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.

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1answer
47 views

What conduit to use for later use?

Reference picture below. The electrical boxes for the switches can be adjusted in/out for different thickness of drywall. I want to run conduit from the 2-gang switch box though the top-plate and ...
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3answers
56 views

Using steel conduit as a ground intermitantly. Any problems with this?

Small back story: This is a Philly row home, so the long wall are solid brick. original outlets were non-existant or embedded in baseboards. While most of the home is being wired with romex, I am ...
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1answer
49 views

Grounding with conduit and cast aluminum weatherproof box

I'm currently rewiring my 100-year-old garage, in the USA. The existing wiring is very old and not up to any code. My plan is to remove everything up to where the circuit enters the building. It's ...
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51 views

Bringing aerial cable into an existing PVC Conduit Body

I have an existing exterior conduit entering my house, carrying low voltage (CAT6, Coax) wires from our detached garage to my inside equipment room. I need to bring a new fiber-optic cable (for fiber ...
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2answers
55 views

How do you wire and replace an old bathroom vanity light fixture

I am replacing a bathroom light fixture in an old condo built in the 70s. There is armored cable coming into the fixture from the wall. From my understanding is that I need to do these steps, 1) ...
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2answers
24 views

Sauna heater conduit from heater to sauna wall

I am installing a Sauna-core 6Kw vaporizer model SV manual PDF A UL listed LFMC with a temperature rating of 105C is requested for the wiring from the heater to the box. Where can I find a few feet ...
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2answers
95 views

Is it useful to paint outdoor conduit white to reduce the temperature?

The typical color of most types of electrical conduit is dark gray. I plan to run some kind of conduit along the edge of a flat roof to install security cameras, and I'm already worried about the ...
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1answer
49 views

How should I run this conduit for security cameras across a flat roof?

I am putting in three new security cameras on a far corner of a building that already has cameras around all the other sides. The reason this corner was left for last is that it is the hardest to run -...
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1answer
434 views

Is there an “exposed work” cover plate for keystone jacks/data ports?

I've run Cat 5e ethernet cable through 1/2" PVC conduit out to my shed so that I can connect a wifi extender and improve wifi coverage in my backyard. The conduit comes into the shed and elbows up to ...
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2answers
55 views

Grounding requirements for multipanel, multiservice installation

Overview: My question ultimately boils down to figuring out how many wires I can properly stuff down an existing conduit. There are many questions pertaining to wiring and grounding sub-panels, but I'...
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2answers
840 views

Can I run power from inside cabinets to an externally mounted fixture?

I want to install wall sconce fixtures on the outside of my bathroom cabinets. I have power inside from the wall already. Would it be to code if I cut a hole in the cabinet, mounted a metal box, and ...
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2answers
97 views

What is the best way to move this electrical box a few inches?

I need to move an electrical box up about five inches from where it is to mount a light fixture. The wall is drywall covered in plaster. The original box was nailed to a stud. Originally I was going ...
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1answer
61 views

How to run a cable raceway by doorway with raised floor?

I need to run a coaxial cable (and one more cable like ethernet) by a doorway. The floor is raised approximately 0.65 inches. I found D-line raceways, and also the floor raceways that are wide (so ...
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2answers
59 views

Should I avoid running conduit above sewer line exit on basement wall?

The prior owner of our house had an epoxy repair made on the basement wall where the sewer line exits (see images). We've lived here for 20 years and this repair is solid; there have never been any ...
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2answers
52 views

Surface-mounted Electric Circuit (conduit) - do I need a junction box

I'm planning to add outlets to my garage for a workshop area - my intention is to remove a GFCI outlet in the wall (only outlet in the garage) and replace it with a surface-mounted (conduit) circuit ...
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1answer
459 views

Changing 220 15 amp to 220 30 amp. Present circuit is in conduit with two other circuits. Need some advice

Hello and thanks for any advice in advance. My goal is to update a 220v 15 amp circuit in my garage to a 220v 30 amp circuit. The 220 circuit I am trying to update runs through schd 40 pvc conduit ...
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1answer
62 views

