Questions tagged [code-compliance]

For questions relating to compliance with laws and ordinances of federal, state/province and local jurisdictions. Questions should also be tagged with the specific area of construction involved.

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6
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2answers
1k views

Does electrical code allow NEMA 14-60R receptacles in residential settings?

I know that NEMA 14-60 plugs and receptacles exist, but they seem really rare. I've come across a few random online forums where people say that this is because they're not allowed by code, since any ...
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1answer
65 views

Why is my exterior PVC water main covered in vinyl wrap?

I'm going to replace the main water shutoff valve that feeds my house. The 1" PVC water line comes up thru the ground and then threads into 1" copper (that's the part I'm going to alter). I ...
2
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3answers
70 views

SE cable indoors, thermal rating: 60C or 75C?

This is a Code question about Article 338, expect lots of Code cites. Any answer or challenge to answer MUST be well supported with Code cites, committee notes etc. The allowed temperature of a ...
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0answers
46 views

Can a light fixture extend into the mounting box in the US?

Most light fixtures intended to mount to a wall or ceiling box don't actually intrude into the box cavity itself, leaving the entire box space for wiring. Is there some code (in the US NEC, or in ...
1
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3answers
107 views

What “equivalent” to drywall can I use to finish a garage ceiling with habitable space above?

My house is a fairly typical US split-level from the mid-50s. It has a two-car garage with the master bedroom and bathroom above. The garage ceiling is simply open floor joists, with some fiberglass ...
3
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3answers
161 views

Why is Electrical Panel Rating based on Amps

if the feed wires into my panel are large enough to support all the loads of all the breakers in my panel... why is the panel rated with a max amp load. I mean... none of the breakers will trip if all ...
2
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2answers
60 views

How can I anchor deck tension ties to solid brick?

I am currently repairing a deck that is several years old and noticed that it does not have deck tension ties installed. The ledger is hung on a solid brick wall (8” thick, two courses). The brick ...
2
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1answer
134 views

Permitting a finished attic during home sale

I'm currently working on buying a house out in rural eastern North Carolina, USA. The house has a finished attic, which apparently was never permitted or inspected. Because of this, my appraisal has ...
0
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1answer
64 views

Is this outside service panel a wet location? What cable type to use?

Situation: outside service panel with a meter and plenty of breaker spaces, mounted on siding surface. The panel does not appear to be moisture-tight, there are no gaskets on the covers and entry for ...
5
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3answers
577 views

What's the difference between ETL and UL listed electrical outlets? Which should I purchase?

I want to be legal and pass home inspection. I'm in California in the USA, replacing some electrical outlets. ETL appears to be less-common, but equally recognized: The main difference between UL and ...
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2answers
106 views

Existing 20amp tandem breaker with 14/2 wires for basement light

We purchased this house in Marlboro, NJ in 2019. It had finished basement with permit. Basement has drop ceiling and 2x2 fluorescent light containing U-shaped lights. I noticed that basement has a ...
1
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0answers
28 views

312.6 interpretation when entering from the back of panel

312.6 lists (A) and (B) tables, for when NOT enterting oposite and entering on opposite wall of the box. How is the entering through the back wall interpretted? Technically it would be "NOT ...
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1answer
42 views

EMT all the way, or start with IMC outside and transition to EMT inside the building?

We are running a subpanel from the outside of the building to the garage. The 2" metalic conduit will begin from the top of a 3R box's raintight hub, run up the building about 8ft, turn right, ...
2
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2answers
151 views

Can a circuit with three-ways be split in two branches?

I have a circuit like this: panel ======= three-way (1) ============ three-way (2) ===== ceiling-mounted fixture I would like to have another fixture a bit further, with its own new three-way, but ...
1
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1answer
101 views

Can I Replace This Junction Box with a Subpanel?

In the 1950's, our house was built with a Zinsco main service panel that ultimately served six two-wire (ungrounded) and two grounded (via AC/BX) circuits. In the 1990's, a new service panel was ...
8
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5answers
3k views

How to safely and legally join building wire behind drywall

I had a small kitchen fire and the electrical wire behind the drywall in my kitchen melted. What is the best way to safely and legally (to code) rejoin the wire?
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0answers
21 views

Routing SER cable through a subpannel/junction box without making splices?

