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(800) 339-9140 or (919)303-2525 CERTIFIED PLUS HOME INSPECTIONS Raleigh, North Carolina Home Inspection Company Serving the Greater Triangle Area MONEY BACK GUARANTEE! Prices Start at $199 Raleigh North Carolina Licensed Home Inspector #2173
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RALEIGH NC HOME INSPECTION PRICES STARTING AT $199 FOR A NORTH CAROLINA HOME INSPECTION BY A STATE CERTIFIED NC HOME INSPECTOR. STATE OF NORTH CAROLINA / NC LICENSED ASHI, NACHI CERTIFIED, NORTH CAROLINA INSPECTORS, HOME INSPECTION SERVICES FOR ALAMANCE, CHATHAM, JOHNSTON, LEE, ORANGE, WAKE. TOWNS AND SURROUNDING AREAS CHAPEL HILL, HILLSBOROUGH, RALEIGH, NC, APEX, NC, DURHAM, NC, CARY, NC COUNTIES.
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Aluminum Wiring
Between
approximately 1965 and 1973, single-strand aluminum wiring was
sometimes substituted for copper branch-circuit wiring in
residential electrical systems due to the sudden escalating
price of copper. After a decade of use by homeowners and
electricians, inherent weaknesses were discovered in the metal
that lead to its disuse as a branch wiring material. Although
properly maintained aluminum wiring is acceptable, aluminum
will generally become defective faster than copper due to
certain qualities inherent in the metal. Neglected connections
in outlets, switches and light fixtures containing aluminum
wiring become increasingly dangerous over time. Poor
connections cause wiring to overheat, creating a potential
fire hazard. In addition, the presence of single-strand
aluminum wiring may void a homes insurance policies.
Inspectors may instruct their clients to talk with their
insurance agents about whether the presence of aluminum wiring
in their home is a problem that requires changes to their
policy language.
(Read more below.)
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A CERTIFIED PLUS HOME INSPECTION INCLUDES:
 | PRICES - START AT $199 - The price is set according to the size of the house. Call for exact prices for your North Carolina real estate home inspection. |  | REPORT - ON SITE SUMMARY REPORT - At the end of the home inspection, you will receive a summary report of the repairs. You are now ready to negotiate any repairs right after the inspection. |  |
MONEY BACK GUARANTEE - Our home inspectors are professionals. We are one of the few companies that offer a money back guarantee. If you are not satisfied with our home inspection, we will gladly refund your money. |  | APPLIANCES - All appliances that are purchased with the house will be tested at no extra charge. Appliances such as the dishwasher, stove, refrigerator and the washer and dryer. |
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Facts and Figures
- On April, 28, 1974, two
people were killed in a house fire in Hampton Bays, New
York. Fire officials determined that the fire was caused by
a faulty aluminum wire connection at an outlet.
- According to the Consumer
Product Safety Commission (CPSC), "Homes wired with aluminum
wire manufactured before 1972 ['old technology' aluminum
wire] are 55 times more likely to have one or more
connections reach "Fire Hazard Conditions" than is a home
wired with copper."
Aluminum as a Metal
Aluminum possesses certain qualities that, compared with
copper, make it an undesirable material as an electrical
conductor. These qualities all lead to loose connections,
where fire hazards become likely. These qualities are as
follows:
- higher electrical
resistance. Aluminum has a high resistance to electrical
current flow, which means that, given the same amperage,
aluminum conductors must be of a larger diameter than would
be required by copper conductors.
- less ductile. Aluminum will
fatigue and break down more readily when subjected to
bending and other forms of abuse than copper, which is more
ductile. Fatigue will cause the wire to break down
internally and will increasingly resist electrical current,
leading to a buildup of excessive heat.
- galvanic corrosion. In the
presence of moisture, aluminum will undergo galvanic
corrosion when it comes into contact with certain dissimilar
metals.
- oxidation. Exposure to
oxygen in the air causes deterioration to the outer surface
of the wire. This process is called oxidation. Aluminum wire
is more easily oxidized than copper wire, and the compound
formed by this process aluminum oxide is less conductive
than copper oxide. As time passes, oxidation can deteriorate
connections and present a fire hazard.
- greater malleability.
Aluminum is soft and malleable, meaning it is highly
sensitive to compression. After a screw has been
over-tightened on aluminum wiring, for instance, the wire
will continue to deform or flow even after the tightening
has ceased. This deformation will create a loose connection
and increase electrical resistance in that location.
- greater thermal expansion
and contraction. Even more than copper, aluminum expands and
contracts with changes in temperature. Over time, this
process will cause connections between the wire and the
device to degrade. For this reason, aluminum wires should
never be inserted into the stab, bayonet or push-in
type terminations found on the back of many light switches
and outlets.
