Talk:Per-unit system

This is wrong, but I'm too busy to fix it now.

$I_{base}={\frac {P_{base}}{V_{base}}}=1pu$

$Z_{base}={\frac {V_{base}}{I_{base}}}=1pu$

$Y_{base}={\frac {1}{Z_{base}}}=1pu$

The example at the bottom is correct though so overall the article is fine.