Ohms law says that watts are equal to volts times amps.
240v X 13.5a = 3240 va
VA / 1000 = Kva
So, your load requires 3.24 Kva. The transformer should have a rating greater than this as a safety factor, so you would choose the next larger size, in this case probably a 5 Kva transformer with a 480v primary and a 240v secondary.
Your local electrical codes may require a larger safety factor, so you would want to consult them before buying the transformer!
240v x 13.5A = 3.24kVA, single phase transformer.
A control transformer marked 240V - 24Vac would have a control voltage of 24 volts.
Since this transformer has a ratio of 1:2 the load current on the 480V side just has to be doubled. 85 x 2 = 170A on the primary. 40.8 KVA transformer. To prove this just find the KVA of both sides and they should be equal.
240 / 12 = 20
== == If you have to ask a question like this please do not open the cover of the amplifier.
IT depends on the voltage that is at the powerlines. Ibelieve the common residential powerline voltage is 2160v and your house is 120/240v
With a transformer.
Electronic technician will convert in no time. You need 240v power transformer in place of same wattage 120V. Super easy.
A control transformer marked 240V - 24Vac would have a control voltage of 24 volts.
Use a step down transformer 240 primary to 120 secondary. You must know what the connected load (amps) is so that you don't overload the transformer. Small transformers are rated in VA.
3
If a load were only 240 volt on a single phase 240v system with a center tapped transformer the neutral conductor would carry no current.
Disregard the neutral
If they are both using the same watt globes the 240v is slightly more efficient due to small losses in the transformer.
Since this transformer has a ratio of 1:2 the load current on the 480V side just has to be doubled. 85 x 2 = 170A on the primary. 40.8 KVA transformer. To prove this just find the KVA of both sides and they should be equal.
0.583333333333
No
It would be better if you got a transformer and stepped up the voltage.