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Questions tagged [aluminum-wiring]

Aluminum wires were used for branch circuits in some older houses between the 60s and the late 70s. They are no longer used for residential branch-circuit wiring due to fire risk (old AA-1350) and economic (AA-8000) considerations, but existing wires can be maintained in a way that makes them relatively safe. AA-8000 wire and cable will be marked as such -- cable not marked as such can be assumed to be AA-1350.

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9
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1answer
980 views

How to electrically ground a gas furnace connected with an armoured cable

My gas furnace will not turn on. I verified 120V where the armoured cable enters the furance, so I was going to continue testing for voltage before and after the transformer (with the door safety ...
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2answers
135 views

Aluminum wiring with dark discolouration on outside

We are in the process of doing renovations on a home which was built in the early 70s in Toronto. The home has aluminum wiring in most places except the basement which was completed later. When some ...
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Correct torque settings for Polaris connectors

I am connecting 6 awg aluminum wires and 10 awg copper wires with a Polaris connector for my new cooktop. What are the correct torque settings?
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3answers
121 views

10/3 Aluminum 20A with multiple electrical circuits? What is correct wiring?

I have a house built in 1971 (EQ Load Center - 200 amp service panel) that is all aluminum wiring and I remodeling the kitchen. The existing wiring is technically working but questionable. We have ...
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3answers
59 views

pigtailed aluminum replacing regular receptacle to GFI

Need to replace a receptacle closest to panel that has a light and another receptacle inline. All are aluminum. They have alumiconns on them (purple) pigtailed. Need to replace sink receptacle with ...
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1answer
97 views

Is aluminum wiring the cause of this strange electrical activity?

My house is old and built in the 50’s so the house was made with aluminum wiring. we’ve had a few houses catch in the neighborhood and lately we’ve been having weird stuff happening. First the stove ...
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2answers
241 views

Black wire crossed with white in box

I was helping my dad install Alumiconn pigtails in his home when I spotted something weird in a 1-gang outlet box: a black wire shorted with a white wire. Alarm bells went off in my head, so I spent ...
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2answers
172 views

CO/ALR Outlet Wire Mount Screw Torque

When installing a CO/ALR outlet is there a recommended torque specification for the mounting screws? Unfortunately, I have some aluminum wiring in my home.
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3answers
3k views

Connecting 6 gauge aluminum wiring to 10 gauge copper with AlumiConn

I am replacing a 20 year old wall oven. When I opened the electrical box I noticed very large gauge aluminum wiring (6 gauge?). I purchased a box of AlumiConns (3 port style) to connect the aluminum ...
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1answer
169 views

Is it okay to reuse Alumiconn connectors?

After having redone the aluminum-to-copper pigtails in my house's electrical outlets using AlumiConn connectors, I subsequently had to undo a few to debug a wiring problem. All I did is unscrew the ...
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1answer
423 views

How to handle 4 wires using 3-port AlumiConn connectors?

I'm rewiring outlets and switches in our 1960's California home using AlumiConn connectors to connect the aluminum wiring to copper pigtails. Most cases are straightforward, but I've run into a case ...
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1answer
681 views

Confused about CO/ALR devices versus AlumiConn and Copalum

Our 1960's house in California has aluminum wiring. When we bought it 15 years ago, I wanted the nicer Lutron receptacles and light switches, so I rewired all the outlets and switches using twist ...
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How can I reliable crimp aluminum ferrules without a specialized tool?

Is there another way to crimp aluminum sleeves without having to buy a $40+ crimping tool that I will only use for this one project? Or at least is there a crimping tool that has another use? I don'...
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reuse hot tub wiring for an EVSE?

I need to install a 240V 40A circuit into my garage. The end goal is to plug in a level 2 EVSE. (maybe it can be a 50A circuit? not sure). I have an existing 50A GFCI breaker hooked up to 6 gauge 3 ...
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106 views

Alumium Wiring in Charlotte, NC [duplicate]

My son just bought a house in Charlotte, NC which was built in the 1960's. Is Aluminum Wiring and Pig tailing acceptable to Code in Charlotte, NC?
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1answer
135 views

Are the risks of aluminum wiring reduced with higher-efficiency fixtures?

