Stupid Question

[bennie]

Re: Stupid Question

Land the aluminum separate from the copper.

 

[physis]

Re: Stupid Question

I admit, after a couple of posts the question looked different than it did at first (to me). But the aluminum is important.

 

[jro]

Re: Stupid Question

Kalmagnt: Yes it is safe, you will be ok to tie the copper and aluminum grounds together into what is called a pigtail using a listed wire connector, then to your j-box, its that simple.

 

[iwire]

Re: Stupid Question

kalmangt and jro, here is what The U.S. Consumer Product Safety Commission (CPSC) has to say about using copper to aluminum pigtails.

By The U.S. Consumer Product Safety Commission

CPSC believes that "twist-on" connectors, receptacles and switches and other devices that connect directly to aluminum wires, are an inadequate solution. The COPALUM crimp connector system provides a safe, permanent fix.

Here is the whole text.

By The U.S. Consumer Product Safety Commission

FOR IMMEDIATE RELEASE
May 1, 2003
Release # 03-120 CPSC Consumer Hotline: (800) 638-2772
CPSC Media Contact: Scott Wolfson, (301) 504-7051
Tyco Electronics Media Contact: Paul Lavenberg, (717) 592-2409

May Is National Electrical Safety Month: Good News for Homeowners - Aluminum Wiring Fix Still Available
WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission (CPSC) announced today that Tyco Electronics Corp., of Harrisburg, Pa., has agreed to continue offering the COPALUM connector repair system until at least 2005 for homes with aluminum wiring. The COPALUM repair system has benefited tens of thousands of consumers by reducing the risks of dangerous overheating and fire that can be caused by failing aluminum wiring connections. It is estimated that 2 million homes were built with aluminum wire between 1965 and 1973.

Warning signs, such as warm-to-the-touch face plates on outlets or switches, flickering lights, circuits that don't work, or the smell of burning plastics, can indicate a fire hazard within 15- and 20-ampere aluminum wiring circuits. A failure in the circuits can lead to electrical arcing and a serious fire, which can spread within the walls of a home before being detected.

The COPALUM crimp connector, which has been available for more than 20 years, is the only system recognized by CPSC that provides a complete and permanent repair and reduces the fire hazard in aluminum wire circuits. The COPALUM connector system attaches a copper wire to the old aluminum wires and is then crimped together with a power tool, achieving a "cold weld" between the conductors. The "cold weld" creates a permanent bond that eliminates electrical arcing or glowing connections and creates a safer electrical connection at outlets, switches, lights, circuit breakers, and panelboard terminals. The COPALUM connector repair materials and power crimping tools are only available to electricians who receive training from the manufacturer, to ensure that repairs are properly made.

"CPSC appreciates Tyco's commitment to protecting the safety of consumers by continuing to offer COPALUM connectors," said CPSC Chairman Hal Stratton. "Without the Tyco Electronics system, the only method for safely upgrading aluminum wiring systems would be to install new copper circuits, which is often impractical for consumers."

CPSC believes that "twist-on" connectors, receptacles and switches and other devices that connect directly to aluminum wires, are an inadequate solution. The COPALUM crimp connector system provides a safe, permanent fix.

If homeowners are not certain whether their home has aluminum branch circuit wiring, they can look at the markings on the surface of the electric cables which may be visible in unfinished basements, attics or garages. Aluminum wiring will have "Al" or "Aluminum" marked every few feet along the cable. A home inspector or qualified electrician also can assist in identifying aluminum wiring. CPSC advises that consumers should not open the interior of the panelboard or circuit breaker compartment - this can expose live wires and pose an electrocution hazard.

COPALUM connectors are available from Tyco Electronics under the AMP brand. Consumers can check to see if the COPALUM connector system is available in their area by calling the company at (800) 522-6752. To order a list of authorized electricians in their area, consumers can write to: Tyco Electronics Corp., Attn: Aluminum Wire Repair Program, P.O. Box 3608, Harrisburg, PA 17105-3608. If no authorized electrician is currently located nearby, consumers can have an electrician interested in repairing their home contact the nearest supplier of AMP- brand COPALUM connectors for training and other repair information.

For more information about aluminum wiring and the crimp connector system, see Repairing Aluminum Wiring (pdf). Consumers can also obtain a free copy of this booklet by writing to CPSC, Washington, DC 20207.

Click To see the original source of this info

Repairing Aluminum Wiring (PDF)

[ May 15, 2003, 05:43 AM: Message edited by: iwire ]

 

[jro]

Re: Stupid Question

As I stated " With a listed connector". And remember the ground wire is not a current carrying conductor,Art. 310.15 (b) (6),Every problem I have run into concerning AL/COPPER the problem has been with the hot or nuetral wire due to expansion and contraction of the current carrying conductors while going under & off load.