A rooftop array is a live DC generator that cannot be switched off at source — it produces voltage whenever light falls on it, regardless of whether anything is connected. That single fact shapes every safety consideration that follows, and it is why some checks belong to owners and others firmly do not.
What maintenance actually involves
Safety on a solar installation rests on four things: proper earthing so fault current has a defined path, working isolation so the system can be shut down safely, surge and overcurrent protection sized correctly, and cabling that is UV-rated and routed where it will not chafe. All four are set at installation, and all four degrade slowly enough that nothing announces when one has stopped doing its job.
The engineering view
Earthing is the element most often found deficient during inspection, and it is invisible without testing. Surge protection devices are consumable — they absorb events until they are spent, and a spent device usually looks identical to a working one. DC isolators are exposed to weather and are a known failure point. None of these can be assessed by looking at them, which is precisely why an annual technician check exists and why cleaning is not a substitute for one.
Local operating conditions
Karnataka's lightning activity during the pre-monsoon and monsoon periods makes surge protection genuinely important rather than a formality, and it means those devices should be verified rather than assumed. Monsoon humidity also tends to expose marginal insulation and poorly sealed cable entries, so the period after the monsoon is a sensible time for the annual check.
Common mistakes to avoid
Safety problems build quietly through these habits:
- Assuming the array is dead because the inverter is switched off
- Never testing earthing after commissioning
- Treating surge protection as permanent rather than consumable
- Leaving DC cable exposed where it can chafe against a roof edge or structure
- Attempting DC-side work without training, tools, or isolation
What we recommend
Restrict yourself to visual checks — cable condition, enclosure integrity, obvious damage or discolouration — and have earthing, protection devices, and connection torque verified annually by a qualified technician. If you find heat, discolouration, or any smell of burning near an enclosure, isolate the AC side and call someone rather than investigating.
Common questions
- Is the array dangerous even when the system is off?
- Yes. Modules generate voltage whenever light falls on them. Switching off the inverter does not make the DC side safe, which is why DC work needs a trained technician.
- How do I know if my earthing is adequate?
- It cannot be judged visually and needs testing with proper instruments. This is a standard part of an annual inspection.
- Do surge protection devices need replacing?
- They can, since they degrade as they absorb events. A spent device typically looks unchanged, so it needs checking rather than inspecting.
- What should I do if I smell burning near the inverter?
- Isolate the AC side if you can do so safely, stay clear, and call a technician immediately. Do not open enclosures.
- Is solar a fire risk?
- A properly installed and maintained system is low risk. The risks that do exist come mostly from loose DC connections and poor earthing, both of which an annual check is designed to find.
Talk to our engineering team for a solar assessment.
We will review your consumption, roof, and site constraints before recommending any capacity.