Ground Fault Interrupter
Ground fault interrupters are designed to protect from electrical shock by interrupting a household circuit when there is a difference in the currents in the"hot" and neutral wires. Such a difference indicates that an abnormal diversion of current from the "hot" wire is occuring. Such a current might be flowing in the ground wire, such as a leakage current from a motor or from capacitors. More importantly, that current diversion may be occuring because a person has come into contact with the "hot" wire and is being shocked. When a circuit is functioning normally, all the return current from an appliance flows through the neutral wire, so the presence of a difference between "hot" and neutral currents represents a malfunction which in some circumstances could produce a dangerous or even lethal shock hazard.
GFI's are required by the electrical code for receptacles in bathrooms, some kitchen receptacles, some outside receptacles, and receptacles near swimming pools. The horror story scenarios which led to these code requirements are things like dropping a hair dryer or a portable radio into a bathtub with a person, causing electrocution. A typical circuit breaker interrupts the ciruit at 20 amperes, but it takes only about 100 milliamperes to electrocute a person in such a scenario. The GFI is designed to detect currents of a few milliamperes and trip a breaker at the receptacle or at the breaker panel to remove the shock hazard. The GFI has a "Test" button which causes a small difference between "hot" and neutral currents to test the device. In an example given by John de Armond, the test button put the 120 volt supply across a 14.75 K resistor, producing a current of 8.2 mA. The UL requirement for a GFI is that it trip when there is 5 mA of leakage current. There is also a reset button to use after it has been tripped. for your philippine electrical concerns...needs...installation...orders...safeelectrical2013@gmail.com METRO MANILA PHILIPPINES WIRE AND CABLE SUPPLIER IN METRO MANILA WIRE AND CABLE SUPPLIER IN QUEZON CITY WIRE AND CABLE SUPPLIER IN LUZON WIRE AND CABLE SUPPLIER IN VISAYA WIRE AND CABLE SUPPLIER IN SUBIC WIRE AND CABLE SUPPLIER IN CLARK WIRE AND CABLE SUPPLIER IN THE PHILIPPINES WIRE AND CABLE SUPPLIER IN THE PHILIPPINES ELECTRICAL SUPPLIER IN METRO MANILA ELECTRICAL SUPPLIER IN QUEZON CITY ELECTRICAL SUPPLIER IN LUZON ELECTRICAL SUPPLIER IN VISAYA ELECTRICAL SUPPLIER IN SUBIC ELECTRICAL SUPPLIER IN CLARK ELECTRICAL SUPPLIER IN PHILIPPINE INDUSTRIAL PARK ELECTRICAL SUPPLIER IN PHILIPPINE ECONOMIC ZONE ELECTRICAL SUPPLIER FOR PHILIPPINE FOREIGNERS ELECTRICAL SUPPLIER FOR PHILIPPINE PROVINCES FOR YOUR PHILIPPINE ELECTRICAL CONCERNS...NEEDS...INSTALLATION...QUOTATION...ORDERS KINDLY EMAIL US: SAFEELECTRICAL2013@GMAIL.COM SAFEELECTRICALONLINE@GMAIL.COM FOR YOUR PHILIPPINE ELECTRICAL CONCERNS...NEEDS...INSTALLATION...QUOTATION...ORDERS: KINDLY EMAIL US: SAFEELECTRICAL2013@GMAIL.COM SAFEELECTRICALONLINE@GMAIL.COM FOR PHILIPPINE INQUIRIES LIKE LIGHTNING ARRESTER SUPPLY AND INSTALLATION CONTACT US: FOR PHILIPPINE INQUIRIES LIKE LIGHTNING ARRESTER SUPPLY AND INSTALLATION CONTACT US: FOR PHILIPPINE INQUIRIES LIKE LIGHTNING ARRESTER SUPPLY AND INSTALLATION CONTACT US: MOBILE NUMBERS: SMART: +63 09079522099 +63 09214026477 GLOBE: +63 09273919600 +63 09157920129 SUN: +63 9227192434 +63 09336253505 WIRELESS LANDLINE: +63 4068727 +63 4922566 LANDLINE: +63 4317553 HURRY..CALL US...NOW!!!! THANK YOU FOR YOUR ORDERS AND INQUIRIES... LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN THE PHILIPPINES ELECTRICAL FENCE SUPPLIER AND INSTALLER IN THE PHILIPPINES LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN METRO MANILA ELECTRICAL FENCE SUPPLIER AND INSTALLER IN METRO MANILA LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN THE PHILIPPINE ECONOMIC ZONE ELECTRICAL FENCE SUPPLIER AND INSTALLER IN THE PHILIPPINE ECONOMIC ZONE LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN THE VISAYA REGION ELECTRICAL FENCE SUPPLIER AND INSTALLER IN THE VISAYAS REGION LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN THE MINDANAO ELECTRICAL FENCE SUPPLIER AND INSTALLER IN THE MINDANAO FOR YOUR LIGHTNING STRIKE PROTECTION...LET US HELP YOU AVOID SUCH ACCIDENTS... BEFORE IT IS TOO LATE...BEFORE IT IS TOO LATE... WHEN LIGHTNING STRIKE HIT YOU.. I GUARANTEE YOU..YOU'LL NEVER LIVE TO TELL YOUR EXPERIENCE... DON'T BE THE NEXT VICTIM...PROTECT YOURSELF..YOUR FAMILY..YOUR BUSINESS AT ALL TIMES.. INSTALL A LIGHTNING ARRESTER IN YOUR PLACE...DO IT NOW BEFORE YOUR CAUGHT UNAWARE... IF YOU HAVE LIGHTING PROTECTION INSTALLED... YOU'LL HAVE PEACE OF MIND...YOU CAN SLEEP WELL EVEN WHEN LIGHTNING STRIKES... YOU KNOW YOUR WELL PROTECTED... IN YOUR HOME, IN YOUR PLACE OF BUSINESS AND IN YOUR PROPERTIES... HURRY..CALL US...NOW!!!! THANK YOU FOR YOUR ADVANCE ORDERS AND INQUIRIES... "PHILIPPINE FOREIGNERS AND PHILIPPINE PROVINCES ELECTRICAL SUPPLIER AND SERVICE PROVIDER" "SAFE ELECTRICAL SUPPLY AND SERVICES" |
No comments:
Post a Comment