1 — designation of a current contour 2 — an internal code of designation of the scheme 3 — current proceeds in the direction of an arrow 4 — a screened cable 5 — the contour proceeds on other scheme at number 6 6 — a plug symbol
7 — a code of color of a cable (a symbol of a plait of cables) 8 — number of connection of weight 9 — a plug code 10 — an operational condition of the switch