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What are the differences between a three phase electrical panel and a single phase?
My electrician is telling me that I need a new three phase panel to replace a single phase panel, but I have my doubts. What are the basic differences? I suspect that my "single" phase panel can supply three phase as it appears that a three phase HVAC unit is currently supplied by this panel.
What makes you think that your "single" phase board can supply 3 phase? Where are you? Different rules apply for different countries.
If you are in Australia, the UK or some parts of Europe, you should see (quite clearly) 3 different coloured cables supplying the main distribution board if it is 3 phase. In Australia, the colours are red (A phase), white (B phase) & blue (C phase). The neutral conductor will be black. If you have the misfortune to be in the USA, you may only see a multitude of white cables with a red (maybe) & perhaps a black or 2. If you are in the USA, I'd get an electrician.
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