Converting 12V Halogen fixture to 230V LED fixture

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I recently bought a 12V Halogen light fixture that takes upto 5 20W G4 lamps. Inside this fixture is an electronic transformer that supplies 12V AC current to 35W-105W load.

Looking for LED bulbs, I see most of the 12V AC LED G4s are 3-5W, which combined together wouldn't exceed the minimum 35W requirement fo the transformer. While looking for LEDs I came across 230V 5W LED G4s and was wondering whether I can bypass the trasformer and connect the G4 lamp holders directly to mains. I don't know whether the thin wires that come out of the G4 lamp holders to the transformer would handle 230V but from my understanding of Electricity I think it should according to the workings below:

The G4 lamp holder wires are capable of carrying 1.66Amps (20W/12V) - 20W Halogen G4
At 230V the same wires would be carrying 0.022Amps (5W/230V) - 5W LED G4

As it is the Amperage and not Voltage that decides the wire gauge, can I safely assume that this wire can be directly connected to the mains? Or am I missing something in my calculation above?
 
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What you don't know is the insulation rating of the conductors that connect the lampholders to the transformer. It might be suitable for 230V, or it might not.
 
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That depends if the insulation can withstand the 230V or not. If not, it'll short to the body of the light fitting, or across the live and neutral.
 
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240V G4 LED lamps do exist, as do 240V G4 lampholders. This would be a case of swapping out the tranies and replacing the lampholders. That is if the lampholders can be swapped out?
 
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Do you think I'd be better off swapping the transformer to 0-30W 12V DC led driver? Would the current wires support it because they are 12V AC rated.
 
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