- excessive vibration.
Electrical current vibrates as it passes through wiring.
This vibration is more extreme in aluminum than it is in
copper, and, as time passes, it can cause connections to
loosen.
Identifying Aluminum Wiring
- Aluminum wires are the color
of aluminum and are easily discernible from copper and other
metals.
- Since the early 1970s,
wiring-device binding terminals for use with aluminum wire
have been marked CO/ALR, which stands for copper/aluminum
revised."
- Look for the word "aluminum"
or the initials "AL" on the plastic wire jacket. Where
wiring is visible, such as in the attic or electrical panel,
inspectors can look for printed or embossed letters on the
plastic wire jacket. Aluminum wire may have the word
"aluminum," or a specific brand name, such as "Kaiser
Aluminum," marked on the wire jacket. Where labels are hard
to read, a light can be shined along the length of the wire.
- When was the house
built? Homes built or expanded between 1965 and 1973 are
more likely to have aluminum wiring than houses built before
or after those years.
Options for
Correction
Aluminum wiring should be
evaluated by a qualified electrician who is experienced in
evaluating and correcting aluminum wiring problems. Not all
licensed electricians are properly trained to deal with
defective aluminum wiring. The CPSC recommends the following
two methods for correction for aluminum wiring:
- Rewire the home with copper
wire. While this is the most effective method, rewiring is
expensive and impractical, in most cases.
- Use copalum crimps. The
crimp connector repair consists of attaching a piece of
copper wire to the existing aluminum wire branch circuit
with a specially designed metal sleeve and powered crimping
tool. This special connector can be properly installed only
with the matching AMP tool. An insulating sleeve is placed
around the crimp connector to complete the repair. Although
effective, they are expensive (typically around $50 per
outlet, switch or light fixture).
Although not recommended by
the CPSC as methods of permanent repair for defective aluminum
wiring, the following methods may be considered:
- application of anti-oxidant
paste. This method can be used for wires that are
multi-stranded or wires that are too large to be effectively
crimped.
- pigtailing. This method
involves attaching a short piece of copper wire to the
aluminum wire with a twist-on connector. the copper wire is
connected to the switch, wall outlet or other termination
device. This method is only effective if the connections
between the aluminum wires and the copper pigtails are
extremely reliable. Pigtailing with some types of
connectors, even though Underwriters Laboratories might
presently list them for the application, can lead to
increasing the hazard. Also, beware that pigtailing will
increase the number of connections, all of which must be
maintained. Aluminum Wiring Repair (AWR), Inc., of Aurora,
Colorado, advises that pigtailing can be useful as a
temporary repair or in isolated applications, such as the
installation of a ceiling fan.
- CO/ALR connections.
According to the CPSC, these devices cannot be used for all
parts of the wiring system, such as ceiling-mounted light
fixtures or permanently wired appliances and, as such, CO/ALR
connections cannot constitute a complete repair. Also,
according to AWR, these connections often loosen over time.
- alumiconn. Although AWR
believes this method may be an effective temporary fix, they
are wary that it has little history, and that they are
larger than copper crimps and are often incorrectly applied.
- Replace certain
failure-prone types of devices and connections with others
that are more compatible with aluminum wire. Remove the
ignitable materials from the vicinity of the connections.
In summary, aluminum wiring
can be a fire hazard due to inherent qualities of the metal.
Inspectors should be capable of identifying this type of
wiring. All About Home Inspections from A to Z - National Association of Certified Home Inspectors
Triangle area towns -Raleigh, Durham, Chapel Hill, Cary, Hillsborough, Carrboro, Apex, Holly Springs, Garner, Fuquay-Varina, Morrisville, North Carolina, all home inspections will be conducted to the American Society of Home Inspectors standards (ASHI ). All inspections will be conducted by a licensed, certified, insured professional NC home inspectors - Raleigh, NC. In North Carolina, all home inspections will be conducted to the American Society of Home Inspectors standards (ASHI ). All inspections will be conducted by licensed, certified, insured, professional NC home inspectors. Licensed North Carolina Home Inspectors serving: Alamance County, Chatham County, Johnston County, Lee County, Orange County, Wake County, towns and surrounding areas for Apex, Cary, Chapel Hill, Durham, Hillsborough, Raleigh, Carrboro, Holly Springs, Garner, Morrisville, Fuquay-Varina. Licensed North Carolina Home Inspector Serving: Licensed North Carolina Home Inspector Serving: Alamance County, Chatham County, Johnston County, Lee County, Orange County, Wake County. Towns and surrounding areas for Apex, Cary, Chapel Hill, Durham, Hillsborough, and Raleigh.
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