← Full guide: Solar Earthing and Surge Protection (Safety Checklist)

Questions to ask the installer instead of guessing a resistance number

For “Questions to ask the installer instead of guessing a resistance number”, which earthing arrangement did you design for this site, and why?.

Start here

For “Questions to ask the installer instead of guessing a resistance number”, which earthing arrangement did you design for this site, and why?.

What applies to this exact problem

  • Which earthing arrangement did you design for this site, and why?
  • How does the inverter manufacturer require protective earthing to be connected?
  • What surge-protection devices are installed on the DC and AC sides, and what design basis was used?
  • Does the building have an existing lightning-protection system, and was coordination reviewed?
  • What commissioning tests were performed, and can I have the signed results?
  • What inspection interval does the manufacturer or installer recommend for this exact system?

Check these first

  • Which earthing arrangement did you design for this site, and why?.
  • How does the inverter manufacturer require protective earthing to be connected?.
  • What surge-protection devices are installed on the DC and AC sides, and what design basis was used?.

Fix it in this order

  1. Which earthing arrangement did you design for this site, and why?.
  2. How does the inverter manufacturer require protective earthing to be connected?.
  3. What surge-protection devices are installed on the DC and AC sides, and what design basis was used?.
  4. Does the building have an existing lightning-protection system, and was coordination reviewed?.
  5. What commissioning tests were performed, and can I have the signed results?.
  6. What inspection interval does the manufacturer or installer recommend for this exact system?.

Evidence to keep

  • Signed quote and scope — keep it with the evidence for “Questions to ask the installer instead of guessing a resistance number”.
  • Module/inverter serials and warranty — keep it with the evidence for “Questions to ask the installer instead of guessing a resistance number”.
  • DISCOM/portal application IDs — keep it with the evidence for “Questions to ask the installer instead of guessing a resistance number”.
  • Generation data, photos, and installer tickets — keep it with the evidence for “Questions to ask the installer instead of guessing a resistance number”.

Do not make it harder

  • Paying the final amount before checking agreed milestones For “Questions to ask the installer instead of guessing a resistance number”, that can hide whether the underlying issue is actually resolved.
  • Assuming low generation is automatically a bad panel For “Questions to ask the installer instead of guessing a resistance number”, that can hide whether the underlying issue is actually resolved.
  • Treating installer completion as DISCOM/subsidy completion For “Questions to ask the installer instead of guessing a resistance number”, that can hide whether the underlying issue is actually resolved.

How you know it is fixed

  • The official record and your real-world result agree for “Questions to ask the installer instead of guessing a resistance number”.
  • You have enough written evidence to prove the issue is finished if it returns later for “Questions to ask the installer instead of guessing a resistance number”.

If this still isn't resolved

  1. Installer/vendor grievance State the unresolved issue explicitly: “Questions to ask the installer instead of guessing a resistance number”.
  2. DISCOM/portal grievance route State the unresolved issue explicitly: “Questions to ask the installer instead of guessing a resistance number”.
  3. Consumer forum or other official remedy where appropriate State the unresolved issue explicitly: “Questions to ask the installer instead of guessing a resistance number”.

Parent-guide references

These references support the parent guide and escalation context. Verify provider-, model-, policy-, or jurisdiction-specific details before an irreversible step.

Need the complete context?

This page solves one branch. The parent guide covers the full decision, edge cases, alternatives, and related checks.

Open the full guide