Urgent little bit of advice needed

[Coulterm]

I have a lighting circuit which consists of 4 12V LED "starlights" and 4 5Amp sockets. My electrician says the sockets will only work with 12V lamps. The people who designed the plighting plan say a regular 240V table lamp should work fine in the circuit (with the correct plug)

Circuit is connected to a dimmer switch. The starlights work and dim fine.

I have tried a 240V table lamp and it doesn't currently work at all. Is my electrician correct or is there another problem?

Please can anyone advise as I am not very confident in my electrician but seem to have hit stalemate.

 

[a1guvner]

I have a lighting circuit which consists of 4 12V LED "starlights" and 4 5Amp sockets. My electrician says the sockets will only work with 12V lamps. The people who designed the plighting plan say a regular 240V table lamp should work fine in the circuit (with the correct plug)

Circuit is connected to a dimmer switch. The starlights work and dim fine.


I have tried a 240V table lamp and it doesn't currently work at all. Is my electrician correct or is there another problem?

Please can anyone advise as I am not very confident in my electrician but seem to have hit stalemate.

Prob obvious but have you tried the lamp in another socket,

Are the 5amps and the starlights on the same switch

The circuit feeding the 5amp outlets if in fact it is 12v for some crazy reason you would only need to reconfigure the wiring to remove the transformer,

you could run into difficulty if the Starlights are fed from the end of the 5 amp circuit with the driver say by the dist board

 

[telectrix]

first find out what voltage is present at the 5A outlets. if it's 230V then the lamp should work.

 

[Coulterm]

Thanks for replying. Yes - the lamp works fine. Tried it in another 5 Amp socket. Yes the 5Amps and the starlights are on the same switch.

I'm not sure I understand what the second bit of your answer means. There is a multivolt transformer.

Here's the description from the lighting plan:

MEDIA ROOM CIRCUIT 1
Four 5 amp wall sockets for lamps. Four Mini Starlights for sparkle effect to roof lantern, set centred in
upstand and as on plan. Maximum 300 watts.


A151307
Mini Starlight 12v 20w Bright Chrome
G4 Capsule 10-20w
M47
20w Bi-Pin Capsule Lamp 12v G4 Cap
MV100
MultiVolt 100va Transformer 12v and 24v
special Wiring connections apply

 

[Coulterm]

Electrician seems to think its 12V as it is a 12V circuit. Which he installed based on the lighting plan.

 

[a1guvner]

without seeing drawings its hard to picture why the 5 amps are on with this starlight, do you know where the transformer is, would it be in the upstand,

Definative answer would be a voltage test on the 5 amp,

i would of thought they would of been two seperate circuits

 

[Coulterm]

The transformer is in the roof lantern where the starlights are. It sounds like a bad design? They are definitely 1 circuit.

Can anyone tell me what my options are as it is one 12V circuit?

I have attached the lighting plan below(I think)

View attachment Lighting plan.pdf

The circuit is C1 with the starlights in the roof lantern

 

[a1guvner]

I cant see anything on the plan to say your 5 amps on C1 to be connected to the starlights, is it a recent fault and it used to work or has it just been installed,

 

[Coulterm]

Just been installed. They are definitely same circuit (it's the top label - says C1 1m47x4)

And in the spec too:

MEDIA ROOM CIRCUIT 1
Four 5 amp wall sockets for lamps. Four Mini Starlights for sparkle effect to roof lantern, set centred in
upstand and as on plan. Maximum 300 watts.


Mini Starlight 12v 20w Bright Chrome
G4 Capsule 10-20w
M47
20w Bi-Pin Capsule Lamp 12v G4 Cap
MV100
MultiVolt 100va Transformer 12v and 24v
special Wiring connections apply.

 

[a1guvner]

The way i would wire this would be take my feed to the switch and then the load of the dimmer out to all the low level 5 amps and then a leg upto the transformer for the starlights, the electrician might of put the output of the transformer to the starlights and out to the 5 amps, if so is an easy thing to rectify

 

[Mark_Burgess]

As it has just been installed, ask the electrician to come back and go through it with you as you appear to have a problem, surely they could do that on the way home from work one day.

Any one of us would.

 

[Engineer54]

I think the electrician has wired these 5A sockets off the secondary of a 12 TX, instead of C1 supplying the TX and then going on to supply the 5A sockets. It is clearly obvious to me, that these 5A sockets should be 230V!! Pretty silly using 12Volts as a switch line too!! All wall switches in the room on a system such as shown on the drawing should be 230V, which then supply the TX's of the various lighting circuits...


That's my take on these drawings you posted anyway... I may be wrong , but i don't think so!!

 

[Coulterm]

I think the electrician has wired these 5A sockets off the secondary of a 12 TX, instead of C1 supplying the TX and then going on to supply the 5A sockets. It is clearly obvious to me, that these 5A sockets should be 230V!! Pretty silly using 12Volts as a switch line too!! All wall switches in the room on a system such as shown on the drawing should be 230V, which then supply the TX's of the various lighting circuits...


That's my take on these drawings you posted anyway... I may be wrong , but i don't think so!!

Thanks for your input. I am completely ignorant when it comes to electrics so please excuse me asking for clarification. I went to see another electrician with the plans today and he said (in my words) that my electrician appeared to have connected the transformer to the mains supply and then taken both the 5Amps and the starlights from the "other side" of the transformer - ie where the supply was now 12V. he said the 5Amps should have been connected BEFORE the transformer, then the starlights on the other side.

Is this the same as you are saying? I want to have some solid ammunition to go back to my builder with to say - get the electrician to sort this out, he has made a mistake.

Thanks so much for your help

 

[Engineer54]

Yep, that's basically what i'm saying... He's connected the 5A sockets to the secondary side of the TX's (Transformers) C1 should should come from the switch at 230V to either loop feed the TX(s) first, then go onto to feed the sockets, or feed the sockets first, then go on to feed the TX(s)

Only the star-lights things should have been connected to the secondary side of these TX'(s) that is the only load on this circuit that is 12V,

Get him back to reconfigure this C1 circuit. lol!!

 

[Specialist]

Basically yes, they're both saying the same thing. If the Sockets are wired into the 12v side of the Circuit then your Electrician has made a minor mistake & hopefully it should'nt be too much of a problem to rectify.