Questions tagged [conduit]

Electrical conduit is used to protect electrical wires, when a simple jacket alone is not enough. Conduit may be metal or plastic (PVC). Use with the [electrical] tag.

Filter by
Sorted by
Tagged with
1
vote
1answer
34 views

Type of conduit box to use for a Ring doorbell + keyed entry

I have a powered gate at the front of my property and its well overdue to replace/upgrade the intercom system. I would like to install a ring doorbell system and a keyswitch to open the gate. The ...
6
votes
4answers
51k views

How many CAT6 cables can fit in 3/4 conduit?

I was planning to get 3/4" conduit (Carlon ENT/Smurftube) to run network cables through the house. Just how many CAT6 cables can safely fit into 3/4" conduit?
1
vote
3answers
2k views

How big a hole can I drill in a top plate?

I've got a 2nd story home theater room under construction. The framing has been done, but I'm going to be doing the wiring myself. I want to pass some conduit up into the attic space over the room for ...
0
votes
2answers
55 views

Can I use standard electrical cable from a waterproof junction box when replacing an exterior light

I am replacing a faulty exterior light with a waterproof (IP66) LED one with a PIR sensor. There is an existing conduit through the wall, but it is a thick stone wall of an outbuilding and the ...
2
votes
3answers
3k views

Using receptacle mounting screws for ground connection

I will soon be adding some outdoor wiring using weatherproof metal boxes and EMT conduit. I noticed when I was playing around with a multimeter that without a ground conductor between a receptacle and ...
1
vote
1answer
547 views

Running wires through conduit on outside of house to feed garage sub panel

My electrical panel is in the basement on the west end of the house and my garage is on the east end. I had planned to run a 6/3NM-B cable along the joists and through the rim joist to get into my ...
4
votes
2answers
5k views

Cable securing/support, conduit, etc when exiting main service panel: questions

I'm totally confused by this. Looking for any help that anyone can provide. I've attached a photo of the top of my recently-installed (inspection passed) service panel. The top of the panel sits ...
4
votes
2answers
1k views

Wiring up a shop with underground conduit

I am wiring a 36' x45'shop that will store my RV and other equipment. I have 200 amp service already in. I want to put utilities in under the concrete pad before I have it poured. I would like to ...
1
vote
4answers
463 views

Can I remove the sheathing from cable just where it passes through conduit?

I am adding an outlet in my unfinished basement from a cable that will run from the ceiling down a corner of the room. I was going to just attach the cable to the studs but I would like to protect the ...
4
votes
4answers
7k views

What's the correct way to pass wire to exterior electrical box?

I'm doing some remodeling in our basement, and came across the following (see pictures). It looks like the contractor simply wrapped tape around the conduit to secure the box to the wall. How are ...
1
vote
3answers
117 views

How do you keep bugs/dust out of electrical conduit which terminates in the open?

Though it isn't specifically stated in the code, I try to protect cable that is installed less than 8 feet from the ground with conduit. This tends to be accepted by inspectors as "protection from ...
0
votes
2answers
75 views

Seal a 1in drilled hole in concrete block

I need to drill a 1 inch hole in a basement foundation block wall to pass a 1/2 emt conduit through. How do I seal the gap afterwards to pass inspection, prevent mice, insects, rain and drafts. ...
1
vote
1answer
2k views

125amp feed from garage to house, required wire size, PLUS a separate 3-way light switch

I recently built a detached garage with its own 200amp service. I made provisions to run a 125amp feeder from the garage to an addition we are now building on the house. My questions are: What size ...
0
votes
2answers
214 views

Can I close emt ell in wall?

I know that it will be difficult to impossible to fish anything through it later, but can I close up emt in the wall with a 90-degree ell (uncurved)? It's easier for me to use rigid conduit for this ...
1
vote
0answers
219 views

Electrical code - Conduit requirements for 50A copper cable through outside wall

Can anyone advise what (if any) sized conduit one has to use per code to have a 50A copper cable run from inside through an outside, concrete, wall? I live in Maryland, USA, if that is helpful. Would ...
0
votes
2answers
228 views

What type and size conduit should I use for my service entrance cable?

I am running my aluminum service entrance cable from the main panel to a sub panel in my garage. It runs from the garage under the house then out the wall, makes a 90 degree turn to go into my side of ...
2
votes
1answer
85 views

Old-style electrical conduit connector?

