By CSA on 24 January, 2013 - 7:35 pm. Triad cable is three wires (conductors; cores) that are twisted and shielded, usually in a plastic cover/jacket. A triad would only provide you with three wires/conductors/cores, and a properly-applied 4-wire RTD requires 4 (four) wires/conductors/cores. You could use two (2) two-wire (conductors; cores) twisted, shielded pair cables for a total of four wires/conductors/cores--which is what should be used for a 4-wire RTD.
The solution for crusty scalp is to purify the root and scalp and help to ph balance the skin on the scalp. This allows the natural zinc barrier in the scalp to act as it should to ward off any bacteria.
Because hair can help trap dirt and oil next to the scalp, treating this form of acne can be a bit more of a challenge. To help reduce scalp acne, I recommend shampooing more frequently using a mild shampoo. This will help remove dirt and oil from the scalp. My favorite shampoo for the task is Menscience Daily Shampoo which contains salicylic acid -- this ingredient helps shed dead skin and deep cleans the scalp.