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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26
votes
7answers
5k views

Are soldered electrical connections code-compliant?

I was changing a switch in my house when I found a number of connections in the electrical box that were soldered rather than secured with a wire nut. The solder joints look very well done, the ...
9
votes
3answers
636 views

Are “terminal block” style junction boxes allowed in the US?

In the UK it seems pretty common to see junction boxes with built-in screw terminals that are used only for splicing wires from 2 or more cables together. Typical example: (source) Sample wiring ...
0
votes
2answers
39 views

Window Tempering Rules and Interior Doors

Are interior doors included in the discussion of the 24/60 rule? In other words, if I have a pane of glass that is within 24 inches of an interior door, does that mean it must be tempered?
7
votes
1answer
132 views

Can new construction recessed lights be installed in inaccessible ceilings?

In California, does code allow me to install recessed lights in a ceiling which which be inaccessible once closed up? (Such as between floors) I have seen it done many times but I was thinking that ...
1
vote
1answer
22 views

Intl Mechanic Code 309.1 “Space-heating systems” clarification

I am looking at the ICC Intl Mechanical Code, in section 309.1 309.1 Space-heating systems. Interior spaces intended for human occupancy shall be provided with active or passive space-heating ...
0
votes
3answers
66 views

Electrical Question for Receptacles in guest house

Wiring a out door shed that has everything that a home does; bathroom kitchen living room and extra bedroom. Pretty much like a guest home you can say. When I run my wire in the bathroom of it. The ...
1
vote
0answers
44 views

Do vanity lights require a junction box? [duplicate]

We have an electrician at our new home in Utah installing some new lights, after removing some of the installed lights we are noticing that above the vanities there are no junction boxes behind our ...
1
vote
1answer
42 views

Spray foam insulation against metal roofing

The context of this question is new construction for a small (28' x 32') outbuilding that will be used for commercial purposes. All work will be permitted and inspected (governed by these codes). I am ...
0
votes
0answers
48 views

Shed under power lines

I wish to build a shed, but the location I want to use has an overhead power cable running from the utility pole to the neighbor's house. The line has about 12' of clearance from the ground. Is ...
5
votes
3answers
456 views

Can I reuse old electrical wire?

I'm adding new lights to my basement ceiling. I pulled out the old messy tangle of wires and ran new romex, but was missing the 4ft needed to reach the last box. I reused the old wire. Will this ...
0
votes
2answers
62 views

Will I be forced to bring fridge and laundry circuits up to code?

I'm adding new lights and a few receptacles to my basement. I just discovered that my kitchen fridge and laundry washing machine are both on the basement lights circuit (14awg, 15A breaker). I think ...
1
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3answers
67 views

R302.7 Under-Stair Protection - does drywall need to be below stringers or just treads and risers?

I am finishing a room in my basement, and a wall will butt up against where the stairs are. I'm planning on making a small door to access the volume below the stairs for a small storage area. The ...
3
votes
0answers
91 views

What are the legalities associated with mounting splicing wire connectors?

There are some situations, such as those involving large junction or pull boxes that serve as central takeoff points for many-plexed homeruns or homerun banks, enclosures that form central splice ...
1
vote
1answer
83 views

What box extender to use for dryer outlet?

I am planning on putting beadboard wainscoting on a laundry room wall. I will need to add an extender to the dryer's 240v outlet to keep it to electrical code and have the outlet sit flush up against ...
1
vote
1answer
26 views

Inner deck guardrail posts and deck framing connectors

I am mounting the deck guard rail posts inside the frame before adding the decking. I have used deck framing connection hardware as suggested in the Simpson Strong-Tie deck connection guide. One ...
0
votes
1answer
66 views

Adding 240v (NEMA 14-50) outlet right behind breaker panel

The breaker panel is on the outside wall, right next to my garage. I want to install a 240v outlet right behind the panel, thru the wall. If i open the panel, there are those round metal covers that ...
3
votes
2answers
104 views

Is there a code-compliant way to label a wire where the conductors are not wired in the expected way?

This might be an X/Y problem, so if there is a better solution, I'm all ears. I have a 3-gang electrical box in my basement that is already overcrowded. It has The wire for the three-way light in the ...
0
votes
1answer
104 views

How critical is it to use the correct wire colors within the same electrical outlet?