See photos. I'm having trouble finding this on the internet. Looks like it's some kind of compression connector for EMT conduit, with dimples. The conduit is 3/4" What is this style of connector ...
2
votes
1answer
313 views

Can conduit just be left laying on the ground?

My contractor ran a 220V line from a box in our garage, through the rear wall of the house, to the rear kitchen wall to power the microwave and oven. Although the wires are encased in a PVC conduit, ...
0
votes
1answer
84 views

Is the blue conduit connected to my sub-panel suitable for a 50A branch circuit?

I have to add a 50 amp circuit to the sub panel in my garage. I found one of the open knockouts in the top of the panel to have a blue flexible conduit looking stuff in it which runs up into the ...
1
vote
3answers
738 views

What tools do I need to cut flexible metallic conduit?

I need to cut 3/8" flexible metallic conduit and am looking for suggestions on how to cut it (i.e. Conduit Tubing cutter, hacksaw). How do you smooth the edges that were just cut? I have a 7 foot ...
0
votes
2answers
1k views

Hanging EMT conduit exterior to home

How high does exposed EMT have to be from ground running down side of home?
1
vote
1answer
377 views

Is it within code to run ent conduit into a junction box on the exterior of the home?

I am in the construction process for a new home. I asked the Low Voltage Contractor to run conduit to about 13 places inside the house. In addition to that I asked for a run to the exterior of the ...
2
votes
1answer
116 views

Gap in conduit running to electric meter

There's a gap in the conduit running from underground to my electric meter. I'm sure that's a problem, since weather could get in. It appears to be PVC. The question is: Can I service this myself, ...
1
vote
3answers
315 views

Using conduit from ceiling to wall for closet switch?

We're adding a wall to separate a garage and want to put outlets and a light switch in the wall but it was installed aligned with a steel beam above it so there is no way to fish a wire down into the ...
0
votes
2answers
76 views

how to run conduit past/over wide stone foundation

I'm planning to run 1" conduit to power an outdoor sauna. In digging the trench, I discovered that my old stone foundation runs outwards from the house. That is, while the inside cellar wall is ...
1
vote
2answers
2k views

Does PVC conduit need a termination bushing at a service panel?

I'm installing a panel with the feed conductors entering via 1-1/2" PVC. Is an end bushing, as shown here (for example), required by the U.S. NEC for PVC? image source
1
vote
1answer
64 views

Individual conduits for each phase to reduce amount of stud being drilled

I'm trying to do some improvements on an existing structure that leaves me little room for maneuvering. I'll break it down as simply as possible. I have two large PVC junction boxes (completely ...
2
votes
1answer
460 views

Gap (2") between PVC conduit and exposed foundation (exterior)

I can't figure out how to get a good photo of this setup, so I'll try to describe as best I can. I'm moving/replacing the existing overhead electric cable that runs between the main house and the ...
0
votes
1answer
133 views

Find The Other End of Service Conduit

On our property we have a main house and an 800 sqr foot detached "guest house". To the right of the entrance to the guest house is the electrical service / meter. The wires for the electrical service ...
3
votes
2answers
554 views

Relabeling 6-AWG Wire

I'm pulling 2 hots, 1 neutral and 1 ground through conduit to a subpanel and I was wondering if it's possible to use the same color wire and just relabel the endings. I was thinking of using 6 AWG ...
2
votes
2answers
39 views

Metal or PVC Conduit in Metal Outbuilding?

I'm running wiring under ground from main panel to 100 amp panel in metal garage. When installing lighting and receptacle circuits mounted against interior walls, does it make any difference what ...
1
vote
3answers
668 views

How to splice into existing underground rigid metal conduit below ground and hide junction box?

I have an existing rigid metal conduit run from the service panel to a junction box location that was previously powering an outdoor appliance. The circuit is 20A and running 12 guage wire. The RMC ...
0
votes
1answer
303 views

Attaching conduit to fence

Can I attach pvc conduit to an existing chain link I am installing a storage shed and I don’t want to dig a ditch
0
votes
1answer
147 views

Running AC/MC cable in boiler room, do I need additional metal conduit?

