Upgrading MR16 TO GU10

[atpm]

Hi all,

I have a failed transformer in a bedroom and want to convert all the bulbs in this bedroom to GU10 (4 bulbs) This is so I can use LED bulbs without hassle.

Is there any type of notification needed for this type of work? Can I just get on with it?

Thanks

 

[telectrix]

and , as an aside, the confusion over the purpose of fire rated downlights. they are fire rated not to stop them catching fire, but to preserve the fire barrier (if applicable) into which they are fitted, to prevent the spread of fire ( however caused) through the ceiling.

 

[GeorgeCooke]

Hi all,

I have a failed transformer in a bedroom and want to convert all the bulbs in this bedroom to GU10 (4 bulbs) This is so I can use LED bulbs without hassle.

Is there any type of notification needed for this type of work? Can I just get on with it?

Thanks

MR16 is the size of the multifaceted reflector in 8ths of an inch. GU10 is a type of base.

Most GU10 lamps are MR16. Your thread title is meaningless, please explain.

 

[GeorgeCooke]

Those downlights are designed for ise with selv (12v) not 240v

How can you say that? His existing lamps are MR16, i.e. multifaceted reflector 16/8ths of an inch in diameter. MR16 lamps come in 12v, 24v, 120v and 240v. MR 16 is NOT a type of base.

 

[GeorgeCooke]

There were, and still are loads of "open" downlights on the market which can be MR16 or GU10

Or both at the same time.
MR16 is the size of the lamp, not a base. GU10 is a base not a type of lamp.

 

[SparkyChick]

MR16 is the size of the multifaceted reflector in 8ths of an inch. GU10 is a type of base.

Most GU10 lamps are MR16. Your thread title is meaningless, please explain.

How can you say that? His existing lamps are MR16, i.e. multifaceted reflector 16/8ths of an inch in diameter. MR16 lamps come in 12v, 24v, 120v and 240v. MR 16 is NOT a type of base.

Or both at the same time.
MR16 is the size of the lamp, not a base. GU10 is a base not a type of lamp.

In common parlance... GU10 is commonly used to refer to a 240v reflector spotlamp... MR16 is commonly used to refer to a 12v reflector spotlamp.

You've got a lot of convincing to do since nearly every single supplier I've seen uses MR16 to refer to 12v reflectors spots and GU10 to refer to their 240v equivalent.

It's like the term ring main... you say ring final circuit to a customer and you can see their eyes glaze over, but say ring main and most of them know what you're talking about... a bit like MCB, RCD, RCBO vs Fuse. Consumer unit vs. fusebox.

If someone says to me MR16 I immediately think 12v reflector spot with push fit pin style connections... GU10, 240v reflector spot with a bayonet style twist lock connector.

 

[GeorgeCooke]

In common parlance... GU10 is commonly used to refer to a 240v reflector spotlamp... MR16 is commonly used to refer to a 12v reflector spotlamp.

You've got a lot of convincing to do since nearly every single supplier I've seen uses MR16 to refer to 12v reflectors spots and GU10 to refer to their 240v equivalent.

That does not make it right does it? We are professionals on here and should use the correct terms. The suppliers, and others, will never learn if they are not corrected.

 

[suffolkspark]

I bet your in the its a lamp not a bulb brigade

 

[Cadgey123]

That does not make it right does it? We are professionals on here and should use the correct terms. The suppliers, and others, will never learn if they are not corrected.

Let’s not try and reinvent the wheel, they are 12v MR 16 - 240v lights are GU10 and an American boxcutter is a Stanley knife deal with it ........

 

[DPG]

George, you were banging on about this before. It's not a problem - life's too short. Bet you hate it when people say they're Hoovering up!

 

[westward10]

Strictly speaking the MR is more to do with the reflector, the lamp fitting base is actually GU5.3 but they are commonly referred to MR16 which is technically incorrect

 

[GeorgeCooke]

George, you were banging on about this before.

Yet people still have not taken it on board. Using incorrect terms is confusing.

 

[DPG]

Yet people still have not taken it on board. Using incorrect terms is confusing.

I would put money on no electrician on here being confused about this.

 

[westward10]

Yet people still have not taken it on board. Using incorrect terms is confusing.

I agree with you that MR16 is the dimension of the lamp and the lamp base is GU5.3 but go into a wholesaler and ask for a GU5.3 lamp you are likely to get blank looks, say MR16 and all becomes clear.

 

[GeorgeCooke]

I agree with you that MR16 is the dimension of the lamp and the lamp base is GU5.3 but go into a wholesaler and ask for a GU5.3 lamp you are likely to get blank looks, say MR16 and all becomes clear.

Are wholesalers really that stupid that they don't know what GU5.3 is?

MR16 is not clear. MR16 lamps come in GU5.3, GU10, small ES, and small bayonet.

 

[westward10]

This is the way of things George where colloquial descriptions may not be definitive but people understand them.

 

[telectrix]

same with non-electrical terms. when i say " no donkey snot on my food", only family and friends know i mean mayonaisse.

 

[rolyberkin]

There is no guarantee that when the circuit is tested on the CU change that this will show that the earths have been snipped for an MR16/GU5.3 12v downlight! The continuity may be there at the furthest point on the circuit but the lamps in question may have no earth. Suggest this is done with someone who has test equipment and can check properly rather than guess.

 

[EbolaSideRoom]

I can’t wait to speak to Eddie’s on Monday and ask for some 240v MR16 bulbs

 

[westward10]

Mains voltage led GU5.3 lamps are actually available.

 

[atpm]

Hi everyone,

This has been sorted now.

They have been installed (New lamps) and tested by a electrcian and I now have a Minor Works Certificate for the change.

Thanks for all the advice.