Outbuilding supply

[SUNRAY]

I'm after opinions for power to a garden outbuilding, effectively they are looking for a few watts for fairy lights as a temporary thing.

Currently there are 4 short lamp posts each side of the area, these are 24V 18W fittings and the original 50ft lengths of cable were too flimsy and the difference in colour of the bulbs was obvious and I replaced with 2.5mm tri rated several years ago, directly buried. Since then the whole area has been surfaced and digging is not an option, neither is fixing cable to the walls/fences.

How tacky to simply add a 24V transformer to the end of the run to provide something near 230V.

 

[ericmark]

Is the supply at 50 Hz? I suppose with an earth rod or to once single outlet as an IT supply it could be done, however I have found step up transformers are not so easy to find, I have seen it done many times 110 volt to 230 so not really any different.

I would say a 24 volt socket with a portable step up would be acceptable, it is clear to anyone using what they have got, but would not think a hidden step up would be acceptable as you could too easy over load the system without realising.

 

[SUNRAY]

Is the supply at 50 Hz? I suppose with an earth rod or to once single outlet as an IT supply it could be done, however I have found step up transformers are not so easy to find, I have seen it done many times 110 volt to 230 so not really any different.

I would say a 24 volt socket with a portable step up would be acceptable, it is clear to anyone using what they have got, but would not think a hidden step up would be acceptable as you could too easy over load the system without realising.

Totally understood, this is for a specific reason but it's likely to be there for the duration of the summer. Currently it's a 300VA panel transformer (what I had in the car when some idiot let the blue smoke out of the original. I have a selection here at the mo so probably a 150VA but i'll probably use a C4 MCB to limit the abuse, or D4 if needed for the inrush.
It won't be hidden away, just be a box with 24V in and a 13A socket.

 

[oldbutnotdead]

You could just use a 24v invertor (as used in LGVs throughout the world) if its a DC supply. Mine shuts down if the supply voltage gets too low so that'd solve the overload issue

 

[SUNRAY]

You could just use a 24v invertor (as used in LGVs throughout the world) if its a DC supply. Mine shuts down if the supply voltage gets too low so that'd solve the overload issue

It's a good idea. It is currently a simple transformer so AC but it would be easy enough to add rectification and smoothing.

However I have a selection of 24V transformers 'in stock'.