Blowout for each span is displayed in the planview of a profile. This does not take into account the crossarm width, it is effectively the blowout distance from the insulators.

In version 6 you need to export the profile to a DXF (planview option). In version 7 the blowout is displayed when you put the mouse over the circuits in the planview on the screen.

Blowout temperature and wind pressure are set in Options.