Sorry Im a bit late with this but the "Big Paper weight" on my desk has been doing just that for the last few weeks. The Department of Clinical Engineering, Royal Liverpool University Hospital, do some realy good one day courses on Safety and Electricity at work. Michael.Michael Hare. Senior Rhabilitation Engineer. Wheelchair & Prosthetics Service. Chapel Allerton Hospital. Leeds LS7 4SA. Tel : 0113 3924981 Mobile : 07949 102232 email : [log in to unmask]