12v transformer loading

by **2yellows** » Sun Jan 06, 2013 3:22 pm

I recently had a 12v transformer die due to hungry mices -
mices have now left the building and I want to replace the transformer but
I see it has 3 x spot lights running from it. Is this correct or should I have
a transformer for each spot light?

Cheers
2yellows

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by **ericmark** » Mon Jan 07, 2013 12:07 am

The transformer will have a VA ratting as long as the total of all three lamps watts does not exceed the VA on the transformer then no problem.

Transformers are not used much any more the switched mode power supply has replaced them. With a power supply there will be both a min and a max rating. The min must be lower than a single lamp and the max higher than all three lamps.

Note as far as you need to know VA and Watts are the same thing.

by **2yellows** » Mon Jan 07, 2013 8:11 pm

Thanks eric, best check the wiring for the other spots in the kitchen.

Cheers
2yellows