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Hi,
thank you K1W1 for your prompt reply.
Concerning the discussion about tension, I can tell you that in Italy, as K1W1 says, we have 230V single phase and 400V 3-phase.
The contract range, for single-phase, is 230V +/- 10% (207V-253V).
I suppose is due to the normal distribution schema: from a 3-phase they take 1 phase and neutral and they goes, so, in order to cover the maximum extension, they raise a little the voltage at the beginning to compensate the normal tension losses depending on the wire length.
Bye
MM
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