Grid tie inverter SPD installation

[SolarJedi]

I would like to start installing SPD's on grid tie only inverters.  My question is will one SPD protect the inverter, or is one per side (AC/DC) needed?  If one is adequate, DC or AC?

Thanks

[niel]

you better put one on both sides and that's my recommendation, but if you were to go with only one it would be on the ac side.

[Halfcrazy]

I agree with Niel 100% I would use 2 but if only one is in the budget the AC side is the most vulnerable

Ryan

[Robin]

Two SPD's are less than 1% of the system cost. If you only put one in, you will probably only blow up half of the inverter.
Lightning is very unforgiving.