Safety Book
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Contents |
What
Is Electricity?
Fuses and Circuit Breakers
Ground Fault Circuit Interrupters
Electrical Cords, Plugs, Outlets
and Extension Cords
Generators
Surge Protection
Space Heaters
Life Support Equipment
Yardwork |
Tampering With Electrical Equipment
Downed Power Lines
Lightning
Signs on Power Poles
Go Fly A Kite
Watch For Our Crews
Be Sure Your Electric Service Equipment
Is In Good Shape
Please Provide Safe Access
Trees |
Call Before You Dig
Substations/Transmission Lines
Ladders, Pipes, Antennas, etc.
Fiber Optics
Contractors, Builders, etc.
(Know the Law, Avoid Unsafe Shortcuts,
Use Personal Safety Equipment, Remember the Ten Foot Rule)
Miscellaneous (Fluctuating
Power, Holiday Lighting, Water Hazards, Halogen Floor Lamps, Cleaning
Appliances, Emergency Lighting, Electrical Fires) |
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What Is Electricity?
It's a form of energy that's caused by the movement of electrons from atom
to atom in a conductor.
Electricity always travels in a circuit, and when you switch on an appliance,
you complete a circuit for electricity to travel. It travels along power lines
to your home, through the wiring to the outlet, through the power cord to the
appliance, then back through the cord, the outlet, the household wiring, and
back to the power lines.
During all these travels, electricity seeks the path of least resistance. If
wiring and power cords are properly insulated, the path of least resistance is
the copper conductor in the wiring. If that insulation is cracked or frayed, the
electricity may find an easier path to ground.
Water is an excellent conductor of electricity, forming a path with very
little resistance. That's why water and electricity can be a dangerous
combination, and why it's important to keep them apart.
It's also good to remember that human beings are composed of about 70% water.
So keep your electrical appliances and wiring in safe operating condition.
Overloaded equipment and overheated circuits cause most electrical fires.
Electrical fires can also be caused when accumulated oil and dirt overheat a
motor, or when a spark ignites scraps, dirt, dust, or flammable liquids.
Fuses and Circuit
Breakers
You should know where your circuit breakers or fuses are located. They're usually in a metal box on an
interior wall near where the meter is located. (You can use the main switch at
the service panel to cut off all power when doing an electrical project, or in
the case of fire or emergency. If you do not have a main switch, you can turn
off all the circuit breakers.)
When too much electrical current flows into a circuit, fuses or circuit
breakers will "open" or interrupt the flow of electricity. This helps prevent
damage to appliances, damage to household wiring, and electrical fires.
When a circuit breaker trips, or a fuse is blown, it's a warning that
something is wrong. Either you have too many appliances operating on that
circuit, or one of the appliances is malfunctioning. Disconnect the appliances
on that circuit before resetting the breaker or replacing the fuse. If the
circuit breaks again while you're reconnecting those appliances, you'll know
which one is causing the problem. (NOTE: Be sure to replace any blown fuse with
one of the right amperage. Using the wrong size can cause fires.)
Ground Fault Circuit
Interrupters
A Ground Fault Circuit Interrupter (GFCI) is a fast-acting circuit breaker that senses when a
plugged-in appliance is losing current to ground, and shuts off the power. If
that current leaking to ground in passing through a person, the GFCI can be a
real life-saver. (A slight shock may still be felt in the split second before
the GFCI trips.)
GFCI's are used primarily where water may come in contact with electricity,
such as in bathrooms, kitchens, garages and outdoors. GFCI outlets have "test"
and "reset" buttons, and it's a good idea to test them regularly.
1. To test, plug a night-light into the GFCI outlet, and turn it on.
2. Press the test button on the GFCI, and the night-light should go out.
3. Press the reset button to restore power.
If something doesn't work properly in this three-step test, have the GFCI checked or replaced.
Electrical Cords, Plugs,
Outlets and Extension Cords
Do not use damaged or brittle electrical cords. They can cause shorts, shocks, or fires and should be
replaced. Don't overload circuits with too many appliances.
To avoid damage, remove cords from outlets by pulling the plug, not the cord
itself. Never attach a cord to any surface with nails or staples, which can
break the insulation. Also, twisting, kinking, bending, or walking on cords can
harm them.
Never remove the third prong from a three-pronged plug. The third prong is
there to safely ground your electrical appliance. Most power tools and major
appliances have three-pronged plugs for safety. If you don't have three-hole
outlets, adapters are available at most hardware and department stores.
