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I've got a ceiling fan/light wired to a double switch (like this: https://www.homedepot.com/p/Leviton-15-Amp-Combination-Double-Switch-White-R62-05224-2WS/202027008)

The source is at the switch and it's wired like this image:

enter image description here

I can turn either switch on, but when I turn both on, the breaker trips.

In trouble shooting, I tried this on the same line, but the same thing happened (each switch worked individually, but when both were on the breaker tripped): enter image description here

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    Is the tripped breaker a GFCI/breaker combo? – Glenn Willen Oct 8 at 20:18
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    Can you please elaborate on what you've done diagnostically so far? The most obvious explanations are: the breaker is defective; or, the fan and light together, along with whatever else is on that circuit, draw more than the rating of the breaker. Are you sure neither of these things are true? If so, why? – Peter Duniho Oct 8 at 20:55
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    @GlennWillen no – Andrew Samuelsen Oct 8 at 21:31
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    "I think the problem has to be with how I am connecting the neutral" -- maybe. I don't have any specific ideas. But, for the benefit of the others who might be able to help you, I'll suggest that providing actual photos of the wiring at each end will be of more direct use than the schematic drawing. The schematic conveys your understanding of the circuit, while photos will ensure it's clear the actual state of the circuit (or at least, as clear as a photo can make it). – Peter Duniho Oct 8 at 21:54
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    Test voltage at source: 230V across live and neutral, 230V across live and PE, around 0V across neutral and PE. Also test voltages at light fixture in all the switch possible position. Also please post a picture of the actual wall box and of the ceiling box. – DDS Oct 16 at 9:45

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