Due to other constrains I may need to route a SER cable feeding a remote subpanel via a junction box (or another small subpanel for convinience). This junction box will be connected back to back to a ...
2
votes
1answer
57 views

How do you correctly use EMT conduit terminated into a female-threaded raintight hub atop a 3R outdoor panel?

What is an NEC-accepted way of using EMT pipe with this female-threaded hub? (The picture is an Eaton DS200H2 2" Rainproof Hub/Conduit/Plate to be used atop of a Eaton NEMA 3R BRP20B200R.)
0
votes
1answer
61 views

How to compute minimum bend radious of NM wire?

The general rule for computing the minimum band radious states "8 x the overall cable diameter" for single or multiple conductor cables - no metallic shielding. What does the "overall ...
0
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1answer
99 views

Pull power from hard-wired smoke detector?

I'd like to put a power outlet in a closet to power some tech. I have access to the attic above the closet so I'm looking for possible sources to tap into. I first thought about ceiling-mounted lights,...
0
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0answers
34 views

Running Electrical Wires exterior to interior

I need a new line placed in a certain area of my house, (for a fish tank) but running it inside isn't a super realistic option, as it's a good distance and the joists run perpendicular to where I ...
0
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2answers
98 views

Is it normal for GFI test button to trip GFI when the circuit is dead?

My welder has been tripping the GFI on the circuit in the garage after I have been using it a while. I finally took the cover off and discovered the electrician saved himself, what? $2 and used a ...
3
votes
3answers
548 views

Should I run RMC all the way from panel to sub-panel, or are there cheaper options?

I am running a 60 amp circuit to a shed about 100 feet from our main panel. I'll be running 3 #6 copper wires in a 3/4" rigid metal conduit down a trench with 6 inches of cover (hand dug, and I ...
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4answers
60 views

How to properly install irrigation system/garden faucet

I want to install an above ground irrigation system for our flowers (large flower farm). The part I am having trouble with is how to properly connect to the main water supply without having backflow. ...
1
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1answer
57 views

Does this GFCI need a sticker for code-compliance?

I replaced a 2-prong outlet with a GFCI, wired as shown (connected ground wire coming into the box to the metal box as well as the ground screw of the GFCI, black wire to brass terminal & white to ...
1
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3answers
93 views

Best solution to install a sense monitor in crowded electrical panel?

I am trying to install a sense device in my electric panel to track my electricity usage. More information here. However, my panel is full, and I am trying to make it work without getting a new panel ...
0
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0answers
27 views

Converting Screened Room to 4 Season Room - Looking for confirmation / suggestions

12 years ago I added a 12'x14' screened porch to the back of my house in Maryland. The screen porch was permitted and inspected when I original built it. I'm now thinking of upgrading the room to a 4 ...
2
votes
3answers
100 views

Two 14/2 cables for a Ceiling Fan with Two Separates Switches for the Light and Fan

Is this wiring scheme a code violation for showing two 14/2 cables controlling a ceiling fan with separate switches for the light and the fan a code violation? We are remodeling and added ceiling fans ...
1
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0answers
84 views

Is it allowed to run a single pair of wires in two separate conduits?

I am currently working on the wiring in a friend's house. When it was originally installed, the homeowners insisted that every wire be placed in its own conduit. This means that every power socket has ...
2
votes
1answer
190 views

Does this 3-Way Wiring Violate 300.3(b)?

I see NEC 300.3(b) coming up quite a lot in discussions about neutral wires and smart switches. I'm looking at a 3-way configuration I have now with analog switches and how I can properly modify it to ...
2
votes
0answers
57 views

Help modifying window opening. American Concrete Institute standards? Building code?

I'm remodeling my kitchen and part of the work that I want to do involves modifying my window rough openings. Currently, the windows in my kitchen are lower than the countertop backsplash and I want ...
1
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1answer
113 views

Do I need a floor drain for the water heater in my townhome?

I’m looking at replacing an 11-year-old water heater as the hot water has become extremely discolored recently. I have flushed it twice in five years (I know, not enough) and could never remove the ...
0
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2answers
57 views

Angled step in staircase issue

We just moved into an townhouse in Santa Monica, CA and one of the steps going down to the laundry/garage is angled down 5% as opposed to being completely flat (as the rest of the steps are). It is ...
1
vote
2answers
139 views

Is it okay to pigtail 12AWG and 14AWG on a 15AMP circuit?

