Re: Max Single Phase Load?
I was going to reply when I read this but didn't have time. I didn't realize how long it has been.
Just to follow up on the power as a 'vector' question.
Charlie mentioned the cross product and dot product of vectors, and didn't know which applied. Perhaps because neither do.
These vectors are 3-dimensional (the cross product vector is perpendicular to the other two, which needs 3 dimensions).
More properly, the current and voltage are phasors. They have a magnitude and phase angle, not really a direction like a vector. And the magnitude and angle are just a polar coordinate representation of a complex number. When you multiply them you are multiplying complex numbers, not vectors, and get another complex number. The complex power (which is actually voltage times the conjugate of the current) is a complex number. In polar form, the magniture is the total or apparent power in VA and the angle is not a phase angle but the cosine of the angle is the power factor. The complex power in rectangular form, the real part is the real power and the imaginary part is the reactive power.
I was going to reply when I read this but didn't have time. I didn't realize how long it has been.
Just to follow up on the power as a 'vector' question.
Charlie mentioned the cross product and dot product of vectors, and didn't know which applied. Perhaps because neither do.
These vectors are 3-dimensional (the cross product vector is perpendicular to the other two, which needs 3 dimensions).
More properly, the current and voltage are phasors. They have a magnitude and phase angle, not really a direction like a vector. And the magnitude and angle are just a polar coordinate representation of a complex number. When you multiply them you are multiplying complex numbers, not vectors, and get another complex number. The complex power (which is actually voltage times the conjugate of the current) is a complex number. In polar form, the magniture is the total or apparent power in VA and the angle is not a phase angle but the cosine of the angle is the power factor. The complex power in rectangular form, the real part is the real power and the imaginary part is the reactive power.