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They can as they will support the wire into the box. The deciding factor should be the cost. A BX connector costs about four times the price of a romex connector. Also to keep in mind is that most junction boxes these days have their own built in clamps.
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Was silver ever used in bx wire?
No, silver was never used in BX cable.
Is the outer sheath on BX cable an adequate ground path?
It used to be, but now the ground wire (which replaced the aluminum strip) in the BX cable is used. The ground wire is now used to complete the grounding of connected devices rather that the sheath of the BX.
What is a BX connector?
A BX connector is a special type of box connector used for securing a BX cable to a junction box. BX is a type of armoured cable that is used for specific locations where ordinary Romex cable could become damaged. Before the connector is installed onto the BX cable there is a small PVC collar to be installed. In the trade it is called an anti short. It slides between the outer sheath of the BX and the conductors inside the sheath. It adds protection for the inner conductors from rubbing against the outer sheath if any vibration is involved in the installation. There is usually a small hole in the BX connector and the red anti short can be seen through this hole. This makes it easy for the electrical inspector to see if the anti short bushing has been installed during an inspection, and they do check.
How do you you change a two wire recepial without a ground to a two wire with a ground?
Shut the power off to the recepticle. Then take apart the old outlet. Wire up the new outlet. The only difference between the old and the new will be the grounding. If BX armour cable is used, then you will need to take a jumper wire from the grounding nut on the outlet and connect it to the box with a grounding screw. This wire must be green. If romex has been used, then there is a gounding wire that is in the bundle of the wires coming into the box. If it a metal box, then you must use a grounding screw and ground that wire to the boc and then connect that same wire to the outlet. If its a plastic box, then just wire the ground to the outlet. I also like to wrap the outlet in electrical tape, just incase the the wires were to come loose, they would note hit against the box shorting out. Finally, put the pieces back together. And your DONE!
What to do with ground wire in wall when wiring metal light fixture without ground wire into plastic outlet box with ground wire Basically wall has 3 wires fixture has 2 and no place to ground to?
Don't worry about it some fixtures have no ground terminals. just shove the groung wire to the back of the box. Correction, if the fixture is metal and it shorts out, the metal surrounding the fixture could become electrified. That's why fixtures today are normally grounded to their mounting plates and then the lead is attached to the incoming romex. In the past, attaching these plates to metal boxes (either grounded by an incoming wire or grounded to the BX cable) eliminated the need for a ground wire. If the hot wire hit or shorted to the fixture, it would blow a fuse or circuit breaker. Many electrocutions and fires later, the folks at Underwriters realized that even that method of grounding wasn't sufficent (the old aluminum boxes and bx cables were crappy conductors. Solution; (and I practice what I preach because I remodel many old homes) get a little creative and spend the extra time to wrap a little ground wire to a mounting screw, or piece of metal, on the mounting plate of the fixture and then attach it to your incoming romex ground. On an old fixture, it could mean the difference between a fire and a tripped circuit breaker. If you have any metal boxes, old or new, ground to those too. <><><> Connect a pigtail to the metal canopy, and use a wire nut to connect the safety ground to it.
Was silver ever used in bx wire?
No, silver was never used in BX cable.
Is the outer sheath on BX cable an adequate ground path?
It used to be, but now the ground wire (which replaced the aluminum strip) in the BX cable is used. The ground wire is now used to complete the grounding of connected devices rather that the sheath of the BX.
What is a BX connector?
A BX connector is a special type of box connector used for securing a BX cable to a junction box. BX is a type of armoured cable that is used for specific locations where ordinary Romex cable could become damaged. Before the connector is installed onto the BX cable there is a small PVC collar to be installed. In the trade it is called an anti short. It slides between the outer sheath of the BX and the conductors inside the sheath. It adds protection for the inner conductors from rubbing against the outer sheath if any vibration is involved in the installation. There is usually a small hole in the BX connector and the red anti short can be seen through this hole. This makes it easy for the electrical inspector to see if the anti short bushing has been installed during an inspection, and they do check.
When armored cable is used what protection is provided at the cable end?
these little devices are generally called connectors when you cut the armor it leaves some burs so there a little fiber bushing you slip under the armor and over the wire before putting in into the connector and into the box rome cable company had a armored cable they called BX which kinda stuck the generic term is MC for metal clad MC Cable Connectors <<>> These little red bushings that come with rolls of BX cable are called anti-shorts. <<>> the little bushings are also called redheads
How do you you change a two wire recepial without a ground to a two wire with a ground?
Shut the power off to the recepticle. Then take apart the old outlet. Wire up the new outlet. The only difference between the old and the new will be the grounding. If BX armour cable is used, then you will need to take a jumper wire from the grounding nut on the outlet and connect it to the box with a grounding screw. This wire must be green. If romex has been used, then there is a gounding wire that is in the bundle of the wires coming into the box. If it a metal box, then you must use a grounding screw and ground that wire to the boc and then connect that same wire to the outlet. If its a plastic box, then just wire the ground to the outlet. I also like to wrap the outlet in electrical tape, just incase the the wires were to come loose, they would note hit against the box shorting out. Finally, put the pieces back together. And your DONE!
What kind of wiring would be encased in a corrugated metal tubing under an electric cook top We want to rip it and cupboards out below and put in a freestanding electric oven?
This is BX cable also considered AC cable. It is sheathed in either aluminum or steel sheath. It was used years ago to wire most homes but has been replaced by Romex. Here's a great blurb that I found. . http://www.faqs.org/faqs/electrical-wiring/part2/section-5.html
What to do with ground wire in wall when wiring metal light fixture without ground wire into plastic outlet box with ground wire Basically wall has 3 wires fixture has 2 and no place to ground to?
