7 Inverter Installation Mistakes We Fix Every Week (and How to Avoid Them)

A surprising number of our service calls trace back to how the system was installed in the first place. Here are the mistakes we see most often — worth checking even if your setup 'works'.

1. Battery on a damp or hot floor

A battery sitting on a cold damp floor or in direct heat ages faster and can be unsafe. It belongs on a ventilated trolley, raised and in the open air.

2. Thin or loose battery cables

This is the one we see most. Thin or long cables waste power as heat between the battery and inverter, so you get less backup than you paid for. Short, thick, tight cables make a real difference.

3. Wrong battery size for the inverter

A battery that doesn't match the inverter's charging current either never fills properly or wears out early. The inverter and battery have to be paired correctly.

4. No stabilizer where the voltage is bad

In areas with deep voltage swings, skipping protection shortens the life of everything downstream. The right stabilizer is cheap insurance.

5. Poor earthing

Bad or missing earthing is a safety risk and can cause nuisance faults. It's not optional.

6. Inverter boxed into a hot, closed cabinet

Inverters need airflow. Sealed into a hot cupboard, they overheat and trip — and the heat ages the electronics.

7. Skipping the load check

If nobody checked what you'd actually run, the system is either overloaded (constant tripping) or oversized (wasted money). A quick load check at install avoids both.

What a proper install looks like

Our install includes a load check and correct sizing, thick well-terminated cables, a ventilated battery on a trolley, proper earthing, a stabilizer where the supply needs it, and a final test under load — plus removal of your old unit on exchange.