If you’re like millions of people, you’d probably
use an extension cord to reach the nearest unused outlet. Or, you
might add another power strip to the same outlet being used for your
other equipment. What’s wrong with using an extension cord or a
power strip to run more electrical equipment?
In solving the problem of too few
outlets, you may create another — an overloaded circuit. If too many
pieces of equipment are plugged into the same outlet and they’re all
on at the same time, more current may be running through the outlet
than it can handle. When that happens, the wiring or the outlet will
overheat and this could potentially create an electrical fire.
Overloading is even more of a problem with extension cords.
To prevent other electrical
hazards, review this list and then take steps to remedy the
situation.
Potential Hazard: Overloaded
circuits can cause an electrical fire. What To look for: Outlet or
wall is warm to the touch; outlet is discolored; circuit breakers
frequently trip, or fuses frequently blow; a burnt smell of
insulation is noticeable.
Remedy: Have an electrician run a
dedicated circuit and install additional outlets.
Potential Hazard: Overloaded
extension cord can cause an electrical fire.
What To Look For: Extension cord
is warm to the touch.
Remedy: (1)Use an extension cord
with the same or larger wire size as the cord being extended.
(2)Since extension cords are designed for temporary use, have an
electrician install additional outlets and you don’t need to use
extension cords.
Potential Hazard: Ungrounded
outlets that will not protect you from an electrical shock in the
event of a short circuit. What To Look For: Equipment cord has a
three-prong plug, but the nearest outlet has only two slots for the
plug.
Remedy: (1) Inspect wiring at the
out-let to see if there is a ground wire. If there is a ground wire,
replace the existing outlet with one that accepts a three-prong
plug, and connect the ground wire to the outlet. (2) If there is no
grounding wire, have an electrician run a new circuit with ground
and install new outlets.
Potential Hazard: Improper
placement of extension cords can cause a fire or cause someone to
trip. What To Look For: Extensions cords running through walls,
under carpet or furniture, across doorways, or draped over heaters
or equipment.
Remedy: Try rearranging office
furniture; or better yet, add more outlets in the room.
What types of hazards are caused
by power surges?
Temporary power surges can damage
equipment and cause computer programs to lock up and become
corrupted. Many people assume that power surges are caused mainly by
lightning strikes, but 80 percent of them are generated from within
the structure.
What Causes Power Surges Besides
Lightning?
Common sources of power surges
include appliances such as air conditioners, washing machines,
clothes dryers and refrigerators. Office equipment, including laser
printers, photocopiers and fluorescent lights also generate
temporary power surges.
How can I protect my office from
power surges? There are several devices that can provide protection
from power surges. The first line of defense is an inexpensive power
strip that incorporates surge protection. These devices often cost
between $20 and $80. You may want to purchase power-strips with the
maximum amount of surge protection, including protection for
telephone and data lines.
Another option is to install
surge-protected wall receptacles. “Quad receptacles” that have four
outlets with built-in surge protection can replace standard
electrical outlets.
For more robust protection, check
into two other devices: a panel-mounted surge protector installed
next to the circuit breaker panel, and a meter socket surge arrestor
installed at the electric meter. These devices can provide greater
surge protection and should be installed by a licensed electrician.
Blackouts and brownouts, now a
more frequent occurrence in certain parts of the country, can also
damage office equipment and cause the loss of important data.
The best solution for preventing
this is to purchase an uninterruptible power supply (UPS). Not only
does a UPS device allow time for an orderly shutdown of a computer
when the power goes out, it also regulates the flow of electricity,
smoothing out the current before it goes to equipment. Some UPS
devices also incorporate surge protection.
Will surge protectors protect me
from overloaded circuits? Surge protectors and UPS devices protect
equipment, but they do not protect from the potential hazards of an
overloaded circuit. Make sure the electrical load is not too great
for the circuit. A licensed electrician can check your electrical
system and provide guidance on the capacity of electrical
circuits in your office.
Telltale signs of overloading
include:
• Outlets warm to the touch;
• Outlets that are discolored;
• Circuit breakers that
frequently trip;
• Fuses that frequently blow;
• Burned insulation odors; and
• Extension cord that is warm to
the touch.
To prevent these electrical
hazards, contact a licensed electrician to install dedicated
circuits where needed. It is also smart to install outlets to
eliminate the use of extension cords.
Converted Offices
Nearly one third of American
households now have a home office. If you have converted an older
building, home or room into an office, it is important that the
electrical system can handle the load. Make sure new office
equipment will not overload your circuits. Contact a licensed
electrician to inspect your electrical system.
FSM