Teach children to never put fingers or objects into electric appliances. If
you have small children, put plastic safety caps in all unused wall outlets to
prevent them from pushing objects into the outlet openings.
Use extension cords that are sufficiently rated for the application. Most
extension cords should use 16-gauge or thicker wire. (The smaller the gauge
number, the thicker the wire.) Don't run cords under carpeting or furniture,
or in high-traffic areas.
Extension cords with Ground Fault Circuit Interrupters (GFCIs) are available,
too, and should be use in potentially wet situations.
Generators
Back-up generators are a common way to provide emergency electrical service. If you use one, please
let us know.
Most customers just run an extension cord from the generator
to whichever individual appliance they wish to run. This works well if you don't
need to run a lot of things at the same time. Just make sure that you use a
heavy-duty, grounded extension cord.
During a power outage, you can use a generator to power your
freezer for a few hours, two or three times a day. This will usually keep the
food frozen if you don't open the freezer much. For the rest of the time, the
generator can be used to power lights, to run a space heater, to do some
cooking, or whatever else you choose.
With a larger generator, you can power things in your home
directly through your household distribution panel (breaker box). You then
control which items are actually powered by simply turning the breakers off or
on.
But this can be dangerous. Electricity can be sent back out
through the meter base and into the neighborhood distribution lines. That can be
extremely dangerous if we have crews working on those lines.
It's very important that the power produced by your generator
be isolated from the neighborhood distribution system. The best way to
accomplish this is with what's called a "Double Pole, Double Throw" transfer
switch. This means simply that when your generator is powering your home, that
circuit is physically separated from the outside power lines. When the switch is
thrown to connect with the outside power lines, it disconnects from the
generator.
It's important that safety be built into the system at the
beginning. Decide what your real electrical requirements are, and select the
appropriate generator. If you're going to run your generator through your home's
wiring system, an electrical permit is required, and you should get a licensed
electrician to help.
And don't run your generator in an enclosed space. The
exhaust fumes can be toxic. You should have a smoke detector and carbon monoxide
detector if using a generator near any living areas.
Surge Protection
Today's sensitive electronic equipment is very susceptible to even minor fluctuations in power supply.
These fluctuations can be called a variety of things (spikes, surges,
etc.).
Power fluctuations can be caused by things outside your home
like lightning, tree branches hitting power lines during high winds, vehicles
hitting power poles, etc.
But fully 70% of all power fluctuations are caused by things
inside your home. Things like the routine cycling of refrigerator motors, and
the use of vacuum cleaners, hair dryers, mixers and hand tools.
Whatever you call them, and whatever causes them, these
fluctuations can cause sometimes irreparable damage to sensitive electronic
equipment like home computers, VCRs, CD players, digital clocks and microwave
ovens.
The best way to protect these types of equipment from damage
is to install power protection equipment.
Power protection equipment comes in a variety of sizes and
shapes for a variety of different applications. It's important to get the proper
type of protection for the appliances you want to protect.
For instance, it wouldn't make sense to protect a $20 coffee
pot with a $70 surge protector. By the same token, you'd probably want something
more than a $3 surge protector for your $5,000 home computer system.
And remember that surge protectors don't last forever.
They're designed to take the electrical hit, instead of your appliance, and
quite often they die in the process. Better ones will take more hits, but it's
always a good idea to get one with a diagnostic light that tells you it's
working properly.
If you decide to purchase power protection equipment, here
are the things you should look for:
Clamping Level – This is the measure of the maximum
voltage the device actually allows to reach your equipment. The lower the
clamping level, the better the device, and current standards call for a
clamping level of 330 volts. (Make sure that any unit you buy is tested and
certified to UL 1449 standards.)
Noise Filtration –
This feature helps the device filter radio and electromagnetic interference.
Fire Safety – In addition to a circuit breaker, a
good unit will have a heat sensitive fuse built into the product to prevent
fires.
Diagnostics – A good device will indicate
whether the surge protector is still working, and if the outlet is properly
wired and grounded. Avoid devices with only an On/Off light.
Warranties – Make sure you're getting one. A good
warranty should cover not only the device, but any equipment you have
connected to it. Make sure the warranty matches the value of your connected
equipment.
If the surge protection equipment you purchase comes with a
guarantee, make sure you keep all the necessary paperwork.
