When were ceiling rose junction boxes invented? They appear to be post WW2 as I have been unable to find any that are older. The ceiling roses I have from the 1920s and 30s are either purely mechanical or have terminals just for live and neutral for the light fitting. Were ceiling rose junction boxes intended as a cost saving feature when constructing houses?
Looking to the current version of BS 7671, this gives the product standard for modern ceiling roses as BS 67:1987 (1999), still confirmed current on the 1st May 2017.
If you look to the BSI website at BS 67 the current version was published 27th February 1987, making it BS 67:1987 which corresponds to BS 7671.
It's predecessor BS 67:1969 was published on the 20th June 1969, which was withdrawn on 31st December 1987, so approximately a 6 month overlap of the two.
So I would suspect that the current method of loop at the light came in around 1969/70, so about the time of the metric amendment to the 14th Edition.
Looking to the current version of BS 7671, this gives the product standard for modern ceiling roses as BS 67:1987 (1999), still confirmed current on the 1st May 2017.
If you look to the BSI website at BS 67 the current version was published 27th February 1987, making it BS 67:1987 which corresponds to BS 7671.
It's predecessor BS 67:1969 was published on the 20th June 1969, which was withdrawn on 31st December 1987, so approximately a 6 month overlap of the two.
So I would suspect that the current method of loop at the light came in around 1969/70, so about the time of the metric amendment to the 14th Edition.
