Tradesman electrocuted on Adelaide shopping centre roof

An investigation is underway after an experienced tradesman was electrocuted on the roof of an Adelaide shopping centre.

A 48-year-old Morphettville man was found unresponsive on the roof of the Aberfoyle Hub Shopping Centre at about 9.30pm yesterday, after a cleaner raised the alarm.

Paramedics were unable to revive him and he was pronounced dead.

Pharmacist Claudia Chek said she had seen the man earlier in the day when he came to her business to fix a fault with the air-conditioner, before he returned in the evening.

"(He) came in probably after midday, and the code manager wasn't here, so he said he'd go about and do his work, and I think he came back probably around 8pm-ish before we closed," she said.

The man's employer said he had worked for the company for years, and had always put safety first.

The owner of the shopping centre told 9News their "heartfelt condolences" went out to the man's family.

Safework SA investigators have visited the site and the investigation has begun.