Thanks for the information, we've not yet checked what is in there just yet. I was unaware of the A B C D ratings of these units and just wanted a bit of background before we go in and put our theory forward, will keep you posted.
Cheers
In my workplace there has been periodic complaints of a particular room losing all power whilst they are working. I have heard the electricians have been in and checked things out and have given the electrical system a clean bill of health. They reckon it could be a particular piece of equipment...
