Cable guy testing current 'like a bird on a wire'

Helicopters Otago pilot Brendan Wilson (left) and Electrix transmission line mechanic Mike...
Helicopters Otago pilot Brendan Wilson (left) and Electrix transmission line mechanic Mike Fitzsimmons (with Ohmstik in hand) prepare to check some of Dunedin's high-voltage power cables.
Hanging on to a live 220,000 volt power cable while dangling from a helicopter about 40m from the ground, sounds like it could literally make your hair stand on end.

But even if Mike Fitzsimmons had hair, he says the job is far from hair-raising.

The Dunedin-based Electrix transmission line mechanic has spent the past two days hanging from a Helicopters Otago chopper checking Dunedin's high-voltage cables.

It is the first time in the 24-year-old's seven-year career that he has done the job, and despite only having about five hours' experience, he was beginning to sound like a seasoned professional yesterday.

"It's just like a non-stop bungy jump," he said.

Thanks to a special Faraday suit, he is able to grab on to the high-voltage cables without being electrocuted.

Mr  Fitzsimmons tests  a high-voltage power cable in South Dunedin. Photos by Stephen Jaquiery.
Mr Fitzsimmons tests a high-voltage power cable in South Dunedin. Photos by Stephen Jaquiery.
The cotton suit has metal fibres woven into it, which makes the electricity run around him rather than through him.

"It keeps me at the same potential as a conductor. I'm like a bird on a wire."

His job is to test the current and resistance of the conductor and joints using an Ohmstik, and relay the data to a colleague in the helicopter above.

He said the only slightly un-nerving part of the procedure was grabbing hold of the live cable to get in a position to use the Ohmstik.

"Little blue arcs come out to meet me when I reach for the cable.

"Apart from that, you feel nothing.

"I'm not fazed by it - I'm used to working around electricity.

"You can literally grab the line with two hands and kiss it."

Mr Fitzsimmons said communication between himself and helicopter pilot Brendan Wilson was paramount, to manoeuvre safely.

Unfortunately, a facetious power struggle has developed between the two, with Mr Wilson threatening to turn Mr Fitzsimmons into a "human tea bag" and dunk him in the harbour if he does not buy lunch.

"It's been a fun job," Mr Wilson said.

The team will continue the testing next week, before moving to lines in Invercargill and Christchurch.

- john.lewis@odt.co.nz

 

 

Add a Comment

 

Advertisement