How to install an attic fan video.
Bx wire for attic.
Working on a new york cottage built along wappingers creek in the 1920 s i saw that nobody had been into the attic crawl space in decades.
We illustrate a variety of types of electrical wiring found in older buildings.
Use a metal electrical box when metal sheathed cable also called armored bx cable or metal conduit is running in or out of the box.
The attic wiring should be protected and secured to ceiling joists or other wood structural supports.
There was not even an access hatch.
Bx s metal sheathing runs in a helix like or twisted manner around the wires.
Bx is also known as armor clad or flexible metal conduit cable.
If you come across a wire or romex cable that nee.
This video shows how to install an attic fan to help keep your home cooler.
Untwist the cable and staple it at least every 4 ft.
Also use metal boxes with interior exposed applications.
Abandoned wires case 2.
Wire rats in the attic.
Since insulation is combustible you must install face plates on all attic junction boxes to prevent contact between bare wires and insulation materials.
While varying somewhat by area of the country in the u s latin america europe and other areas there are recognizable generations of electrical wiring knob tube greenfield armored cable or bx wiring plastic or nm.
Going under alternative names such as metallic sheathed cable type ac mc greenfield or armored cable bx cable is a collection of plastic coated insulated wires typically 14 or 12 gauge bundled together and protected by a ribbon like metal sheathing.
To the framing all the way to the next box without cutting it to length.
About your bx wire there were several generations of bx and greenfield flexible armored cable.
The magnetic field strength drops very quickly with distance from the nm cable.
You can attach them to the joist s side surface called the face or to the.
Metal cable and conduit depend on the contact from its metal sheathing to the metal box to complete grounding.
Understanding these temperature ratings and matching the intent of the building code should be attempted only by a licensed electrician on a case by case basis but the electricians i ve consulted agree that it s safe under normal conditions to bury older bx cable in cellulose insulation in an attic.
Of sheathing through the wire opening in the box.
Yes this should be corrected and it would be good to have the wiring and all the circuit connections inspected as well.
Bx contains one or more individually insulated hot conductors one individually insulated neutral conductor and a ground wire which may or may not be individually insulated.
To run a cable from one box to another pull cable off the coil strip at least 8 in.
Of sheathing off the wires and thread the wires and about 1 2 in.
What are bx cable and wire.
