A method for manufacturing a capacitance graded core for a high voltage electrical bushing, the capacitance graded core comprising: - an elongated electrical conductor; - an electrically insulating body disposed around the elongated electrical conductor; and - a plurality of electrodes disposed coaxially to the elongated electrical conductor in the electrically insulating body; the method comprising: a) providing an insulating pre-impregnated fabric made of insulating fibers impregnated with an insulating thermoplastic material, the pre-impregnated fabric having a surface; b) heating the pre-impregnated fabric to melt the thermoplastic material of the pre-impregnated fabric; c) winding the melted pre-impregnated fabric around the elongated conductor while pressing the melted pre-impregnated fabric on the elongated conductor; the method further comprising forming an electrically conductive layer on the surface of the insulating pre-impregnated fabric, this step being repeated intermittently, thereby obtaining a plurality of electrically conductive layers inserted between the windings of pre-impregnated fabric and thus forming the plurality of electrodes. - an elongated electrical conductor; - an electrically insulating body disposed around the elongated electrical conductor; and - a plurality of electrodes disposed coaxially to the elongated electrical conductor in the electrically insulating body; the method comprising: a) providing an insulating pre-impregnated fabric made of insulating fibers impregnated with an insulating thermoplastic material, the pre-impregnated fabric having a surface; b) heating the pre-impregnated fabric to melt the thermoplastic material of the pre-impregnated fabric; c) winding the melted pre-impregnated fabric around the elongated conductor while pressing the melted pre-impregnated fabric on the elongated conductor; the method further comprising forming an electrically conductive layer on the surface of the insulating pre-impregnated fabric, this step being repeated intermittently, thereby obtaining a plurality of electrically conductive layers inserted between the windings of pre-impregnated fabric and thus forming the plurality of electrodes. the method comprising: a) providing an insulating pre-impregnated fabric made of insulating fibers impregnated with an insulating thermoplastic material, the pre-impregnated fabric having a surface; b) heating the pre-impregnated fabric to melt the thermoplastic material of the pre-impregnated fabric; c) winding the melted pre-impregnated fabric around the elongated conductor while pressing the melted pre-impregnated fabric on the elongated conductor; a) providing an insulating pre-impregnated fabric made of insulating fibers impregnated with an insulating thermoplastic material, the pre-impregnated fabric having a surface; b) heating the pre-impregnated fabric to melt the thermoplastic material of the pre-impregnated fabric; c) winding the melted pre-impregnated fabric around the elongated conductor while pressing the melted pre-impregnated fabric on the elongated conductor; the method further comprising forming an electrically conductive layer on the surface of the insulating pre-impregnated fabric, this step being repeated intermittently, thereby obtaining a plurality of electrically conductive layers inserted between the windings of pre-impregnated fabric and thus forming the plurality of electrodes.