Paul Kallus posted:Anyway, the little transformer has a variable DC output - 0-18 VDC and a constant 19 VAC terminal (that I wouldn't use), and says maximum output is 5.5 VA which I recall is the same as 5.5 watts. I think the Menards buildings draw very little amps, as the adaptors are either 1000 mamps or 2000 mamps, so even at 10 buildings and assuming 2000 mamps per building that's only 0.02 mamps x say 5 VDC ~ 0.1 VA or 0.1 watt, does that sound right? If so, then that little transformer could be used to power all my buildings at a safe load and at a comfortable light level for the visual effect.
I believe your thinking derailed Paul.
If we used your example of each building drawing 2000mamps (which really same as 2 amps) each, then you would have needed a 20 amp supply!
If we use the transformer 5.5VA rating (which it isn't equivalent to watts, but will assume value for argument sake) and adapters rated 4.5V, then you could safely draw about 1.2 Amps or 1200 mA from transformer without harm. So 10 buildings could draw 120 mA each, or any current combinations until reaching 1200 mA maximum. You would need to measure each building current especially if it uses a Miller Engineering style electrolumenescent sign (their inverter power supply draws significant current I found).
Hope this helps.