While working in my attic I lightly bumped a stud that had an outlet box as well as a switch that controls my attic light attached to it and when I did sparks shot out of the outlet and the circuit ...
0
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2answers
92 views

Understanding Fence Code for New Fence

I'm planning to build a privacy fence around our property. I want it to be as tall as the local code allows. I'm having trouble understanding the code for out lot. Does the plan above follow code? ...
2
votes
3answers
111 views

Would insulating a basement wall with XPS and reflective insulation create a moisture problem?

I'm in Massachusetts (ICC 2015 w/ mods) and want to finish my basement walls. I'm thinking about using a combination of 2" XPS, 1x2s horizontal 24" OC, Reflectix (double reflective ...
1
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3answers
129 views

Building a one or two step staircase in garage of awkward total rise

I am curious what your recommendations are for building a set of garage steps in my situation. I am wanting to replace the step in my garage which is an 8" movable hollow cement block. The ...
1
vote
1answer
38 views

Basement Recreation Room

I have a basement that we would like to make into a recreation room. There are two ways into the basement, code compliant stairs and a 36x80 door that leads to a mudroom (we live in Maine so mudrooms ...
0
votes
1answer
33 views

Second Pressure releif valve in hot water system?

My water heater has a pressure releif valve attached to the top, with a downspout that drains on to the floor. There is a second release valve on the hot water distribution pipes, this one drains to ...
4
votes
2answers
125 views

Egress window directly beneath electrical meter?

My house was built in 1973 and has a tiny basement window (single-pane aluminum frame) in a window well. The utility electrical meter is on the same exterior wall, not directly over the basement ...
2
votes
1answer
155 views

Gas line in contact with concrete - is this code compliant?

I'm approaching the end of my initial builder warranty on my home and had a home inspection service come out and identify potential problems. One of the items identified is the natural gas line in ...
1
vote
1answer
33 views

20' run of romex unsupported through confined-space basement finished ceiling?

I've 2-runs of 12/2 w/G romex supported to studs from breaker box up to where it needs to run unsupported 20' through and alongside (parallel) floor joists of finished floor/basement ceiling for 20' ...
1
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0answers
94 views

Can you wire a 120 volt receptacle off a 240 volt plug?

I want an over-the-range microwave, but my circuit panel is maxed out, so it can't be on its own circuit, and it would be a headache to run a new wire there anyways. My stove has two 120 volt plugs on ...
1
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1answer
58 views

Can garage and living space lighting be on same circuit?

In california, by code, can a single 15A afci circuit serve both attached garage and living space lighting?
1
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1answer
90 views

Why can't I find a listed single pole dual smart switch?

I've been looking for ages for a smart switch to replace an analog single pole dual switch like this. Everything I am able to find on Amazon, or really anywhere, is cheap foreign-made and not UL or ...
-1
votes
1answer
44 views

Tips for avoiding floor impact noise [closed]

We had a 2-story extension built, complies with earthquake code in Oregon. It only has a sub-floor right now but the impact noise from the bedroom to the kitchen downstairs is shocking. The final ...
1
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1answer
106 views

Cover black gas pipe in basement ceiling

I am remodeling my basement and have a concern about the black steel gas pipe that runs along the ceiling (below the joists). I plan to strap the ceiling, so I could potentially cover the pipe up with ...
3
votes
1answer
72 views

Levition FBBOX installation

I am doing preliminary design of the wiring for a shop to be built next year. The floor will have a concrete slab. I want to use the Leviton FBBOX system to put some outlets in the center of the shop ...
1
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0answers
27 views

Code regarding exterior disconnects, outlets and fixtures

What are the code requirements for wiring to outdoor disconnects, outlets and outdoor lighting fixtures? I've usually just ran the type NM cable directly to the box. It seems difficult to transition ...
1
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4answers
304 views

Safely mounting television or shelves above breaker box

I am looking to wall mount a television above the breaker box in my garage. It would either be this or storage shelving. Either way, I would like to have an idea of whether this can be done safely ...

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