An apparatus for providing high electrical resistance for an upper control assembly coupled to an aerial work platform of a hydraulic aerial lift, the apparatus comprising: a plurality of hoses disposed through an isolation member (130, 1400) of configured to be coupled to an aerial work platform, wherein the plurality of hoses carry hydraulic fluid or pneumatic air through the isolation member; a fluid tank coupled to the aerial work platform, wherein the fluid tank is disposed on a lower portion of a hydraulic aerial lift that is electrically connected to ground; wherein the isolation member comprises a manifold constructed of material that is substantially electrically non-conductive and that has a plurality of through-holes (1311, 1313, 1315, 1317), wherein the plurality of hoses are disposed in the plurality of through-holes and allow the hydraulic fluid or pneumatic air to flow through the isolation member for controlling operation of the aerial work platform and extend throughout the isolation member, wherein the manifold is in the shape of a polyhedron; wherein the material conducts no more than 400 microamperes at 40 kV AC and no more than 56 microamperes at 56 kV DC, and the plurality of through-holes are configured to allow and withstand hydraulic fluid or pneumatic air to flow through the isolation member at: a) a rate of 22.7 l/min (6 gpm), b) pressure between 20.7 MPa and 41.4 MPa (3000 psi and 6000 psi), and c) a temperature between -40 C and 93.3 C (-40 F and 200 F); wherein the manifold includes a first face and a second face such that the plurality of through-holes extend from the first face to the second face so as to allow the hydraulic fluid or pneumatic air to flow through the plurality of hoses; wherein the plurality of hoses extend from the first face of the manifold and are configured to direct flow of the hydraulic fluid or pneumatic air into the isolation member or to direct flow of the hydraulic fluid from the isolation member; wherein the plurality of hoses extend from the second face of the manifold and are configured to direct flow of the hydraulic fluid or pneumatic air into the isolation member or to direct flow of the hydraulic fluid from the isolation member; wherein the isolation member substantially isolates the aerial work platform from the fluid tank and all electrically connected sources disposed at the lower portion of the hydraulic aerial lift that are electrically connected to the ground; and wherein the material is selected from the group consisting of a plastic, ceramic, and glass material. a plurality of hoses disposed through an isolation member (130, 1400) of configured to be coupled to an aerial work platform, wherein the plurality of hoses carry hydraulic fluid or pneumatic air through the isolation member; a fluid tank coupled to the aerial work platform, wherein the fluid tank is disposed on a lower portion of a hydraulic aerial lift that is electrically connected to ground; wherein the isolation member comprises a manifold constructed of material that is substantially electrically non-conductive and that has a plurality of through-holes (1311, 1313, 1315, 1317), wherein the plurality of hoses are disposed in the plurality of through-holes and allow the hydraulic fluid or pneumatic air to flow through the isolation member for controlling operation of the aerial work platform and extend throughout the isolation member, wherein the manifold is in the shape of a polyhedron; wherein the material conducts no more than 400 microamperes at 40 kV AC and no more than 56 microamperes at 56 kV DC, and the plurality of through-holes are configured to allow and withstand hydraulic fluid or pneumatic air to flow through the isolation member at: a) a rate of 22.7 l/min (6 gpm), b) pressure between 20.7 MPa and 41.4 MPa (3000 psi and 6000 psi), and c) a temperature between -40 C and 93.3 C (-40 F and 200 F); wherein the manifold includes a first face and a second face such that the plurality of through-holes extend from the first face to the second face so as to allow the hydraulic fluid or pneumatic air to flow through the plurality of hoses; wherein the plurality of hoses extend from the first face of the manifold and are configured to direct flow of the hydraulic fluid or pneumatic air into the isolation member or to direct flow of the hydraulic fluid from the isolation member; wherein the plurality of hoses extend from the second face of the manifold and are configured to direct flow of the hydraulic fluid or pneumatic air into the isolation member or to direct flow of the hydraulic fluid from the isolation member; wherein the isolation member substantially isolates the aerial work platform from the fluid tank and all electrically connected sources disposed at the lower portion of the hydraulic aerial lift that are electrically connected to the ground; and wherein the material is selected from the group consisting of a plastic, ceramic, and glass material.