Electricity is essential to modern life and every residential, commercial, or industrial building. It's basically what keeps everything running, and we are all dependent on it. Electricity is so important that it cannot be underestimated, and in the same way, its danger cannot also be taken for granted.
More than 20,000 workers have been injured in workplace electrical accidents over the past ten years. Although electrical hazard is not the major cause of workplace injuries and accidents, they are undoubtedly fatal and costly. These injuries and accidents can disrupt the lives of the workers and their families, affect employees' productivity, and cause significant damage to the company. This is the reason why Occupational Health and Safety Administration (OSHA) has been very strict with implementing electrical safety procedures such as Lockout Tagout in a workplace.
Electrical accidents happen not only at the workplace but even at home. An estimated 51,000 electrical home structure fires occur every year, resulting in property damage of more than $1.3 billion (National Fire Protection Association, 2003-2007). Additionally, the U.S. Consumer Product Safety Commission reports around 400 electrocution injuries in the U.S. each year.
One of the most common reasons for electric shock is a ground fault that can exist even with proper wiring and fusing circuit-breaking equipment. Its consequences can be devastating, but there are things we can prepare against them. This is where the role of GFCI comes in. To better understand GFCI, let's start this article by understanding Ground Fault first.
Aground fault happens when electricity takes an unplanned path to the ground. The current drastically and quickly increases, leading to tripping of the breaker. Ground faults can be caused by damage to the appliances, incorrect wiring, or poor or worn wire insulation. These are most dangerous in areas that usually experience high moisture, such as a bathroom, kitchen, or garage. There are times when the chosen path to the ground is outside the appliance, and when someone unknowingly touches it, an electrical shock occurs. Electrical shock is the most common hazard, but it can also lead to fires and burns. An easy yet great measure against them is adding aGFCI orGround Fault Circuit Interrupter to your electrical circuits to prevent and stay safe from ground faults.
AGround-Fault Circuit Interrupter (GFCI) is a fast-acting circuit breaker that measures and compares the current, both input current and output current. When it detects even a slight imbalance in the circuit caused by current leakage to the ground, the outlet disconnects electricity within 20-30 milliseconds. With this, it prevents electric shock or electrocution. It also mitigates electric fire and stops electricity in damp environments, preventing undesired accidents. This is the reason why Occupational Safety and Health Administration (OSHA) requires companies to includeGFCI in their program to protect workers and prevent fatal electrical accidents.
All areas exposed to moisture requireGFCI protection. AlthoughGFCI can be helpful in any area of your home or workplace, areas where water may be present, are more of an electrical hazard than dry areas. In general,Ground Fault Circuit Interrupter should be installedin areas at home such as the kitchen, bathroom, laundry areas, garage, and outdoor areas should be equipped withGFCI protection.
On the other hand, it is critical for the workplace to provideGFCIon job sites for receptacle outlets in use and not as a part of the building's permanent wiring. A company must give the approved GFCIs for all 120-volt, single-phase, 15-and 20-ampere receptacle outlets on construction areas that are not part of the permanent wiring of the building that is in use by the employees. If there is any receptacle installed as part of the permanent wiring of the building, then the company must provideGFCI protection.
GFCIs are usually available in three different types: cord-connected type, portable, and receptacle. Each one has its own distinctive function and work. Cord-connected type GFCI is an attachment plug which protects the cord and any electrical equipment attached to the cord. Similarly with portable type, it embodies a no-voltage release device that will disconnect power from the source if any supply conductor is open.
On the other hand,Ground Fault Circuit Interrupter Receptacles are commonly used as standard receptacles. It is placed inside regular outlet boxes, and it protects you against portable electrical device faulting. These devices are pretty popular because of their low cost.
And finally, the Portable GFCIs can be used in place of permanentGround Fault Circuit Interrupter outlets. It can plug into a standard receptacle and come in numerous forms, such as extension cords or a simple box directly plugged into an electrical outlet. Portable GFCIs also incorporate a no-voltage device that can disconnect current to the outlets if any current conductor is open.
Installation and testing ofGFCI are vital for both the workplace and home. Although portable GFCIs do not require an electrician for installation, a licensed electrician should install a receptacle and circuit breaker.
Ground Fault Circuit Interrupter must be testedmonthly to ensure safety and functionality. To test theGFCI receptor, simply plug lamps into the receptacle and hit TEST. Once it is done, theGFCIRESET button will appear, and the light should disappear. During this time, if you notice that the light is not going out while the RESET button is popped out, it means the receptacle was installed incorrectly. Another thing, if the button does not come out and the light does not come on, your receptacle might be damaged, and you should consult an electrician.
Note however that you can always rely on a licensed electrical technician to inspect and assess the ground fault. It would still be best to hire licensed professionals as they would perform all the assessment work and fix any issues that might hinder its functioning and will also make it work effectively.
For years,GFCI has been preventing electrocutions and accidents. In fact, since the introduction ofGFCI protection in 1975, there has been an 80% drop in electrocutions. Also, between 1975 and 2020, there was a 93% drop in consumer product electrocutions.
Now, if you will ask, what ifGFCI protection was not required?Studies show an estimated 603% increase in electronic shocks and a 1,118% increase in consumer product electrocutions ifGFCI protection was not required.