Of particular importance in dealing with the problem of stray voltage is adequate bonding of all accessible metalwork in milking parlours and the installation of a metallic grid in the floor structure to minimise the problem. The Department of Agriculture, in recognition of this, has been offering grants to farmers who upgrade their dairies to modern standards, including bringing the electrical installation up to ETCI national wiring regulation standards. Such voltages do not endanger the life of the animal but do cause anguish and affect milk production. The problem is a difficult one as very low voltages of even less than one volt can cause distress to cattle. The ETCI's concern was stimulated by discussions with the Department of Agriculture in the early 1990s. Indeed, problems with cattle and stray voltage on farms has been a particular concern for the ETCI for years and its rules reflect the most modern thinking. The wiring regulations relating to agricultural installations are well documented in part 7 of the Electro-Technical Council of Ireland's 'National Rules for Electrical Installations'.

Sir, - The report by your Agriculture Correspondent, Sean MacConnell on stray voltage in farms was interesting and topical.