A retail company and an electrical contracting company have been fined a total of just over one million pounds after an electrician suffered serious burns when he was caught in an explosion at a warehouse in Liverpool.  An HSE investigation found that the victim had been attempting to connect a generator to a low voltage supply to allow core site functions to continue to operate whilst high voltage maintenance was being undertaken. This work was complex involving several contractors and required co-ordination of different working parties with specific time limited requirements. The investigation found that there had been was insufficient planning between parties beforehand, including management responsibilities, coordination of work and exchange of relevant documentation.