A cable lockout device (10, 210) comprising: a cable (12, 212); a housing (18, 218) receiving the cable (12, 212) in which the cable (12, 212) forms a loop (14, 214) external to the housing (18, 218), the housing (18, 218) having a passageway extending therethrough through which the cable (12, 212) extends and having a cable gripping location (32, 232) positioned along the passageway; a first cleat (76, 276) supported by the housing (18, 218) at the cable gripping location (32, 232) and having a first cleat axis (B-B) that is fixed with respect to the housing (18, 218); a locking arm (34, 234) rotationally coupled to the housing (18, 218) about a locking arm rotational axis (A-A) and movable between an open position and a closed position in which, in the closed position, the locking arm (34, 234) is lockable relative to the housing (18, 218) to prevent movement of the locking arm (34, 234) back to the opened position without first unlocking the locking arm (34, 234) relative to the housing (18, 218), further in which the locking arm (34, 234) actuates a second cleat (78, 278) that is a cam having a second cleat rotational axis (C-C) spaced from the locking arm rotational axis (A-A) and is the second cleat rotational axis (C-C) being movable with respect to the housing (18, 218) by virtue of a movement of the locking arm (34, 234), the second cleat (78, 278) being brought towards the first cleat (76, 276) at the cable gripping location (32, 232) when the locking arm (34, 234) is moved to the closed position of the locking arm (34, 234) and moved away from the first cleat (76, 276) at the cable gripping location (32, 232) in the opened position of the locking arm (34, 234). a cable (12, 212); a housing (18, 218) receiving the cable (12, 212) in which the cable (12, 212) forms a loop (14, 214) external to the housing (18, 218), the housing (18, 218) having a passageway extending therethrough through which the cable (12, 212) extends and having a cable gripping location (32, 232) positioned along the passageway; a first cleat (76, 276) supported by the housing (18, 218) at the cable gripping location (32, 232) and having a first cleat axis (B-B) that is fixed with respect to the housing (18, 218); a locking arm (34, 234) rotationally coupled to the housing (18, 218) about a locking arm rotational axis (A-A) and movable between an open position and a closed position in which, in the closed position, the locking arm (34, 234) is lockable relative to the housing (18, 218) to prevent movement of the locking arm (34, 234) back to the opened position without first unlocking the locking arm (34, 234) relative to the housing (18, 218), further in which the locking arm (34, 234) actuates a second cleat (78, 278) that is a cam having a second cleat rotational axis (C-C) spaced from the locking arm rotational axis (A-A) and is the second cleat rotational axis (C-C) being movable with respect to the housing (18, 218) by virtue of a movement of the locking arm (34, 234), the second cleat (78, 278) being brought towards the first cleat (76, 276) at the cable gripping location (32, 232) when the locking arm (34, 234) is moved to the closed position of the locking arm (34, 234) and moved away from the first cleat (76, 276) at the cable gripping location (32, 232) in the opened position of the locking arm (34, 234).