article_snippet.sent: Nathan Brown, 19, was working with An apprentice electrician father David, an experienced electrician, when An apprentice electrician apparently touched a set of exposed electrical bars powering a crane.
article_snippet.sent: But Apprentice electrician Nathan Brown accidentally touched a 400-volt busbar, a metal strip which conducts electricity within a switchboard, while Apprentice electrician Nathan Brown was trying to climb high enough to carry out the tests.
article_snippet.sent: Forensic pathologist Philip Lumb told The inquest in Oldham Forensic pathologist Philip Lumb found burn marks consistent with electrocution on Apprentice electrician Nathan Brown's arm.
article_snippet.sent: Mr Brown said Mr Brown decided to put a ladder over the toilet block beneath a 10-tonne travelling crane and had not seen the busbar overhead.
article_snippet.sent: Mr Brown told the inquest: 'As far as I am aware the busbar should have been marked up in a sleeve with the marking "danger high voltage".
highlights_snippet.sent: Nathan Brown climbed up on a crane but accidentally touched exposed power supply .
  
highlights_snippet.sent: Inquest hears that the power supply was not clearly marked as dangerous .