In my experience (northeast USA) most HIGH PRESSURE SODIUM street lights are 150 watt or 250 watt
For example in NYC 250 watts is used at intersections and 150 watt everywhere else
High pressure sodium lamps take a while to fully light up, however they are very energy efficient and save the council money.
it would depend on the calculatorthe Casio basic scientific calculator uses 1.5 volts of electricity
No.
in kw we use
It is dependent on the wattage rating of the heater. The higher the wattage, more electricity is consumed. Watts = Amps x Volts.