The space above switchboards, switchgear, panelboards, or MCC that is equal to the width and depth of the equipment and extending from the floor to a height of 6' above the equipment or the structural ceiling, whichever is lower, shall be dedicated to the electrical installation. What other system is permitted to occupy this space?
- Hot water piping, provided there is a drip pan0
- A heating duct that is emerging from the wall directly behind a panelboard0
- A suspended gypsum board ceiling that has been taped and painted1
- A suspended ceiling with removable panelsYour vote4