Don't worry about it some fixtures have no ground terminals. just shove the groung wire to the back of the box. Correction, if the fixture is metal and it shorts out, the metal surrounding the fixture could become electrified. That's why fixtures today are normally grounded to their mounting plates and then the lead is attached to the incoming romex. In the past, attaching these plates to metal boxes (either grounded by an incoming wire or grounded to the BX cable) eliminated the need for a ground wire. If the hot wire hit or shorted to the fixture, it would blow a fuse or circuit breaker. Many electrocutions and fires later, the folks at Underwriters realized that even that method of grounding wasn't sufficent (the old aluminum boxes and bx cables were crappy conductors. Solution; (and I practice what I preach because I remodel many old homes) get a little creative and spend the extra time to wrap a little ground wire to a mounting screw, or piece of metal, on the mounting plate of the fixture and then attach it to your incoming romex ground. On an old fixture, it could mean the difference between a fire and a tripped circuit breaker. If you have any metal boxes, old or new, ground to those too. <><><> Connect a pigtail to the metal canopy, and use a wire nut to connect the safety ground to it.
How do you glue bx cable to steel beam?
You don't glue BX cable to steel. If it has to go on a beam, you usually hold it on with plastic 'tie wraps'. --------------------------------------------------------------------- Wire ties are not recommended for mounting armored bx cables to steel beams. Wire ties are normally used for bundling wires together to keep them neat, though some glue on cabinet tabs are made to mount wires inside control cabinets. These are not meant for external wire mounting. Cast aluminum clamps are made that hold the bx cable to the beam. a hole must be drilled in the beam to mount the clamps with screws, OR specially made mounting clamps (similar to c-clamps can be mounted to the edge of the beam, then the clamps mounted to those. It is recommended there be no less than one clamp every 6 feet (~2 meters).
What does bx stand for in bx cable?
Bronx
Write a program to subtract two 16 bit numbers in microprocessor 8086?
.code main proc mov ax,@data mov ds,ax lea dx,msg ;printing msg mov ah,09h int 21h mov ax,x ;ax=x mov bx,y ;bx=y cmp ax,0 ;jump to l3 if ax is negtive jb l3 cmp bx,0 ;jump to l6 if bx is negative jb l6 cmp ax,bx ;if ax<bx,then jump to l1 jl l1 sub ax,bx ;else normal sub mov diff,ax ;diff=result is stored jmp l2 l1: ;iff (+)ax<(+)bx neg bx ;bx=-bx clc add ax,bx neg ax ;-ans=ans mov diff,ax mov dx,2dh ;print '-' mov ah,02h int 21h jmp l2 l3: ;iff (-)ax neg ax ;-ax=ax cmp bx,0 ;jump to l4 if bx is negative jb l4 clc add ax,bx ;ax=(+)ax+(+)bx mov ax,diff mov dx,2dh ;print '-' mov ah,02h int 21h jmp l2 l4: ;if (-)ax & (-)bx neg bx ;-bx=bx cmp ax,bx ;if ax>bx then jump to l5 jg l5 sub ax,bx ;else ax-bx mov diff,ax mov dx,2dh ;print '-' mov ah,02h int 21h jmp l3 l5: ;if(-)ax>(-)bx xchg ax,bx ;exchange ax and bx sub ax,bx ;ax-bx mov diff,ax ;ans is positive jmp l2 l6: ;iff (-)bx neg bx ;-bx=bx add ax,bx ;ax-(-)bx mov diff,ax ;ans will be positive mov ah,4ch int 21h main endp
Program to subtract two 8 bit numbers using 8086 microprocessor?
I have a code for 16 bit subtraction.. just replace ax by al,bx by bl etc... .code main proc mov ax,@data mov ds,ax lea dx,msg ;printing msg mov ah,09h int 21h mov ax,x ;ax=x(any number) mov bx,y ;bx=y( " ") cmp ax,0 ;jump to l3 if ax is negtive jb l3 cmp bx,0 ;jump to l6 if bx is negative jb l6 cmp ax,bx ;if ax<bx,then jump to l1 jl l1 sub ax,bx ;else normal sub mov diff,ax ;diff=result is stored jmp l2 l1: ;iff (+)ax<(+)bx neg bx ;bx=-bx clc add ax,bx neg ax ;-ans=ans mov diff,ax mov dx,2dh ;print '-' mov ah,02h int 21h jmp l2 l3: ;iff (-)ax neg ax ;-ax=ax cmp bx,0 ;jump to l4 if bx is negative jb l4 clc add ax,bx ;ax=(+)ax+(+)bx mov ax,diff mov dx,2dh ;print '-' mov ah,02h int 21h jmp l2 l4: ;if (-)ax & (-)bx neg bx ;-bx=bx cmp ax,bx ;if ax>bx then jump to l5 jg l5 sub ax,bx ;else ax-bx mov diff,ax mov dx,2dh ;print '-' mov ah,02h int 21h jmp l3 l5: ;if(-)ax>(-)bx xchg ax,bx ;exchange ax and bx sub ax,bx ;ax-bx mov diff,ax ;ans is positive jmp l2 l6: ;iff (-)bx neg bx ;-bx=bx add ax,bx ;ax-(-)bx mov diff,ax ;ans will be positive mov ah,4ch int 21h main endp
Can the ground wire from two separate circuits (one 20-amp one 15 amp) be shared?
There wasn't room for more details: I know they're shared on the bus bar. I meant to ask if they can be connected in the junction box? I found a jct box with the two circuits. They are completely separate except for the grounding conductor/ground wire, which are connected. This is because the 15-amp has armored BX and junctions with 14-2 romex, so the ground for the romex connects with the ground for the 12-2/20-amp. Thanks.
