A guarded sprinkler assembly comprising: a sprinkler including: a frame including a body defining an inlet, an outlet and an internal passageway extending between the inlet and outlet along a sprinkler axis, the body including a wrench boss formed about the outlet and an external thread about the body for coupling to fluid supply pipe, the frame including a pair of frame arms formed about the sprinkler body and disposed in a first plane, the frame arms extending from the sprinkler body away from the outlet in the direction of the sprinkler axis; and a deflector member coupled to the frame arms located axially from the body at fixed distance and centered on the sprinkler axis, the deflector having a periphery defining an outer diameter of the deflector; a wire cage disposed about the sprinkler defining an internal volume axially aligned with the sprinkler axis with operational components of the fire sprinkler located within the internal volume, the cage including a plurality of terminal wire free end portions (24a, 24b, 34) and a clamp assembly affixed to the cage, the clamp assembly having a first clamp member and a second clamp member which define a hinged relationship with the cage aligned in the first plane such that at least one of the first and second clamp members (14a, 14b) pivot with respect to the first plane to provide access to a cage opening, the hinged relationship having an open state to define access for locating the operational components of the sprinkler in the internal volume, the hinged relationship having a closed state to restrict the cage opening, characterized in that the plurality of terminal wire free end portions is aligned in the first plane, and the closed state of the hinged relationship defines a plurality of compartments (15a, 15b, 15c) for housing the wire free end portions. a sprinkler including: a frame including a body defining an inlet, an outlet and an internal passageway extending between the inlet and outlet along a sprinkler axis, the body including a wrench boss formed about the outlet and an external thread about the body for coupling to fluid supply pipe, the frame including a pair of frame arms formed about the sprinkler body and disposed in a first plane, the frame arms extending from the sprinkler body away from the outlet in the direction of the sprinkler axis; and a deflector member coupled to the frame arms located axially from the body at fixed distance and centered on the sprinkler axis, the deflector having a periphery defining an outer diameter of the deflector; a frame including a body defining an inlet, an outlet and an internal passageway extending between the inlet and outlet along a sprinkler axis, the body including a wrench boss formed about the outlet and an external thread about the body for coupling to fluid supply pipe, the frame including a pair of frame arms formed about the sprinkler body and disposed in a first plane, the frame arms extending from the sprinkler body away from the outlet in the direction of the sprinkler axis; and a deflector member coupled to the frame arms located axially from the body at fixed distance and centered on the sprinkler axis, the deflector having a periphery defining an outer diameter of the deflector; a wire cage disposed about the sprinkler defining an internal volume axially aligned with the sprinkler axis with operational components of the fire sprinkler located within the internal volume, the cage including a plurality of terminal wire free end portions (24a, 24b, 34) and a clamp assembly affixed to the cage, the clamp assembly having a first clamp member and a second clamp member which define a hinged relationship with the cage aligned in the first plane such that at least one of the first and second clamp members (14a, 14b) pivot with respect to the first plane to provide access to a cage opening, the hinged relationship having an open state to define access for locating the operational components of the sprinkler in the internal volume, the hinged relationship having a closed state to restrict the cage opening, the clamp assembly having a first clamp member and a second clamp member which define a hinged relationship with the cage aligned in the first plane such that at least one of the first and second clamp members (14a, 14b) pivot with respect to the first plane to provide access to a cage opening, the hinged relationship having an open state to define access for locating the operational components of the sprinkler in the internal volume, the hinged relationship having a closed state to restrict the cage opening, characterized in that the plurality of terminal wire free end portions is aligned in the first plane, and the closed state of the hinged relationship defines a plurality of compartments (15a, 15b, 15c) for housing the wire free end portions.