Would it be possible to use a changeover switch in this example?

[HappyHippyDad]

I am having a play in my shed .

It has a 12v supply fed from a solar panel

I have 3 gang light switch which switches the following

1. 4 x 7w LED MR16 downlights.
2. 1 x 12v LED striplight (12w)(the tapelight thingy that just sticks on)
3. 1 x 20W 12v floodlight

I basically want to have a 230V backup light in there in case the battery packs up. The shed has a 230V supply to it and I originally thought I would just add a new 230V light to use when needed. However, and this is my question, would a single LED driver be ok to power all the above? If so, which one would I need with regards max wattage and constant voltage/current?

Below is a drawing of what I want.. cheers
(ps.. the drawing should say '4' x LED MR16's)

 

[Silly Sausage]

No they don't. MR16 means multifaceted reflector 16 eights of an inch diameter. Nothing else. MR16 are available in 12v. 24, 120v, or 240v and with various types of base.

Well I never! Always thought it was the pin configuration.
What about GU10s?

 

[telectrix]

As soon as I saw that you'd replied I thought that's what you would be writing about .

Where's the fun in that Tel? Would it be cheaper.... yes! Would it be easier to install..... yes! Would it be less likely to break down.... yes!

Actually, I've decided that you're right. No change over switch, no DC power supply, just a standard, cheap switch start batten that I've got left over from a job!

I have however just put a changeover switch in for my sockets... very exciting for a purely Domestic installer to mess around with something different. Bear in mind this is 'my' shed not a customers, hence not as neat!
View attachment 45355 View attachment 45356

as the old adage goes...... K.I.S.S. ........ keep it simple ******.

 

[telectrix]

No they don't. MR16 means multifaceted reflector 16 eights of an inch diameter. Nothing else. MR16 are available in 12v. 24, 120v, or 240v and with various types of base.

Pedant. .

 

[GeorgeCooke]

Well I never! Always thought it was the pin configuration.
What about GU10s?

GU10 is a type of base. Two pins as often used on 12v lamps are GU5.3, another type of base.

 

[GeorgeCooke]

Pedant. .

How is using the correct terms pedantry?

 

[chrisdungan]

Really??
Why??
Play all you like I guess but surely you have other things in your life?
The concept is ok but seems like an over complicated solution to a problem that doesn't really exist.
In my book it's best to keep to the K.I.S.S. theory