evening one and all just a short note to introduce myself. i'm a time served electrician and work as a qualifing manager for a medium sized firm in west wales working on anything from from an extra socket or light down to installing fire alarm systems and pir's on large installations , i have had many years experiance testing, fire alarms, industrial installations ,domestic installations and security,cctv systems. i have just done my 17th eddition( :z ) and looking through some of the posts can probably help with some of the am2 questions as i have just helped on of the boys in work do his and am currently helping my brother through his . great site by the way even after 22 yrs in this trade i have still learnt a few things from here.Guiness Drink