A transformer is a power source.
It will provide voltage to a device.
Find the voltage rating on the device, say 24V.
250/24 = ~10A.
It would be at least 250 amps, maybe 300 amps.
300 Amps if used for service entrance conductors. Table 310.15
The maximum current output of a CT is 5 amps. Connected to a meter this will be full scale. What ever the ratio of the CT will dictate the scale face on the meter. A 500 amp CT's output will be 5 amps at 500 amps on the buss. 250 amps on the buss, the CT will output 2.5 amp or half scale on the meter face.
There are two distinct questions here. To determine the wire size to carry 15000 volts the circuits load amperage must be stated. The wire size for a 550 amp service is, an 800 MCM copper conductor with an insulation factor of 90 degrees C. This conductor is rated at 555 amps. Parallel 250 MCM will give you a total capacity of 580 amps. A triple run of 2/0 will give you a total capacity of 585 amps.
4/0 (4 ought) in copper will handle 250 amps. The voltage drop at 175 ft. is about 2.14 volts which should be okay.
kVA = 1000va Therefore 1000/220 Answer 4.54A
you get a transformer...
250 watts divided by 12 volts = amps or around 20 amps
Depends on the voltage. AMPS X VOLTS = WATTS 250 Watts at 12 V would be about 21 Amps, while 250 watts at 120 volts would be 2.1 amps.
It depends on the incoming primary voltage. For a 5kva utility transformer receiving 15,000 volts on the primary the current drawn would be one third of one amp to give you an output of 5,000 VA (watts). Just remember this, volts x amps = watts or volt amps.
About 2.25 Amps.
It would be at least 250 amps, maybe 300 amps.
300 Amps if used for service entrance conductors. Table 310.15
10 amps 250 volts or 16 amps 250 volts.
There are 1000mA in one amp. So there is 0.25 amp in 250 mA.
Lets put a value to the transformer, say 500 VA. Step down with a 5:1 ratio. Say 250 volts on primary. 250/5 = 50 volts secondary. 500 VA transformer/50 volts secondary = 10 Amps. Therefore the secondary would have to have the larger wire to accommodate the larger current.
the normal shock for human being is 250-300mA.