Hi - I'm trying to renovate an older house, and specifically modify the lighting in one room where I currently have a particular ceiling rose which is switched from either of two wall switches. Can anyone explain how I need to wire an additional switch into the existing circuit(s), such that the light may be switched from any of the 3 switches ? or point me to a suitable reference ? I understand and have traced the current wiring, and presume I need to get a third switch in-between the others, but am not sure how they should be wired - and it's doing my head in !!! Thanks for any help. :confused: :confused: :confused: :confused: :confused:

I recently installed a 250 volt 30 amp dual pole circuit to my garage. 10/2 wire from breaker to dryer outlet. Question is this. I need to make an extension cord of sorts for this item. (Welder). I thought I could take 10/2 wire put a dryer plug on one end and a dryer outlet on the other.(Flush type enclosed) When I started to wire everything up to make the extension cord, I discovered that the dryer outlet is marked non-grounding and has a caution that "This device is not for grounding use." on the box. What the heck is it talking about and can I use it to complete my extension cord for the welder?