B
baldsparkies
Have listened to this one banded around many times.
Situation where some sparks argue that ground or 1st floor circuits should not be present at one switch as is often the case if a strapper drops down to the hallway 2 way feeding the landing with the hallway switch also within the same (double gang switch)
I can't recall any regulation saying its a problem.
The practice is common in commercial installs where a multi gang grid is feeding a number of light circuits, although if more than 1 phase is present this should be labelled accordingly at or near the switch, (however in domestic this wouldn't be the case)
I argued the point that from a safety perspective if an elderly person was walking down the stairs in a domestic at home environment and only one circuit was supplying hallway and landing lights the entire staircase would be in darkness should the supplying mcb tripp.
At least with 2 circuits either top or bottom illumination would still be present.
And on a safety note to say its dangerous because someone could remove the switch isolating one circuit and not being aware a 2nd circuit was present !!
In response I would say they have not followed safe isolation procedures, and are thus not competent to be working on the switch anyway.
Well, that was my opinion on the situation but be interesting to know what others think.
Situation where some sparks argue that ground or 1st floor circuits should not be present at one switch as is often the case if a strapper drops down to the hallway 2 way feeding the landing with the hallway switch also within the same (double gang switch)
I can't recall any regulation saying its a problem.
The practice is common in commercial installs where a multi gang grid is feeding a number of light circuits, although if more than 1 phase is present this should be labelled accordingly at or near the switch, (however in domestic this wouldn't be the case)
I argued the point that from a safety perspective if an elderly person was walking down the stairs in a domestic at home environment and only one circuit was supplying hallway and landing lights the entire staircase would be in darkness should the supplying mcb tripp.
At least with 2 circuits either top or bottom illumination would still be present.
And on a safety note to say its dangerous because someone could remove the switch isolating one circuit and not being aware a 2nd circuit was present !!
In response I would say they have not followed safe isolation procedures, and are thus not competent to be working on the switch anyway.
Well, that was my opinion on the situation but be interesting to know what others think.