I am replacing "razor only" receptacles to GFCI. The outlet contains a LINE cable (black, white, bare copper). The previous receptacle of course did not use three prongs, so the ground was just ...
5
votes
3answers
921 views

grounded outlets and code compliance

I live in a residential unit in Oakland, CA and I am curious what the rules are about grounded outlets. Is grounded power required? My outlets are 3-prong and an outlet tester reads that there is ...
2
votes
2answers
189 views

Do I need to use BX wire in my house?

I live in the Chicago, IL suburbs, and I've been told that I need BX wire to be up to code, both from a worker at Home Depot and from a friend who is an electrician. However, I have only used Romex ...
1
vote
0answers
24 views

Canadian (Alberta) Residential Electrical Code

Is there a homeowners version of the current electrical code for residential wiring in Alberta available at no cost? I’m renovating my kitchen and would be helpful to know the many changes and ...
2
votes
3answers
118 views

Legal requirements for generator installation?

I would like to have a standby generator installed for my house. Based on my own assessment of our electrical needs, along with my desire to have a slower-running generator to reduce noise, and my ...
2
votes
2answers
70 views

Why are shower drains 2“, but tub drains 1.5”?

In the US, code dictates that the drain (p-trap and arm) on a shower use 2" pipe, while on a tub you use 1.5" pipe. I understand that is code, but I am curious as to why it is the way it is. ...
2
votes
3answers
89 views

How to cut hole larger than 1/3 of joist?

I need to run a toilet drain (3”) through three joists (9 1/4”). Code states holes in joists can not exceed 1/3 the size of the joists. Catch is for 3” pipe I need a 3 5/8” hole — which is larger than ...
1
vote
1answer
79 views

Do two circuits on one receptacle require shared trip breakers?

In California I have two separate circuits powering a single a single receptacle (such as for a dishwasher and disposal). This is not a MWBC. Does current code require these circuits to be on shared ...
0
votes
1answer
34 views

Max sill height for windows as an escape and rescue in a group R-3 occupancy?

Don't have a IBC code book available, assuming it's answered in there. Google is giving me some confusing answers
0
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2answers
56 views

What are the requirements for a bathtub or steam shower in a bedroom?

We live in a suburb of Minneapolis. Our master bedroom has a decent amount of unused space. My wife really wants a steam shower. Rather than remodeling an existing bathroom, I've started thinking ...
1
vote
0answers
37 views

Q couple questions on the CA Plumbing, Electrical Code RE: keep-out distances between gas, electric

General: Southern California area Residential Experience with HV and high pressure N2/CDA systems from my work, but not flammable high pressure gasses. Question 1: Is there a minimum distance ...
4
votes
2answers
113 views

Can NM cable be installed in a junction box mounted to a floor joist in an unfinished area?

I understand that NM cable can be run along and through floor joists in unfinished areas of basements. However, can the NM cable then be installed in a box mounted on the joist, perhaps for a light ...
0
votes
2answers
56 views

Stair Illumination: Location of light

Before I close this up, is this legit location for light at bottom of stairs? Yes, switch at top and bottom, and light at top as well. Through some quirk of symmetry, this can light (of 12 total), ...
-1
votes
1answer
48 views

In conduit with 75C wire, can I use #14 wire for 20A circuits?

I note that with 8 AWG wire... in NM-B (Romex) cable I can only get 40A: I am required to pull from the 60 degree C column of Table 310.15(B)(16). However, in conduit, with 75C wire (THHN) and ...
0
votes
0answers
35 views

Can I place a slide-in gas range up against plywood sheathing?

I'll be putting a slide-in gas range up against a knee wall. However, I planned on bracing the knee wall with 3/4" plywood sheathing from the bottom plate up 30", where it would be completely covered ...
0
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0answers
46 views

Fuel gas CSST line allowed in plenum in Texas?

I recently visited a house. The host pointed out something interesting. The furnace AC combo is in an indoor closet and is vertical upflow and sits on top of a filter base that sits on top of the ...
2
votes
1answer
58 views

By how much can I trim back the connectors of 1.5" PVC fittings?

