Can someone point me in the right direction? I remember seeing somewhere (Regs or ACOP?) a specific statement saying that plant rooms, electrical switch/fuse rooms or cupboards etc should have warning signs posted at the point of access or on the door to the room indicating the nature of the hazard etc within. I cannot recall where it says this or where I saw it - can anyone point me in the right direction, (or am I dreaming I read it somewhere)? Thanks in advance.