Electrical Safety

According to the U.S. Consumer Product Safety Commission (CPSC), top electrical safety hazards include electrical fires caused by aging wiring, misuse of surge suppressors, and electrocutions from wiring systems and large appliances. Electricity causes more than 40,000 fires yearly in the United States, resulting in hundreds of injuries and deaths. Electrical fires kill more than 750 people and cause more than $1 billion in property damage annually. The CPCS has identified extension cords as a leading cause of electrical fires in the home. Every six minutes there is an extension cord-related electrical fire in the United States. Extension cord fires outnumbered fires beginning with attached or unattached power cords by more than 2-to-1. Employers and employees need to consider an important element of electrical safety in the workplace; the safe use of extension cords, power strips, and surge protectors.

Electricity is essential to the operations of a modern automated office as a power source. Electrical equipment used in the workplace is potentially hazardous and can cause severe shock and burn injuries if it is improperly used or maintained. Electrical accidents usually occur due to faulty equipment, unsafe installation, or equipment misuse by of office workers.

General Electrical Safety Tips

• Replace or repair loose or frayed cords on all electrical devices.
• Avoid running extension cords across doorways or under carpets.
• In areas with small children, electrical outlets should have plastic safety covers.
• Follow the manufacturer’s instructions for plugging an appliance into a receptacle outlet.
• Avoid overloading outlets. Consider plugging only one high-wattage appliance into each receptacle outlet at a time.
• If outlets or switches feel warm, shut off the circuit and have them checked by an electrician.
• When possible, avoid the using “cube taps” and other devices that connect of multiple appliances to a single receptacle.
• Place lamps on level surfaces, away from things that can burn, and use bulbs that match the lamp’s recommended wattage.

Outlet Safety

The outlet, or receptacle, is perhaps the most commonly used and least thought of device in the home. Every electrical appliance, tool, computer, and entertainment center component we use is powered through one. We just plug in and forget about it, assuming all our power needs will be met. And that’s true if we follow some simple but essential safety principles.

• Check outlets regularly for problems, including over-heating, loose connections, reversed polarity, and corrosion. Consider having an electrical inspection performed by a qualified, licensed electrician to help determine the integrity of your outlets and your entire electrical system.
• Check for outlets with loose-fitting plugs, which can lead to arcing and fire.
• Avoid overloading outlets with too many appliances. Never plug more than one high-wattage appliance in at a time in each.
• Check for any hot or discolored outlet wall plates. Look from across the room; sometimes you’ll see a darkened area around and above the outlet in a teardrop shape that may indicate dangerous heat buildup at the connections.
• Warm to the touch is OK; hot is not. If an outlet or switch wall plate is hot to the touch, immediately shut off the circuit and have it professionally checked.
• Replace any missing or broken wall plates.

Power Cords

We can sometimes get so caught up in the safety awareness of our appliances and lamps that we forget about the safety principles that relate to their power cords. An appliance can look like it’s in good operating order and yet still represent a hazard if its cord is damaged.

• Make sure all power and extension cords are in good condition and not frayed, cracked, or cut. If the power cord to a lamp or appliance is damaged, take the item to an authorized service center, or cut the power cord and dispose of the item safely. Cutting the cord helps ensure no one else will pick up the item and take the hazard home with them.
• Never attempt to repair or splice a cut cord yourself. “Electrical” tape, as commonly referred to—usually black vinyl tape—is not rated for the heat generated by electricity running through wires. The tape will melt and burn.
• Make sure all electrical items, including appliances, extension cords, and surge suppressors, are certified by a nationally recognized independent testing lab, such as Underwriters Laboratories (UL), CSA, ETL, or MET.
• Do not coil power cords when in use.
• Do not place power cords in high-traffic areas or under carpets, rugs, or furniture.
• Power cords should never be nailed or stapled to the wall, baseboard, or another object.
• Make sure appliances are turned off before connecting cords to outlets.
• Never remove the ground pin (the third prong) to make a three-prong plug fit into a two-prong outlet; this could lead to an electrical shock.
• Never force a plug into an outlet. Plugs should fit securely into outlets, but not require much force to fit.
• Make sure to fully insert the plug into the outlet.
• Unplug appliances when not in use to conserve energy and to minimize the opportunities for electric shock or fire.

Extension Cords

Extension cords are temporary solutions only, yet most homes have at least one extension cord plugged in and left in place. Continual use can cause the insulation to deteriorate rapidly, creating a dangerous shock and fire hazard. In addition to the same safety tips that apply to power cords, remember the following principles when using extension cords.

• Extension cords should only be used temporarily; they are not intended as permanent household wiring.
• A heavy reliance on extension cords indicates that you have too few outlets to address your needs. Have additional outlets installed where you need them.
• Make sure extension cords are properly rated for their intended use, indoor or outdoor, and meet or exceed the power needs of the appliance or tool being plugged into it.
• Assume 125 watts per amp when converting to determine if the extension cord you intend to use is adequately rated for the appliance being connected to it. For example, if your appliance indicates that it uses 5 amps at 125 volts, then its wattage rating is 625 watts (5 amps X 125 volts).

Power Strips and Surge Suppressors

Power strips allow us to plug more products into the same outlet, which can help but also hinder safety if used inappropriately. Power strips and surge suppressors don’t provide more power to a location; they offer more access to the same limited capacity of the circuit into which it is connected. The circuit likely also still serves a variety of other outlets and fixtures in addition to the multiple electrical items you might be serving with the power strip. In addition to the tips above, remember these safety principles when using power strips and surge suppressors.

• Be sure you are not overloading the circuit. Know the capacity of the circuit and the power requirements of all the electrical items plugged into the power strip and into all the other outlets on the circuit, as well as the light fixtures on the circuit.
• A heavy reliance on power strips indicates that you have too few outlets to address your needs. Have additional outlets installed where you need them.
• Understand that a surge suppressor only protects the items plugged into it, not back along the circuit into which it is connected.
• Surge suppressors can manage the small surges and spikes sometimes generated by appliances turning on and off. They may even protect against a large surge generated from outside sources like lightning or problems along the power lines to the office or house. In the event of a large surge or spike, the surge suppressor is a one-time-use protector and will likely have to be replaced.
• Consider purchasing surge suppressors with cable and phone jacks to provide the same protection to your phone, fax, computer modem, and television.
• Not all power strips are surge suppressors, and not all surge suppressors can handle the same load and events. Be sure the equipment you buy matches your needs.

Determining Power Strip Capacity

All appliances indicate how much wattage is consumed when operated. That rating can be found on the appliance itself and often within the use and care booklet accompanying the product. Other appliances will indicate power usage in amps, rather than watts.

Quick Tip: If your appliance indicates that it uses 5 amps at 125 volts, then its wattage rating is 625 volts (5 amps X 125 volts).

If you are going to use extension cords, power strips or surge protectors with two or more appliances, you must add together the wattage rating for all appliances used on the cord. The total of those wattage ratings will help you determine which gauge size you will need.

Some common household examples in watts:

Do the Math

Determine all the electrical items plugged into the extension cord, power strip or surge protector. Determine the power requirements for each item, either in amps or watts. Locate the capacity of the extension cord, power strip, or surge protector you are using. Add up all the power requirements. This total should not exceed 80 percent of the rated capacity of the extension cord, power strip, or surge protector you are using.

Example: