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Looping lighting feeds at switches

Baldyhugh

Hi

I have seen different methods of doing this. The neutrals are joined in a connector block in the switch box and the same for the earths. However one some occasions I have seen the live feeds into the switch and the live feed out to the next switch looped at the switch terminals. On other occasions I have seen the aforementioned live feeds joined in a connector block in the switch box and a single wire from this to the switch terminal. Both have the same outcome but the latter is unnecessary and adds another connector block to an already crowded switch box. The switch terminals are usually 10a rated anyway so joining at the switch terminals should be ok in my opinion. What is your method of choice?

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    Even more complex and perhaps perplexing is when the two light switches are connected to different phases of a 127/220 volt system. There are then 3 possible outcomes.

    Both sides of lamp connected to neutral=darkness.

    One side of lamp to phase, other side to neutral=dimness, 127 volts on a presumably 220 volt lamp.

    Each side of lamp connected to DIFFERENT phases=brightness.

    Then update the supply into the building to 3 phase 4 wire at 220/380 volts.

    The three options are now darkness, brightness, and excessive brightness and very short lamp life.

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  • 0

    Even more complex and perhaps perplexing is when the two light switches are connected to different phases of a 127/220 volt system. There are then 3 possible outcomes.

    Both sides of lamp connected to neutral=darkness.

    One side of lamp to phase, other side to neutral=dimness, 127 volts on a presumably 220 volt lamp.

    Each side of lamp connected to DIFFERENT phases=brightness.

    Then update the supply into the building to 3 phase 4 wire at 220/380 volts.

    The three options are now darkness, brightness, and excessive brightness and very short lamp life.

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