Space Heaters
Space heaters are meant to
provide supplemental heat, and should not be used as a main heating source. Keep
space heaters at least 3 feet away from any combustible material such as
bedding, clothing, draperies, furniture and rugs. Don't use them in rooms where
children are unsupervised, and remember to turn them off and unplug them when
they're not in use. It's always a good idea to have a smoke detector installed
if you're using a space heater.
Life Support Equipment
If you or someone in your home requires electrically-operated life support equipment,
please let us know.
What we can do:
- Notify you when we're having a planned outage, so you can make arrangements if necessary.
- If possible, give you an estimate of how long the power may be out in an
unplanned outage, so that you can make arrangements if necessary.
- Move you up on our priority list, when possible, if we have several outages to repair.
What we can't do:
- We can't guarantee that you'll have power all the time. Power outages
occur for a variety of reasons, including storms, accidents and equipment
failure. We do our best to get power restored quickly in those situations.
- We can't guarantee that we'll never shut off your power for non-payment
of outstanding bills. We'll be happy to set up a payment schedule if you're
having trouble paying your electric bill on time.
What we recommend:
- We recommend that you have some sort of emergency back-up system in
place if the power ever does go out.
- We also recommend that you have a plan to deal with any extended outages.
It's not unusual for a serious storm to cause outages lasting for several
days. You may want to think about alternate places to stay if such a situation
occurs.

Yardwork
Only use extension cords that are rated for outdoor use (such as GFCI-equipped cords), and rated for the
power needs of the equipment.
Electric-powered mowers and other tools should not be used in
the rain, on wet grass, or in wet conditions. Inspect power tools and electric
lawn mowers before each use for frayed power cords, broken plugs, and cracked or
broken housings. If damaged, stop using the item immediately, and repair or
replace it.
Remember to unplug all portable power tools when not in use.
Tampering With
Electrical Equipment
Theft of electricity or tampering with utility equipment is dangerous, as well as being a serious crime.
Installing illegal connections creates unsafe conditions for building occupants
and neighbors.
A $150 fee will be charged when tampering is confirmed. The
offender will also be responsible for any service illegally used, and the cost
of any necessary repairs to utility equipment.
If utility equipment has been tampered with, or if
electricity service is considered unsafe, that service may be disconnected
without notice.
Downed Power Lines
Downed power lines are
extremely dangerous. Do no touch, or even go near, any power line! Always assume
it is "hot" and report it to your local PUD office immediately. Serious injuries
or death can result from touching a "hot" wire or an object in contact with it.
Be especially careful, too, of fences that may be electrified. Remember that the
earth around a downed line can be energized, so stay away and remember to keep
children away!
If a person comes in contact with a power line, don't touch
the person or the line! Call 911 immediately. (It is possible to separate the
power line from the person, with a long, dry, non-conducting object such as a
wood broom handle, but this is extremely dangerous. It should only be done by a
person who is experienced with electricity, and only if emergency assistance is
not immediately available.)
If a power line falls on your car while you're driving, stay
in the car! If you can drive the car out from under the wire, do so at once. If
you must leave the vehicle for safety reasons, jump clear. Do not touch the
vehicle and the ground at the same time. Keep both feet together, and hop until
you're clear of the energized area.
Don't attempt to cut any trees or branches that have fallen
on power lines, unless a Central Lincoln PUD service person tells you it is safe
to do so.
Lightning
During an electrical storm, don't use appliances like hairdryers, toasters, washing machines, or
others that require a lot of physical contact. Use telephones only in an
emergency. Don't take a bath or shower when there's lightning. Use surge
protection devices to prevent damage to your electrical appliances.
Signs on Power Poles
Please don't put signs on
power poles. It's a major safety issue for our crews who have to work on those
poles. Signs are not allowed on our power poles without specific written
permission.
It isn't unusual to find dozens of nails, staples, screws,
and other fasteners stuck into our power poles at about eye level. Those
fasteners often protrude, and they can be very hazardous if our employees need
to climb the pole.
In addition, all those punctures in the pole allow moisture,
bugs, and rot to affect the integrity of the poles. Those punctures can
significantly reduce the expected lifespan of the pole.
So please, if you find you need to place a sign for some event, find a safer
alternative than our power poles.
Go Fly A Kite
If you plan to go kiteflying, please keep these tips in mind:
- Fly kites in wide open spaces, away from overhead power lines.
- Avoid flying kites when the weather is wet or stormy.
- Use only dry kite string.
- Never use wire or metal anywhere on your kites.
