Thanks to R.W. Stephens, Richard Hull and Chip for the suggestions and info about the flexible 6/4 cable. Found a local supplier of SO cable for $1.38/ft. It is 1 inch in diameter with thick neoprene insulation and made up of 105 strands of 26 ga wire per conductor and is very flexible. Just what we needed for the supply line to our control box. Our old cable was about as flexible as a broom! Dave Euans