While designing underground electrical cabling what are the standards in deciding depth and lateral clearances with respect to other services like sewage, water lines; telecommunication, data cables etc. ?
IS 1255 gives minimum depth required, however when for example cable is to be laid along some u/g utility pipe line what shall be the horizontal clearance and what shall be at lower level w r t GL. What practice is followed and as per what standards. Is there any reference in NBC, or what standards / practices are followed in developed countries