Two lacing bars, depending on equipment height, gets a little tight sometimes.

If the majority of equipment has power on left, vertical power goes on the left. The devices with power on the right have the power cord strapped horizontally on the shelf or under it if rack mount then go back to the left where it will then exit to the lacing bar. All devices get custom lengths for power cords so you aren’t having to find space to coil or zigzag extra cable.