When the electrical industry require to lay the cables it doesn’t simply lay the cables on bare floor. its is led on special space called cable tray . they are made of galvanized aluminum. they are led horizontal, vertical depends on the cable path.
Cable trays are fixed with L angle irons and fixed them on concrete using anchor bolts. these fixtures should be so strong that they need to carry heavy weight .
Lower cable tray for higher power cable . Above one is for control cables . Top one is for instrument cables. the reason for this order is each every cable signals can be disrupted with electro magnetic induction while carrying current. According to the number of cables sizes of the cable can be chosen. it varies from 25 to 500 also. keep some distance for walking while making the concrete path since electrician have to go up and down to lay and arrange cables. make sure you tie the cables in to the cable tray if not at the end all will be mixed and aesthetic way will be disrupted.
when you lay cable trays make sure you keep sufficient spaces for walking. There will be pre made cable tray bends or you can cut two spaces and arrange a bend and wield it. if you cannot reach the far end use flexible hoses .