By the integration of electro-conductive properties in the fabric structure can be obtained a flexible textile that does not reduce the quality of comfort, maintenance and wearability of clothing. Each type of yarns has its advantages and disadvantages: metal coated polymer multifilament yarns have a lower resistance to heat than metal multifilament yarns, but they are more flexible. For the experiments are chosen more suitable yarns for knitting with a lower resistance: silver coated multifilament polyamide, stainless steel multifilament yarns and polyester/stainless steel spun yarn. For the tensile experiments were knitted patterns of non-conducting yarn and horizontal loop rows of conducting yarn. Experimental results show different behavior of the knitted conductive yarn by stretching: electric resistance declines for most of the knitted samples; resistance is lower by samples, where are used only conductive yarns; for creating a knitted heating element are suitable yarns, which do not change electrical properties of knitted fabric by stretching.