Page 304 - Introduction to Marine Engineering

278 Electrical equipment

working in a hot, humid atmosphere since this leads to wetness from
body perspiration. Fatal shocks have occurred at as low as 60V and all
circuits must be considered dangerous.
All electrical equipment should be isolated before any work is done on
it. The circuit should then be tested to ensure that it is dead. Working
near to live equipment should be avoided if at all possible. Tools with
insulated handles should be used to minimise risks.
The treatment of anyone suffering from severe electric shock must be
rapid if it is to be effective. First they must be removed from contact with
the circuit by isolating it or using a non-conducting material to drag
them away. Electric shock results in a stopping of the heart and every
effort must be made to get it going again. Apply any accepted means of
artificial respiration to bring about revival.