E-5 20 amp IEC 
 20 amp IEC designed for large diameter power cables with heavy gauge conductors. The non-magnetic anti-resonant shell is plated and clear coated to help reject RFI/EMI noise. Not intended for use on wimpy power cables.
E-5 15 amp IEC
 Standard 15 amp IEC designed for large diameter power cables with heavy gauge conductors. The non-magnetic anti-resonant shell is plated and clear coated to help reject RFI/EMI noise.
E-5 USA
 Standard North American power plug designed for large diameter power cables with heavy gauge conductors. The non-magnetic anti-resonant shell is plated and clear coated to help reject RFI/EMI noise.
E-5 Schuko 
 European Schuko power plug designed for large diameter power cables with heavy gauge conductors. The non-magnetic anti-resonant shell is plated and clear coated to help reject RFI/EMI noise.