- If your kite gets tangled in overhead power lines, call
the PUD right away for help. Never try to free a kite by yourself.
We'd also like to remind you about foil balloons. Never
release a foil balloon into the air, whether you're near overhead power lines or
not. Balloons can drift for miles, then come in contact with power lines causing
outages or damage to electrical equipment, often resulting in fires.
If you do lose a foil balloon in overhead power lines, treat it exactly the
way you'd treat a tangled kite: Don't try to free it yourself! Call the PUD
immediately for help.
Watch For Our Crews
When our crews are working
alongside the road, they usually display yellow flashing lights, often in
conjunction with warning signs, traffic cones, and/or flaggers. Because of the
size of some of vehicles we use and the nature of the work, these vehicles must
sometimes be partly in the roadway itself. (Also be aware of any extended
booms or opened excavations.)
That means that motorists may sometimes need to cross into the other lane of
traffic to safely pass the worksite. And that's why it's very, very important
that motorists slow down and proceed with caution when they see the flashing
lights of the PUD trucks, or any other emergency vehicles. Thanks in advance for
your cooperation!
NOTE: Most of our vehicles are equipped with radio communications
devices, and some have Automated External Defibrillators (AEDs) that can be used
in emergency situations. The vehicles that have this equipment will have "Radio
Help" or "AED" markings.
Be Sure Your Electric
Service Equipment Is In Good Shape
It's important to
periodically check the condition of your outdoor electric equipment. It could
cause serious problems for you if it's in shaky condition.
This equipment can wear out over time, become damaged by tree
limbs, ladders, etc., or corrode due to our coastal climate.
The equipment you should check includes the meter base, the
service mast and the weatherhead. (Customers whose homes are served by
underground lines will not have a weatherhead or service mast, but will have the
meter base.)
In the diagram at right, the shaded area shows you which
equipment belongs to you, not the PUD, and is yours to maintain.
Checking your electrical service equipment is very easy. Just
walk over to your electric meter and look for the following:
• Advanced rust or corrosion on any metal assembly.
• A service mast that's bent or pulled away from the wall of your house.
• A missing or severely rusted weatherhead that might allow water to
collect in the meter base.
• A meter base with a hole in it.
While this equipment is built for the outdoors, repair and
replacement are sometimes necessary. Maintenance of your outdoor electrical
equipment is important, so take the time to look it over carefully.
If you notice any of these signs, or if you think there may
be a problem with the equipment, contact your local PUD office for information,
or a licensed electrician for assistance.
Please Provide Safe
Access
Many people have come up
with clever ways to camouflage or screen electrical equipment that may be on
their properties. Unfortunately, some of those ways of screening meters,
padmount transformers, and other equipment can cause some problems.
Our meter readers and servicemen need to get to that equipment from time to
time, either to take a reading, to repair, to upgrade, to remove, or to replace
defective equipment.
So when you're landscaping your property, please remember that our people
need ready access to our electrical equipment that's on your property. That
includes meters, transformers, poles, etc.
Trees
Never cut tree limbs that
are touching power lines or that could fall into them. Always call the PUD first
for advise on how to proceed.
Any trees planted in the utility right-of-way, or service area from that
right-of-way to your home, must be very low-growing so they won't interfere with
power lines. If your tree encroaches into the PUD right-of-way, it is your
responsibility to keep it trimmed away from power lines. In some cases, the PUD
may be forced to remove a tree that presents a danger to electric reliability.
Call Before You Dig
Please remember that
electric utility cables may be buried beneath your property. Also keep in mind
that previous owners of your property may have buried electrical lines to supply
electricity for shops, hot tubs, outdoor lighting or other outbuildings.
Underground electrical cables are live and dangerous, so it's obviously a good
idea to know if there are cables in the area where you plan to plow, trench, dig
or blast.
In addition to electrical cables, there are many other types
of utility equipment that are routinely buried underground. Telephone lines,
cable television lines, gas lines and water distribution pipes are among the
most common.
Most utilities in our area belong to a toll-free one-call
service that can tell you if anything is buried in your area. The number is
1-800-332-2344, and you should call at least 48 hours before you plan
to start work. (NOTE: A few local water districts do not belong to this
service, so you may need to give them a call, too.) Please remember that
this service is usually limited to rights-of-way and roadways, and does not
include any utilities buried on the homeowners property.
If you do uncover an underground electrical cable, don't try
to move it or work around it! Please call your local Central Lincoln PUD office
immediately for assistance.
