Quote:
Originally Posted by Ormston
Probably stating the obvious here but check your mains voltage at the time of day you expect maximum solar output.
Add this to the maximum voltage drop you calculated and check it,s well under the maximum voltage output of the intended inverters.
If it,s close use bigger cables to reduce the voltage drop, the last thing you want is to have the inverters constantly shutting down due to over voltage.
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At 240v and you size according to code (NEC in the US) for safety and voltage drop for the given current level, it should be fine.
ANSI standards allow +/- 5% steady state voltage at the service entry, so a non-sucky inverter shouldn't have any problem pushing the power into steady state of 228 to 252v.