A method for reducing a volume of air within an electrical distribution system. The method includes providing at least one cable, surrounding the at least one cable with an isolating unit, placing a first shielding body on a top surface of the isolating unit, placing a second shielding body on a bottom surface of the isolating unit, wherein placing the first shielding body and the second shielding body creates a gap X1 between the first shielding body or the second shielding body and the isolating unit, and crimping the first shielding body to the second shielding body to create a shield housing, so that a gap X2 is created between the first shielding body or the second shielding body and the isolating unit, wherein X2 is less than X1. The at least a portion of the first shielding body may overlap with the second shielding body, and the first shielding body or the second shielding body may include at least one flared portion. The overlap may occur at a location corresponding to the flared portion, with the flared portion having a length N, wherein N may be equal to about 2(X1−X2). Gaps X1 and X2 may be air gaps.