How Often Should a Commercial Switchboard Be Thermally Imaged?

Switchboard thermal imaging frequency explained: the recommended annual baseline, when to scan more often, what a scan finds and why it must be done under load.
When Does a Commercial Main Switchboard Need Upgrading?

The seven clearest switchboard upgrade signs, from overheating and nuisance tripping to asbestos and lack of capacity, and what to do when you spot them.