of the cable (110, 120);