new romex into old metal box I wanted to install another outlet box on the opposite side of this wall. This outlet is 15A and grounded via the metal box and BX cable (verified with GFCI outlet tester before disassembly).
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0 · romex grommet clamp
1 · nm cable for metal box
2 · metal electrical box knockout
3 · metal box knockout removal
4 · how to secure metal box
5 · grommet for romex box
6 · fixing nm cable to metal box
7 · extending nm cable to box
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It is not allowed anymore. The correct fix is to use a 10-32 self-taping ground screw in the solid part of the back of the box. A short 6" pigtail of wire is wrapped around that screw . I have added a light to an existing lighting circuit and pulled #12 Romex into an existing metal box. Problem is, this box has no 1/2" or standard size knockouts. It has only the smaller AC knockouts.
You either need a NM clamp or some sort of plastic grommet to secure the wire. NM clamps are easier to find in most cases. You need 1/2" clamps, but they may be labeled 3/8". Remember to only remove the .
New ROMEX into old boxes. OK so I fished all new Romex for my light circuits replacing the old cloth romex. The existing boxes are metal with (actual diameter 5/8") knockouts and a double clamp. How do you secure new . I replace the existing bx clamp with the kind that comes with a new metal romex box, which presses the romex against the back wall of the box. The problem is with the old boxes . I wanted to install another outlet box on the opposite side of this wall. This outlet is 15A and grounded via the metal box and BX cable (verified with GFCI outlet tester before disassembly).
What is the correct way to connect MC or romex into an old knob & tube box? The boxes are a lot like these: http://electrical.hardwarestore.com/14-45-electrical-boxes-metal/switch-box-239517.aspx , including the dual holes .
The problem is that you should use a connector in the box. A button connector won't work since the 1/2" KO in the box is threaded. A typical metal 2-screw romex squeeze connector works, but it requires a 1-1/2" hole in the .
You always connect the egc (equipment ground wire) of the romex to the box. If the receptacle or switch is the self grounding type and you use it in a proper metal box you .What I can't do, is use one of those old work gang boxes with the little flaps on it, because they don't go back far enough. They might expand to 0.75" and I'm dealing with 1.5". I've seen using Madison straps with metal boxes, but not sure if I can use bare Romex into the metal boxes, as I thought you needed to use conduit.
I ran three 14-2 romex into the attic for the lighting and I ran 2 12-3 romex into the attic for outlets. These needed 2 pole AFCI breakers. They are immediately split up into 12-2 in the attic and routed where they need to go. Two circuits went just to the bathroom, the other two were the outlets for the bedrooms. Sorry for the confusion. Pulling existing wires, ready in wall, stapled to stud from there into a new box only. Not through the walls or through conduit! About 8" run max. Stuffing 3 Romex cables into those dang plastic box flaps . EDIT It seems that only the standard small size of single gang plastic new work box allows the total removal of the flap, right? . Will wax or gel lubricant help in pulling old Romex into box? 0. . Ears less adjustable for 3.5" deep metal boxes vs. 2.75" deep boxes. 0.Plastic is fine most of the time for residential. I prefer metal when cutting boxes into old plaster and lath. The plastic boxes tend to break through the plaster because there isn't enough surface area on the ears. Metal is also better for cabinet/wood installations
romex grommet clamp
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nm cable for metal box
It also prevents the cable from rubbing against the edge of the box and potentially damaging the sheathing. Most plastic boxes have built-in spring tabs that secure the cable as it's pushed into the box. When it comes to metal boxes, there are several different clamping methods you can use, but first, you have to remove a knockout in the box. My house has mostly AC/BX wiring. I have added a light to an existing lighting circuit and pulled #12 Romex into an existing metal box. Problem is, this box has no 1/2" or standard size knockouts. It has only the smaller AC knockouts. I need a snap-in cable clamp to properly ensure my non-metallic insulation doesn't get cut on the metla box .Which cable clamps are the right ones for old, installed metal boxes that only have a circular opening? Previously they had K&T wires and strain relief was implemented by pushing some sort of small metal plate together with the cable. I know re-wired Romex and would need to clamp them properly. Thanks!I'm attempting to install new wall sconces, and the plan is to run 14/2 romex from outlets directly below where the sconces will be up to junction boxes on the wall. It's a finished wall, so I need to use old work boxes that'll just cling to the drywall instead of a stud.
