Steel clad 16 SWG, 50 Hz indoor type complete with all wiring provisions bottom, TP + N bars suitably sized and properly insulated arrange, tanding floor mounting stand and short circuit current of 25 KA, all MCCB units and panel boards shall fully comply regulation of 15 th edition, UTEC20-040, VDE-C 110 for 660 V, regulation for isolation and switching.