To be read in conjunction with BS EN 50290-2-20:2001Cross References:EN 60811-1-1:1995IEC 60811-1-1:1993EN 60811-1-2:1995IEC 60811-1-2:1985IEC 60811-1-2:1985/Corr. May 1986IEC 60811-1-2:1985/A1:1989EN 60811-1-3:1995IEC 60811-1-3:1993EN 60811-1-4:1995IEC 60811-1-4:1985IEC 60811-1-4:1985/Corr. May 1986IEC 60811-1-4:1985/A1:1993EN 60811-3-1:1995IEC 60811-3-1:1985IEC 60811-3-1:1985/Corr. May 1986IEC 60093:1980IEC 60250:1969ISO 11357-3:1999