Earth Leakage Faults
Step 1 : Switch off the main switch, earth leakage unit and all the circuit breakers, unplug everything and switch off isolators (stoves, pool, geyser, etc)
Step 2 : Switch on the earth leakage unit first then switch on the main switch, if the earth leakage trips chances are you have a neutral fault, you need to call an electrician. If the earth leakage unit stays up/on go to step 3
Step 3 : Switch on one circuit breaker at a time and wait a second or 2 as you switch them on, if the earth leakage trips as you switch on a circuit breaker, leave the circuit breaker down/off and move to the next circuit breaker, if the rest of the circuit breakers are reset without tripping the earth leakage unit then you have identified the circuit then you can start plugging appliance back in and switching on isolators, you will find some appliance don't work, you will need to get an electrician to trace the fault. If all the circuit breakers reset without tripping the earth leakage unit, then go to step 4
Step 4 : Start plugging in appliances and switch on isolators one at a time until the cable/ appliance trips the earth leakage, unplug the appliance which trips the earth leakage and leave it unplugged, you have identified the problem, you don't need to call an electrician, just replace the appliance, if you switch on the pool isolator and it trips the earth leakage you know it is the pool causing the problem. Note!!!! This is a very basic explanation of what might be causing the earth leakage unit trip and if in doubt call your local electrician. Finding an "electrician" capable of tracing faults could be just as tricky as the fault itself.
Different Earth Leakage Makes. Please identify.
The prime requirement of any rules for electrical installations is to ensure that people, animals and property are protected from hazards that can arise from the operation of an electrical installation under both normal and fault conditions.
Physiology of electric shock
Electric shock and burns are not caused by voltage, but by the passage of electric current through the body. This current depends on a number of factors, including voltage, body impedance, contact impedance and frequency. The other major factor in electric shock and burns is time, for time affects the damage caused and the probability of dangerous effects. Ventricular fibrillation is considered to be the main cause of death by electric shock. There is also some evidence of death due to asphyxia or cardiac arrest. Pathophysiological effects such as muscular contractions, difficulty in breathing, rising blood pressure, disturbances of impulses in the heart including atrial fibrillation and transient cardiac arrest may occur without ventricular fibrillation. Such effects are not lethal and are usually reversible, but current marks can occur. With currents of several amperes lasting more than seconds, deep-seated burns or other serious injuries (which can be internal) and even death are likely to occur.