We're installing the drain plumbing for a newly installed tub, and the drain shoe overshoots the tub drain hole. The tub has been mortared in place and can no longer be moved: A joist limits how far ...
0
votes
1answer
169 views

How much weight/many people can my rooftop deck hold? 2“x12”x20' joists, 16“ on center, 2”x4" framing under [closed]

How much weight/ How many people can my rooftop deck hold? The joists are 2"x12" over 20ft, 16" on center The framing under the deck is typical 2"x4" framing (living space), on a concrete ...
1
vote
2answers
77 views

The structural integrity of a backyard structure

I need a shed, but I really don't want to put a standard-looking shed. I would like something that's pleasing to the eye and fits my property. In addition, I thought it would be cool to have a second ...
0
votes
1answer
78 views

ok to run PVC pipe behind gas meter?

I am considering installing a radon mitigation pipe system in my home, but the only area where I could reasonably have the pipe exit my home is crammed with all my other utilities. The best spot I've ...
0
votes
2answers
87 views

Code requirements for adhering wall light to electrical box - does the light need to be attached to the box?

I have a wall light which I'd like to mount on a wood board for decorative purposes. Below are photos of the light from the front and the back, and then a photo of the light on the board. I don't ...
3
votes
1answer
96 views

Can Canadian panels be used in the USA?

Here's a slick Canadian subpanel with a "generator interlock". It is a normal 2-pole panel, just like common USA panels, and it's Square D QO, which is common as dirt in the USA. However for the ...
0
votes
1answer
59 views

Does the ground pigtail to the jbox need to match the largest circuit?

In California, I have a metal jbox and, in it, there is a junction for a 10/2 NM and a 14/2. These have different size ground conductors. Does the code require a specific size ground conductor to ...
1
vote
1answer
73 views

How to protect these NM cables?

I have an old chimney that an electrician used to run cable to the attic, and they protected them with small diameter metal conduit. I have run several more cables. I could run each in it's own tube,...
1
vote
1answer
132 views

Is Drywall needed on exterior wall of garage on concrete block, 2-story house in Florida

We have a home inspector (selling house) stating they want us to put up drywall on an exterior wall in the garage. I know it's code for ceilings and the abutting walls to the interior, but do exterior ...
1
vote
1answer
51 views

Remove switch that controls thermostat

I recently bought a condominium in a large building, built in 2005. It has a single thermostat, and the thermostat works fine. But right next to the thermostat, there is a switch. It looks like an ...
0
votes
1answer
25 views

Test gauge plug on domestic gas system

I am in the U.S. I know that it is a good idea to have a capped or plugged nipple outlet somewhere on your interior gas pipe system where you can mount a test gauge that can be pumpted to a certain ...
0
votes
1answer
132 views

Why are U.S. residential circuit breaker service panels so poorly designed?

I find as a knowledgeable home DIYer, that my Siemens 200 amp circuit breaker panel to be a pain in the butt to use. It is less than 25 years old, and yet it seems to have been intentionally designed ...
3
votes
1answer
292 views

Derating 6 current-carrying conductors?

I'm having a hard time understanding 310.15(B)(2)(a). Here's the boat I'm in: I hooking up a tankless water heater that calls for 3 40 amp breakers (it's a 24 kw Ecosmart). So I put in a sub panel in ...
3
votes
4answers
1k views

Do GFCI protected devices need to be labeled as such, if they are protected from another location?

I'm doing a fairly substantial rewire of about half my house. In many places, like kitchen, bath, and outside/garage, I've replaced circuit breakers in my box with GFCI or dual function breakers. ...
0
votes
1answer
171 views

Can you heat an entire house with wall-mounted gas heaters?

My house currently is heated by a hot-water boiler, with radiators in the main rooms. The bedrooms have no radiators (it's an old house and I guess when it was built they figured the central radiators ...
2
votes
2answers
86 views

Are switch screws sufficient for load grounds?

In California, in a metal gang box with the line ground attached to the box with a ground screw, I understand that I don't need to attach a ground wire to a switch (screwed tight, captive washers ...
0
votes
1answer
99 views

Electrical pipe heated by heating pipe - against the code?

Please see the picture below. The three pipes in the front are electrical (conduit). The big black pipe in the back is the heating pipe. I guess something went wrong when building the building and ...