I'm a student from Newcastle University from Singapore Institute of Technology (A new launched University in Singapore) and am majoring in Electrical Power Engineering. My current final year project requires me to research on BS1363 and try to reduce the amount of copper usage as we know that the copper consumption in the world is getting larger and that copper is a natural resource hence it could be said that it has a finite quantity. I am trying to find out the contact resistance = Constriction Resistanc + Filmic Resistance. I do have the formulae available but I do not know what is the radius of the metal to metal contact part. I do not quite know where can I head to towards designing of a new plug to alleviate the copper usage. Many would say that it's redundant to work on this project but it seems that I do not have a choice but to only work on it. I'm not trying to do something illegally if that's what you're thinking. If anyone could help, please. I've been working on this for the past 8 weeks with no results. Any papers/forums/journals/articles/teaching are deeply appreciated. Thanks in advance!