Electrical wire inside Schedule M copper tubing

Is it ok to run electrical wires in schedule M copper tubing? I have recently installed electric cove heaters in my house and I do not want to run the wires through the wall. I am thinking about ...
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0answers
31 views

Workshop subpanel with possible solar backfeed

Needing to run power from the residence to the workshop. the need is 220v for the welder in addition to overhead lighting, the run is 375'....what wire and conduit size is needed? If in the future, ...
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31 views

Conduit combining pipe and wire

I need to run a 1/2" black pipe for gas and about 4 electrical cables, on average 12/2 AWG through a 12" thick brick wall. Can I do it in a single tube of conduit and what should I use? Is just DWV ...
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1answer
296 views

Regulations for buried cable in the UK

I'm running a cable from my house to a site in my back garden where I am building a shed. The length of the cable run is about 7-8 metres. I have steel armoured cable which is OK for direct burial. ...
4
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3answers
826 views

How do I join an existing outlet into PVC electrical boxes and conduit?

I have an outlet on a wall in my garage. I want to move this outlet to the ceiling for use on a garage door opener and a retractable reel extension cord. I think a way to do this is to run PVC ...
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1answer
60 views

What is the best practice for grounding a shielded cat 7 ethernet cable?

I'm in the process of ducting the aforementioned cable through a conduit that I've "trenched" between my house and my office which is in an outbuilding 30m away. Since buying the cable and starting ...
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2answers
109 views

Where can I find conduit bends less than 90degrees?

I'm about to run some conduit underground, and due to various obstacles can't do a dead-straight run. I certainly don't want to add 90degree turns due to the extra drag when pulling a cable though. ...
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1answer
147 views

How to run single ethernet (no PoE) in trench through garden?

I've never buried a cable before, or even run a conduit in a wall/floorspace, so this is all new to me. I've dug half the trench across the garden so far. It's only 6" deep in some places as below ...
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3answers
148 views

Pulling Wires Through a Plastic Tube

I have a 2 meters long plastic tube with 8 mm inner diameter, and I need to pull 5 wires with a 6 mm diameter silicone tube through it. But all the different ways I tried were unsuccessful and It ...
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2answers
82 views

3-side punched steel channel (strut), image in the post - can't find any equivalents [closed]

I'm looking to install a hoist system mounted to garage ceiling. I was originally going to attach some 2x4s to the ceiling joists and attach pulleys to those, but then decided to go with steel ...
3
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1answer
225 views

Rewiring in metal conduit

My brother and his family live in an older house. It's old enough to have metal pipes as electrical conduits, quite uncommon nowadays in The Netherlands. He wants to rewire some parts, to move some ...
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0answers
110 views

150A for outdoors kitchen - wire size

I am working with the city to get the permits to build an outdoors kitchen with its own sub-panel. I decided to place it 100ft from the house. In my list[*] I have an electric tankless water heater, ...
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2answers
457 views

Run 50ft underground electrical: gauge and conduit?

I have a gfci outlet in my garage, only thing connected to a 20amp breaker (it’s about 20ft from the electrical box). I would like to add an outlet 50ft outside in my flower bed. Two questions: ...
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2answers
68 views

What is the cross-sectional area of solid, 14 AWG THHN wire?

I have found that stranded 14 AWG THHN is 6.258 sq mm, but I am having a hard time finding the value for solid 14 AWG THHN. I keep seeing 2.08 sq mm, but I find it hard to believe that the cross-...
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1answer
67 views

What is the purpose of this black felt on end of oven conduit?

I bought an oven which I am installing (reference this post for details) and I'm confused by the black wrap at the end of the conduit shown in the picture below. Is the wrap there just to prevent ...
2
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2answers
87 views

6/3 NM-B (Non-Metallic) across the yard

I would like to extend a 6/3 NM-B (Non-Metallic) ROMEX Simpull wire diagonally across my yard from basement to a wooden pole that will have the Nema 14-50 outlet. The outlet will be exposed to the ...
3
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2answers
178 views

Running 100 amp line to detached garage

I found lots of questions about this, but with many different answers. I'm looking to run a 100 amp line from my 200A main breaker box to a subpanel in my new detached garage. The run is about 120 ft....
4
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2answers
446 views

Options for installing sub-panel

we are thinking about the best way to rewire our kitchen. It had 2 circuits when we moved in. We managed to add 2 circuits using an existing 3/4'' conduit that goes from the basement to our third ...
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2answers
67 views

Solar 240 VAC source and load wires sharing a conduit

I'm planning on installing a new electric oven and solar panels on my house soon. Given the location of everything relative to my electrical service panel, both the panels and the oven will need to ...
2
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2answers
155 views

Exterior to Interior Wiring and Code Deficiencies?

