A transformer exploded in la Uruca Sunday night, and sent fire fighters on a search in the dark for the damaged device. Power was out to homes for about 20 minutes.
The problem might have been caused by weekend rains, and fire fighters said that short circuits are more frequent in the rainy season than in the dry season.
There are 40 percent more calls for that reason during the rainy season, they said. During wet months there are about 10 short circuit calls a day, they said, up from six during the drier months.
In 2012 there were 1,702, said the Cuerpo de Bomberos. The agency urged person with suspect electric systems to get some professional advice.
Some of the short circuits can come from trees falling on lines and pieces of metal hitting electrical installations during windy weather. Metal gutters also can interfere with the electrical system, the agency noted. And some situations can be life-threatening.