Very Old (Immersion Heater?) Switch
Good Evening Everybody
Just thought you all might be interested in a few photos of an old switch (I was told a fair few years ago Immersion Heater switch, this makes sense, since the top knockout is rectangular, possibly for the fixed supply cable and the bottom knockout is more round, for the heat resistant flex to the Immersion).
Picture 'Old Switch': Switch is rotary operated and has two On and two Off positions and will turn either clockwise or anti-clockwise.
Picture 'Back of Old Switch': Manufactured by 'NEW DAY' 20 Amps 250v.
No provision for earthing (although was quite possibly manufactured at a time when Earthing was provided via the mains metallic water pipe, and additionally, in the case of an Immersion Heater, the metal pipework.
Continuity across two top terminals and two bottom terminals when in on position.
No FEED and LOAD markings, however looking inside at links from terminals to lamp, in order for the lamp to be connected to the LOAD side, the wiring, looking at the back of the switch would be:
FEED - Live: Top Left Neutral: Bottom Right
LOAD - Live: Top Right Neutral: Bottom Left
Picture 'Inside Old Switch' (Front Cover Removed): Links to supply lamp. If FEED and LOAD are reversed, lamp will still be 'Live' when switched off.
Picture 'Lamp from Old Switch': Lamp (Gas Filled) Bayonet type easily replaceable.
250-260v 0.5w GEC LTD OSRAM MADE IN ENGLAND.
Picture 'Old Switch in Use': Connected to 2 core flex and 13 Amp (3 Amp Fused) plug.
Lamp glowing orange.
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