NOTE Consumer piping should not be used as a component of an earthing system of any electrical installation. Refer to AS/NZS 3000(e) protected against abrasion, kinking or permanent deformation.5.2.2 Piping in caravansThe main run of the piping system shall be located outside the caravan regardless of the number of appliances connected to the pipework.In addition to Clause 5.2.1, piping in caravans shall be —(a) firmly fastened in a protected location so that all hoses, unions and joints are accessible, and all shut-off valves are readily accessible. Any void between the living space and a false bottom containing consumer piping shall be sealed from the living space and shall be provided with a minimum 500 mm2 ventilation area adjacent to any unions and joints to allow leaking gas to escape to atmosphere;(b) arranged such that the branch pipe separately enters the interior of the caravan adjacent to each appliance; and(c) where the piping lies along the chassis, fastened to the side of a structural member and not beneath it.5.2.3 Piping in boatsIn addition to Clause 5.2.1, piping in boats shall be —(a) firmly fastened in a protected location outside any structure or false bottom. All hoses, unions and joints shall be accessible, and all shut-off valves shall be readily accessible;(b) constructed from continuous lengths from regulator to branch points and from those points to the appliance unless it can be demonstrated that this is impracticable; and(c) continuous where passing through an engine room or sleeping accommodation space.Penetrations of decks or bulkheads shall be sealed to prevent vapour entry.5.2.4 Rigid pipingIn all cases, installed rigid piping shall be —(a) protected from direct contact with metallic parts of the structure; and(b) at least 100 mm from exposed live parts of electrical fittings.5.2.5 Hose assembliesHose assemblies shall be —(a) of a continuous length and as short as practicable for its application;(b) used only between the regulator and rigid piping and between rigid piping and appliances, or where there is only one appliance, directly between the regulator and the appliance; and(c) installed so that the possibility of damage by rodent attack is minimized and they are —(i) not subjected to temperatures above 65 °C;(ii) at least 100 mm from components of the engine exhaust system;(iii) protected from exposure to ultraviolet light; and