Now that we all understand the difference between lightning and surge protection, what are your thoughts on where surge protection should be installed.
1/ The main DB, at the main switch (non-essential supply) ?
2/ The Sub DB, at the main switch, after the neutral earth bond (essential supply or inverter output) ?
3/ The DC combiner box for the panel cables ?
The reason for the questions, if the building has solar panels and the panels are earthed, bonded and have an earth spike, are class II surge arrestors the correct units?
Do you need surge protection after the inverter or only in the main DB?
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