Marking of Earthing/Protective Conductor The earthing and protective conductor shall be marked as given in Table 1 (see also I S : 11353-1986*). Use of Bi-Colour Combination — Green and Yellow The bi-colour combination, green and yellow (green/yellow), shall be used for identifying the protective conductor and for no other purpose. This is the only colour code recognized for identifying the protective conductor. Bare conductors or busbars, used as protective conductors, shall be coloured by equally broad green and yellow stripes, each 15 mm up to 100 mm wide, close together, either throughout the length of each conductor or in each compartment or unit or at each accessible position. If adhesive tape is used, only bi-coloured tape shall be applied. For insulated conductors, the combination of the colours, green and yellow, shall be such that, on any 15 mm length of insulated conductor, one of these colours covers at least 30 percent and not more than 70 percent of the surface of the conductor, the other colour covering the remain- der of that surface. We, at Atul Casting and Metal Works manufactures all earthing related products such as G.I Strips, G.I plates, G.I Rods, G.I Pipes, C.I covers, Cable Trays, G.I Wire, Manhole Covers and Route Markers for past 50 + Years in heart of New Delhi. Call us at +91 9873361672 for best deals.