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Old 10th Jun 2019, 12:57 pm   #59
broadgage
Nonode
 
Join Date: Jan 2010
Location: North Somerset, UK.
Posts: 2,130
Default Re: The lightbulb conspiracy

Years ago, there used to exist "double festoon lamp holders" for use in decorative lighting in seaside resorts and the like.
These consisted of a pair of BC holders wired in series and intended to attached to festoon lighting cable.

A pair of 120 volt lamps in series were cheaper to buy, brighter, longer lasting and increased the overall reliability of the display.
The failure of a 240 volt lamp would often operate the fuse and leave dozens of lamps unlit.
The failure of a 120 volt lamp extinguished only one other lamp.

Both the lamps had to be the same wattage, it was an urban myth that they had to be the same colour !
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