Move by the plight of people who had sustained great loss because of fire caused by electricity faults, Dr. Chawal Sotetiwanwongse spent 3 years in intense research and development to perfect an automatic circuit breaker so sensitive thai it interrupts the electric current even when there's a minute leak, too small to harm anybody. He named his invention Safe-T-Cut, and in 30 years since it was first manufactured in 1975, the name has become synonymous with the safe use of electricity, not only in households, but in workplaces all over the country.      The first Safe-T-Cut circuit breakers were manufactrued by a few workmen in a small plant in bangkok. But the rapid growth that today sees theproduct on the list of standard safety equipments in all newly built homes dictates its expansion.    Next