Convert Amps to watts for my caravan?
when camping with my caravan (travel trailer) in Europe, I have a small amount of electricity provided, usually 5 or ten amps. How do I calculate how many watts I can use before "blowing" the trip.
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- Standard Ohm & Watts laws. Resistance = Voltage / current R = E / I voltage = current X resistance E= I X R current = Voltage / resistance I = E / R If D.C. Watts = Current X Voltage P = I X E Watts = Current ^2 X Resistance P = I^2 X R If A.C. roughly without getting too technical: Watts = Current X Voltage X Cos [Phase Angle] Watts = Current ^2 X Voltage X Cos[Phase Angle] Or roughly: Volt Amps {VA} = Impedance X Voltage Volt Amps {VA} = Impedance ^2 X Voltage where impedance [ Z ] = square root { R^2 + (Xl - Xc)^2} where Xl = inductive reactance where Xc= capacitive reactance Note upper case letter donate D.C. and lower case donates A.C.
- About 250 watts per amp.
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