A system including an AC source, a load and a capacitive device for an alternating current circuit interposed between said AC source and said load, said capacitive device comprising: a set of terminals (A1, A2, B1, B2) comprising at least first and second input terminals (A1, A2) and at least first and second output terminals (B1, B2), said first and second input terminals (A1, A2) being connected to said AC source and said first and second output terminals (B1, B2) being connected to said load whereby power from said AC source is provided to said load through said capacitive device; and at least one power transfer and isolator module, characterized in that each of said at least one power transfer and isolator module comprises a first set of two electrode assemblies (103, 104) comprising two isolated input electrodes (103, 104), a first one of said input electrodes being connected to said first input terminal and a second one of said input electrodes being connected to said second input terminal; and a second set of electrode assemblies (105, 106) comprising two isolated output electrodes (105, 106), a first one of said output electrodes being connected to said first output terminal and a second one of said output electrodes being connected to said second output terminal; said first and second input electrodes (103, 104) both being situated between said first and second output electrodes (105, 106), said first and second input electrodes (103, 104) being spaced apart from one another and being spaced apart from an adjacent one of said first and second output electrodes (105, 106) to enable capacitance to develop between each of said first and second input electrodes (103, 104) and each of said first and second output electrodes (105, 106). a set of terminals (A1, A2, B1, B2) comprising at least first and second input terminals (A1, A2) and at least first and second output terminals (B1, B2), said first and second input terminals (A1, A2) being connected to said AC source and said first and second output terminals (B1, B2) being connected to said load whereby power from said AC source is provided to said load through said capacitive device; and at least one power transfer and isolator module, characterized in that each of said at least one power transfer and isolator module comprises a first set of two electrode assemblies (103, 104) comprising two isolated input electrodes (103, 104), a first one of said input electrodes being connected to said first input terminal and a second one of said input electrodes being connected to said second input terminal; and a second set of electrode assemblies (105, 106) comprising two isolated output electrodes (105, 106), a first one of said output electrodes being connected to said first output terminal and a second one of said output electrodes being connected to said second output terminal; said first and second input electrodes (103, 104) both being situated between said first and second output electrodes (105, 106), said first and second input electrodes (103, 104) being spaced apart from one another and being spaced apart from an adjacent one of said first and second output electrodes (105, 106) to enable capacitance to develop between each of said first and second input electrodes (103, 104) and each of said first and second output electrodes (105, 106). a first set of two electrode assemblies (103, 104) comprising two isolated input electrodes (103, 104), a first one of said input electrodes being connected to said first input terminal and a second one of said input electrodes being connected to said second input terminal; and a second set of electrode assemblies (105, 106) comprising two isolated output electrodes (105, 106), a first one of said output electrodes being connected to said first output terminal and a second one of said output electrodes being connected to said second output terminal; said first and second input electrodes (103, 104) both being situated between said first and second output electrodes (105, 106), said first and second input electrodes (103, 104) being spaced apart from one another and being spaced apart from an adjacent one of said first and second output electrodes (105, 106) to enable capacitance to develop between each of said first and second input electrodes (103, 104) and each of said first and second output electrodes (105, 106).