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rcd testing

Discuss rcd testing in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

Okay get the idea of testing at different degrees but why 0 and 180? Why not 90 and 270 as they are the peak voltages. 0 and 180 the voltage is 0 on the curve?
 
Ah, you're confusing them with sine waves, easy mistake.

All AC waveforms used for power are set to be cosine waves at the point of generation.

big wink smiley

Also: holy thread resurrection, Batman!
 

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