Future-proof for PV installation on out building

[citylife]

Working on a barn conversion where meter/supply are in a separate building. Will be burying a cable (45m) this week to supply barn.
There may be a requirement for solar panels to be fitted in the future - is there any need to bury an additional cable back to meter/supply for panels or can everything be metered/powered locally?

 

[Gavin A]

can be metered locally, but pv works to 1% volt drop along the cable, so best to get an idea of what's likely to be fitted (given the new tariffs probably 30 or 50kW max if 3 phase unless it's a huge barn), then do the cable calcs for that to get something like 1% volt drop to save the cost of another cable being run in in future.

 

[citylife]

Okay thanks

 

[Deleted member 26818]

With 3 phase PV, is a neutral required?

 

[BruceB]

All the [small] 3 phase inverters I have seen have a neutral connection (which I appreciate is the answer to a slightly different question).