Dimmer switch question

[Possom]

I have a single on/off one-way switch at the bedroom door. This activates the central pendant light which is the only light in the room.

Consider one dimmer switch placed above the bed headboard connected to this same pendant. The dimmer switch can also switch on/off.

With both the main light switch 'on' and the dimmer 'on', if the dimmer is switched 'off' then the pendant light will switch off.

With the dimmer still switched 'off' and the main switch still in the 'on' position, would the pendant light switch on if the main switch is thrown into the 'off' position? If not, what would have to be done to achieve this outcome? Would the main switch have to be two-way?

Is anything else required?

Thanks.

 

[EFLImpudence]

Going on what you have actually said -

I have a single on/off one-way switch at the bedroom door. This activates the central pendant light which is the only light in the room.
Consider one dimmer switch placed above the bed headboard connected to this same pendant. The dimmer switch can also switch on/off.

Ok.

With both the main light switch 'on' and the dimmer 'on', if the dimmer is switched 'off' then the pendant light will switch off.

No, the dimmer will have no effect.

With the dimmer still switched 'off' and the main switch still in the 'on' position, would the pendant light switch on if the main switch is thrown into the 'off' position?

No, the light will still be on - so will be switched off.

If not, what would have to be done to achieve this outcome? Would the main switch have to be two-way?

Yes, and you will require a three-core and earth cable from the existing switch to the new switch.
Plus, of course, a suitable dimmer for two-way operation.

 

[Possom]

Yes, and you will require a three-core and earth cable from the existing switch to the new switch.

Thanks EFLImpudence.

I'd get an electrician to install it, just to know what type of switch(es) to purchase.

So essentially the main one-way switch needs to be replaced with a two-way switch and the on/off dimmer switch needs to be a two-way dimmer switch.

 

[markyd1]

Yes correct

 

[EFLImpudence]

Yes.

You may like to get TWO two-way dimmers - or it might be that the dimmer is on really dim when you switch it off, then get up in daylight, then when you switch on the 'normal' switch at the door the next night, it only comes on at the same really dim setting.
Then you have to go to the bed switch to turn up the brightness.

 

[winston1]

Yes.

You may like to get TWO two-way dimmers - or it might be that the dimmer is on really dim when you switch it off, then get up in daylight, then when you switch on the 'normal' switch at the door the next night, it only comes on at the same really dim setting.
Then you have to go to the bed switch to turn up the brightness.

That won't work, you can't have two two way dimmers. You would need a master/slave arrangement.

But lets face it is it really a chore to walkover to the bed to turn it up?

 

[EFLImpudence]

That won't work, you can't have two two way dimmers. You would need a master/slave arrangement.

Yes, but aren't they the same these days?

But lets face it is it really a chore to walkover to the bed to turn it up?

Well, it does seem to defeat the objective.
May as well just have the dimmer at the bed and no door switch.

 

[Taylortwocities]

Yes, but aren't they the same these days?

Not necessarily. Most of them aren’t.