I am mounting this Carlon 1-gang junction box to my exposed basement walls (block foundation) via tapcon screws.. I will be running 12/2 Romex into the box (this will be an outlet in my basement). Although the Romex will chew up more than half the available area of the knockout, there will still be "open space" between the walls of the knockout and the Romex where .
Also, I've never seen metal boxes mounted onto studs, they are usually surface mounted onto the wall. Could I run MC into new-work plastic outlet boxes? I guess not, they seem to be designed to accept Romex, so not sure how I would transition from MC to the box. A third solution would be to run flex tubing and use THHN wire inside of it.Dafuq you using metal clamps for? Rc50 and rc75 are the bomb! Some call them assholes, I know them as buttholes. Romex connector 1/2” or romex connector 3/4”. The black ones from the supply company are better than the gray ones at the box store.
I plan on running a 12/3 romex cable to the basement junction box. On the kitchen side, I was going to run the romex into a metal box where I'll place a 20A outlet. I was not planning on using any conduit, just simply running the romex directly from the junction box to the outlet.
About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright .The boxes sold in my local big box store are MC/BX and NM specific, but the only real difference that I can tell is that the clamps on the MC/BX ones have a metal stop/hole to prevent the metal sheathing from getting into the box, presumably to stop it from potentially cutting the insulation when you're bending the wires around.The box would protrude from the drywall several inches, so I can easily add holes and run conduit as needed, as well as pull wire in from the sub panel. But the ideal location for the box would mean some romex I have run for light switches and outlets would run behind it on the outside and likely touch the box.
Power runs from the box in the basement into the main switch on the right (inside the metal box). 14 gauge Romex running down from that switch (red arrow) is my light circuit, and outlets are all on that 12 gauge Romex (blue arrow). . (blue arrow). The main switch kills both. I switched out the old 2-gang box for a 3-gang, ran the new light .Should I also use a metal box for the lamp I want to add? Also, when I add the handy box, can I splice off the existing wire to add the power supply for the new lamp? If I did this, I think I'd have have 4 ground wires connected to one wire nut. 1 to ground the hand box, 2 to connect the wire I need to cut, and 1 spliced off to the new power .
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In this case, the Romex grounding wire was screwed directly to the box - is that safe grounding? I have also seen a metal BX tubing pulled into a plastic box in the "crawlspace" (It's more for a crouching space, 5ft tall and half finished) and the wires leaving the plastic box are Romex and the grounding wires in the Romex are pulled through .
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We added a bathroom fan and I want it to always be on with the light, however the light is a sconce on the wall. Source electric goes from the attic down to a 3-way and I believe it feeds horizontally into the sconce box. So... I was able to get the new romex in from the attic but I need to secure it with a clamp.the carpenter and electrician collaborated to create a box inside the upper shelf space to house the junction box and cover the romex coming in from the stud wall. a few scraps of plywood and some finishing nails later. no exposed romex or junction box and mostly usable top shelf space.
When working in the back of those gang of a boxes, it's useful to use a 6-in extension with the combination drill tap, along with some cutting oil. I usually use the aerosol style CRC cutting oil in the blue can. Some of those old steel boxes are some fairly tough steel, The cutting oils help make it go a lot easier and prolong the life of the . Does metal j-box need to be grounded. Jump to Latest . thats why the plan was to put the j-box over the hole in drywall and use a knockout on the rear of the j-box to get the romex into box. . and could be reviving an old thread. Please consider creating a new thread.
"In the case of old steel-clad armored cable (BX), it's still legal to use the metal shield as a ground . If you must, make sure the BX connector has a screw or some type of clamp that really bites into the metal of the shield, and that the connector is very securely tightened against the side of a metal box with the lock ring. Ground to the box. Your best bet here is to replace the receptacle with a self-grounding type, throwing away the improper neutral-ground "bootleg" jumper in the process, and then land the NM ground wire on a 10-32 screw into the ground screw hole in the back of the box. That way, everything should be grounded through the FMC, provided the FMC itself is grounded.Replacing old MX with Romex in a metal box, so would be putting it on after Romex is ran and cut. Could use the regular version, but figure you want the Romex to not be able to go into box. imgur.com Open
metal electrical box knockout
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new romex into old metal box|nm cable for metal box