I recently installed a 100a exterior subpanel adjacent to my main panel to allow for the installation of 240V and 120V service to a shed on the opposite side of my house, along with a 240V dryer of ...
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1answer
241 views

When derating for wires in conduit, do you round up or down?

Someone else is wiring up an on-demand heater. They need three 50A breakered circuits and they want to run the kaboodle in one conduit. They want to use #8 THHN wire because it's allowed to 50A @ ...
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1answer
150 views

#8 THHN in Conduit for 50 amp circuits

I am installing a new electric point-of-presence hot water heater which requires 3 240v 50 amp circuits (6 hot wires, 1 earth ground). The water heater is roughly 50' from my panel. I would like to ...
2
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1answer
166 views

How can I pull cable through wood and metal framing without damage?

I had to install a new wire for my water heater (higher amperage/bigger wire), and was drilling through the wooden top plate to snake the wire down the wall to the pass-through. Everything seemed ...
6
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3answers
816 views

THHN through EMT - then convert to Romex?

I want to wire outlets and light in my unfinished attic. There is a light switch at the bottom of the stairs, cable (I think THHN?) that runs through EMT through the wall and comes out upstairs and ...
3
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2answers
321 views

Adding wires to EMT conduit to add circuits

unfortunately, the kitchen wiring in our new condo is severely outdated. Just two circuits; one 15amp for lights and one 20amp for fridge, microwave, gas stove and oven, garbage disposal, dishwasher ...
2
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2answers
58 views

Conduit fill - number of circuits .vs. number of branches

I think I get this one, but just to verify or clarify... (USA NEC) When running multiple circuits (different breakers) in a single conduit, you have to derate after (is it 4?) sharing the one conduit....
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3answers
213 views

Flexible Metal Conduit length limits with grounding

Basic question - if I have a long run of flexible mc, 12/2 with a green equipment ground wire inside, am I limited in my overall length of this run as long as I meet the support requirements? I see ...
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2answers
309 views

Flexible Nonmetallic Conduit inside wall?

I’m finishing up wiring a sub panel in an outbuilding. There is an underground run of PVC conduit with THWN, which comes up to an LB on the exterior wall. On the inside I used flexible conduit so I ...
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2answers
73 views

Wire layout attic conduit

I'm running a pretty heavy circuit from my sub panel to the adjacent wall in the garage. I'll be pulling 6awg THHN wire through smurf tube, and then switching to PVC tube and running it down the wall....
3
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2answers
528 views

Run conduit perpendicular to ceiling joists in garage

I have a sub panel on a finished wall in my garage. I want to add two 20 amp circuits and run them go outlets on two unfinished walls on the sides of the garage. Is it okay to run metal conduit ...
2
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2answers
94 views

Inground Conduit Box for Driveway Snow Melting

I'm installing snow melting cables into a concrete and stone paver driveway. It requires 5 mats rated at 25 Amps and 6000 watts. I also need a 6th small run of heating wire to cover the full area. ...
4
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1answer
67 views

Minimum distance from receptacle terminal to conduit connector

Is there a minimum distance required from a receptacle terminal to a conduit connector? Surely this is defined in the NEC somewhere right?
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1answer
49 views

How much does EMT conduit installed vertically on a poured concrete interior basement wall have to extend beyond the top of the concrete?

I'm installing outlets in my basement on poured concrete walls and will be using EMT for conduit. How high over the top of the concrete walls must the conduit extend? The original wiring has conduit ...
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2answers
938 views

Appropriate conduit for several data cables underground over 300' run

I have done some searching around but have not found anything definitive, and/or my background is weak in this area and I may be understanding poorly. I will have 2-4 PoE cables that will be run ...

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