As you can see from my post history, I am blessed with a lovely home with aluminum wiring. I am also taking steps on every project to review and mitigate the risks of aluminum wiring by using proper ...
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2answers
1k views

Trenching and running power to detached garage about 135 feet away

Location: Wisconsin I am having the electric company transition my wiring from overhead to underground, upgrade my service (it might only be 60amp right now) to 200amp, having another company replace ...
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1answer
287 views

What is the right way to join aluminum house wiring to aluminum fixture wiring? [duplicate]

My home is 1970s construction with aluminum wiring. I have recently upgraded several fixtures in my bathroom and basement. These fixtures have all been internally wired with stranded aluminum wiring. ...
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1answer
4k views

Aluminium + copper wire

Can I twist copper on legacy aluminium wire using regular wire nuts or do I need to procure aluminium wire? The wires coming into my switch box are too short and I would need to extend them.
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1answer
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Seeking good method to locate short on buried AC power cable

We have experienced a failure or short in one leg of a buried 3 wire 2.0-gauge aluminum cable that runs 150’ from our house to a detached garage (2 hots and a neutral, no ground -USE-2 RHH 60 MIL XLP)....
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1answer
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How to wire GFCI outlet to aluminum wiring? [duplicate]

How to wire gfci to aluminum wiring. Have not tried to yet, i want to be sure as to how first. I've been told of using no-ox and 6" copper pig tails.
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1answer
2k views

Pig-tailing 1970 aluminum wiring, choices of type of copper pig-tail

I intend to use 14 AWG copper pigtails for the receptacles in the 15-A circuits because #14 folds into the boxes so much easier than #12. The AlumiConn connectors take up more room than the Scotchlok ...
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1answer
1k views

Can I transition from aluminum wiring to copper wiring at a CO/ALR receptacle?

It is my understanding that outlets can have wires connected on both sides. Example from another DIY.SE question here . If I have aluminum wiring. I want to add another downstream outlet. I will use ...
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1answer
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How well does AA-8000 alloy resist pitting corrosion?

Aluminum corrosion in salty environments often takes the form of a surface pitting -- while this does little to damage the structural value of the aluminium, it can be an issue for mating contexts. ...
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4answers
221 views

What safety/testing measure should I take for this whole-house electrical project?

I have a house built in the 70s with aluminum wiring. I am well aware of the specific risks and needs when working with this wiring in my home. There was work done in the house by the previous owner ...
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1answer
554 views

Leads from wall fan control switch are aluminum wire?

My new house in the US has a Harbor Breeze combination fan/light switch with a remote control as seen here (different brand is shown, but it's basically identical). While checking some wiring (...
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6answers
139k views

Can I connect copper wire to aluminum wire?

I'm installing additional light bulbs in my basement. I have an older house with aluminum wiring. Can I do this: [new light bulbs]<--copper-->[old light bulb junction box]<--aluminum-->[main ...
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1answer
1k views

Should I have a 15 amp breaker instead of a 20 due to aluminum wire?

I've been digging into an addition to my house from the early 1970s (final permit signature dated 1973). It uses individual wires in flexible conduit from the panel through the crawl space, and NM in ...
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0answers
308 views

Neutral wire of 3 phase system

I have a three phase system with 3 wires coming from the pole. All are green color #6 and one of them has a white tape on it. My question is if this wire acts as hot and neutral wire of a Delta system?...
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2answers
3k views

Can I use a copper ground with aluminum hot and neutral?

I want to put in two pedestal lamps at the beginning of my driveway, as well as a weatherproof outlet box. The total run from the outside panel is 30 ft. I want at least 30 amperes at the box. ...
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1answer
4k views

Receptacle connection with aluminum wiring?

I recently purchased a home that has some aluminum wiring. The previous owner decided to "upgrade" the receptacles to make it "safer" for me and my family; these changes were made after the general ...
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3answers
36k views

Should we be rewiring or pigtailing the aluminum wiring in our condo?

We have purchased a condo home that was built in 1975. The inspector brought up the hazards of aluminum wiring. Since we have very little knowledge regarding this area we were wondering if we should ...
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3answers
10k views

What are my options to repair a broken tab on a bus bar?

My A/C went out this week. The problem was a broken tab on a bus bar with cut power to one phase of the 220v circuit. My HVAC guy was able to get me going again by swapping the A/C unit to the dryers ...
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1answer
1k views

Is there aluminum wiring in my vent fan?

I just purchased and installed a new Panasonic FV-10NLF1 inline exhaust fan. My house has copper wiring, but the wires on the fan appear to be aluminum (they are silver in color). I didn't think ...
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10answers
65k views

What's the best way of replacing a plug or switch in a house with aluminum wiring?

My house has aluminum wiring, which from what I understand isn't recommended any more. How do I replace a plug or switch since the new unit only takes copper wiring?