I'm planning to run AC cable (or MC, not sure which is better) in my basement to install an outlet near the boiler room. the cable that powers the boiler has sections that are inside of a rigid metal ...
1
vote
2answers
87 views

Mixing PVC Conduit Schedules

I grabbed sched 80 heavy wall PVC conduit for my run to the shed, but later noticed the elbows are sched 40. Is it legal to use them together (mixed in the same conduit run) in the trench or anywhere ...
0
votes
3answers
680 views

EMT Conduit Capacity with Mixed Guage

I want to pull two circuits through 1/2" EMT. Three of the wires would be 12AWG and other three 10AWG. I've found a couple of tables that say I can run 5 10AWG or 9 12AWG. Is my mixed gauge set safe? ...
0
votes
1answer
517 views

PVC conduit into PVC box: Can I make it watertight when using a threaded fitting? Are sealing locknuts allowed?

I have some 2" PVC conduit coming out of the ground and into a PVC box where it enters with a terminal adapter and held in place with a locknut. I intended to use a sealing locknut to keep the box ...
1
vote
4answers
79 views

EMT Conduit Strapping to a Narrow Joist

I going to run 1/2" EMT conduit on the bottom of a joist. The standard straps I have are too wide to get both nails/screws in. I would prefer to run the conduit down the center of the joist. I wouldn'...
2
votes
1answer
93 views

Run 6 AWG NM-B cable through 1 1/2 PVC pipe indoors

I am running a 6/2 NM-B Romex for approx. 45 feet from my service panel to my garage for a wall charger for an EV. No unfinished space in basement and and garage wall is on concrete slab of garage, so ...
1
vote
1answer
668 views

Narrow conduit with 90 degree elbow - three thhn wires

Currently the narrow conduit (1 inch outside, so inside maybe 3/4 inch) has 2 wires (hot and hot switched). I want to include one neutral so I can change to a light switch outlet combo. It is an old (...
1
vote
1answer
1k views

Code compliance - how do I pass EMT conduit through an interior wall?

I live in Fairfax, Virginia. I need to know how to pass 1/2 inch EMT conduit through an interior wall while complying with code. In more detail, I have a subpanel in an attached garage. From that ...
1
vote
2answers
161 views

Narrow conduit (old building), need to run 2xhots, 1xneutral

Currently I have two wires running through the conduit: one hot (coming from box), and one hot switched (on/off according to light switch). I would like to convert it to an outlet switch combo (one ...
1
vote
1answer
48 views

how to replace surface conduit for a two-wire lighting circuit?

I have an old house with unswitched knob-and-tube running to a ceiling fixture. Previous owners ran surface conduit to a wall switch and to a second light fixture over the sink; none of this was ...
1
vote
1answer
47 views

Outlet to conduit junction recommendations

I've got a recessed outlet box on the outside of my house. To be more specific the outlet (when removing the weatherproof cover assembly) is flush with the stucco. I need to decommission this as an ...
3
votes
1answer
241 views

How to install drywall over electrical box connected to rigid conduit?

I'm trying to figure out how drywall is supposed to be cut out to go around preexisting electrical boxes that are attached with rigid metal conduit. The conduit is the ground path. My dilemma is if I ...
0
votes
2answers
2k views

THHN versus NM for conduit wiring?

I am wiring a small workshop, using conduit. I was shocked to see how expensive THHN/THHW cable is, with respect to NM-B: at local big-box store, 100ft of 14/2 NM was $33, whereas 100ft of THHN was ...
1
vote
2answers
72 views

How to connect steel posts to build a shelf unit?

The posts or conduit needs to be galvanized as I'm using this for growing herbs. Im not sure if I would have to get this welded or if theres a simpler way to put something like this together. (...
0
votes
0answers
34 views

Repairing earth link to conduit

The wiring in my property uses the conduit as the earth. I've checked the earth resistance and have no problems there. Unfortunately some of the ceiling lights are not properly grounded as the tabs on ...
2
votes
1answer
84 views

Speaker wires to outside covered deck

If the picture loads you should be able to see what I’m talking about. I’m looking to move the 2 speakers that are mounted to the back of my garage over to the covered part of my deck. I would like to ...
3
votes
2answers
562 views

EMT to Top of Panel

I'm installing a NEMA 14-50 in the garage with a dedicated 50amp breaker. I have run the 6/3 romex through the attic and am at the point where I'd exit the attic to the exterior of the house and down ...