Substations/Transmission
Lines
If a toy or pet gets into
a substation, don't try to get it yourself! Call the PUD for assistance.
Don't climb power poles or transmission structures. Overhead wires carry high
voltage and can kill on contact.
Children should be taught the same rules as adults about avoiding power
lines, transformers (either pole-mounted or pad-mounted), substations,
and other electrical equipment. Learning to recognize "Warning: High Voltage"
signs will keep them away from potential trouble.
Ladders, Pipes,
Antennas, etc.
When carrying or working
with ladders, pipes, antennas, or any other long, awkward equipment, stay at
least ten feet away from power lines.
Fiber Optics
Fiber Optic cables are
becoming a lot more common in our area. They're used by phone companies, cable
companies, and others (including Central Lincoln PUD) for communications
purposes. Like power lines, these cables can be broken or knocked down by storms
or accidents. And just like power lines, they can be dangerous. They carry
laser-like light beams that can cause severe eye damage if someone looks into
the end of the cable. And the cable strands are made of extremely fine threads
of glass, which can easily cut through clothing and skin.
Fiber optic cables are usually from 1/4 to 3/4 inch in diameter, with black
insulation, and have multi-colored plastic buffer tubes inside, lined with glass
threads. The outside insulation often has orange identifying bands or markings.
If you see a fiber optic cable broken or on the ground, don't touch it!
Contractors, Builders, etc.
- Know The Law. Be sure to follow federal and/or state safe work practices when working on
or using electrical tools or equipment.
- Avoid Unsafe Shortcuts. It may take a bit longer to inspect
power cords for wear and tear, or to keep your work area clean and dry, but
it's worth a few moments to prevent shock or fire. Before using unfamiliar
equipment, study instructions and get questions answered.
- Use Personal Protective Equipment. If you work around
electricity, your protective gear helps protect you against shock and
electrical burns. Keep boots, gloves, and other gear in good condition, as
even a pinhole can let electricity pass through. Use insulated tools and
handling equipment, such as nonconductive ropes and protective shields.
- Remember The Ten-Foot Rule. This rule requires that before
anyone begins work that may bring people, equipment, or other objects within
10 feet of overhead power lines, they must notify Central Lincoln PUD.
Arrangements must be made in advance to protect you against the danger of
accidental contact with wires or electrical equipment. For your safety, avoid
overhead wires when placing or moving ladders or other metal objects. In
addition, do not erect antennas near power lines.
Miscellaneous
- Fluctuating Power
– Fluctuating power may cause damage to appliances. Televisions,
VCRs and computers are particularly vulnerable
to this problem. If you're experiencing power fluctuations (flickering lights,
some lights bright and others dim, etc.), you may want to unplug your
appliances, disconnect the circuit breakers that serve them, and notify the
PUD as soon as possible.
- Holiday Lighting – Always turn off holiday lights
before you leave home. Keep trees, packages, wrapping paper, etc., away from
heat sources.
- Water Hazards – Always use Ground Fault Circuit
Interrupter-equipped cords or outlets. Don't leave plugged-in appliances where
they might come into contact with water. If a plugged-in appliance falls into
water, NEVER reach in to pull it out, even if it's turned off. First turn off
the power supply to that appliance at the breaker box, and then unplug the
appliance.
- Halogen Floor Lamps – Halogen floor lamps operate
at much higher temperatures than standard incandescent light bulbs. Never
place a halogen floor lamp where it could come in contact with draperies,
clothing or any other combustible materials. Be sure to turn the lamp off
whenever you leave the room for an extended period of time, and never use
halogen torchiere lamps in children's bedrooms or playrooms.
- Cleaning Appliances – Always unplug an appliance
before cleaning it. Even if it's turned off, it can still shock you. Never
insert metal into a toaster if it's plugged in. If you're trying to remove
burnt toast, unplug the toaster first. Use outlets with GFCIs for appliances
near sinks.
- Emergency Lighting – Keep a flashlight, with fresh
batteries, where you can easily find it in the dark. Use candles and oil lamps
with care; they can be a fire hazard!
- Electrical Fires – Never use water on an electrical
fire, as it can cause a shock hazard or make the fire spread. Use a
multipurpose fire extinguisher instead. However, you should only try to
extinguish a fire yourself if you are trained and the fire is small (less than
3 feet by 3 feet) or nonthreatening. When in doubt, get out and take others
with you. Also, you should not continue to fight an interior fire once the
first fire extinguisher is expended.
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