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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2
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2answers
72 views

How are multiple switches in “or” setup functional?

I've come across a light controlled by three switches. It's unique to me because any combination of switches must be in the "on" position for it to work. All three must be "off" for the light to go ...
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0answers
48 views

Attic access in closet- reconfigure options (Canada)

I have a narrow bathroom and this is because the builtin closet of the adjacent room takes space from the bathroom. I am planning to remove the walls that separate the bathroom from the closet in ...
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2answers
79 views

Are Ideal Greenie 30-192P Ground Wire Nuts approved for use with stranded wire?

I looked at page 4 of the UL document here: http://www.idealindustries.ca/media/pdfs/products/ideal_ul_listed_combinations.pdf And I notice that it says you can use up to 4 #12 wires. However, it ...
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2answers
3k views

What is the correct material to sheath pex pipe under a slab?

It's recommended in my area (due to rocky soil) to install a sheath or channel under the slab for the pour, then slide the PEX into the sheathes afterwards during the rough. This also allows the PEX ...
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2answers
286 views

How can I move the neutral-ground bond to my house from the pole?

Suppose I have a setup like this: I take my power at a pole. The utility wants me to fit circuit protection there for a very long run to my house. By my read of things, this makes it a main panel ...
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1answer
117 views

Can I wire a receptacle to a cord and plug?

I am planning to add a recessed wall box for my TV so I can put the connections behind its wall mount. Most of these boxes come with a pass-through of some sort as well as a spot for a single-gang ...
3
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4answers
3k views

What are the IRC requirments for bracing/blocking in a load-bearing 2x6 stud wall that is 12' high?

When building an exterior load bearing wall 12' high, using 2x6's, is there horizontal blocking/bracing required between the studs? If so, what are the requirements for that? ie. how many per cavity, ...
2
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2answers
7k views

What are the NEC requirements for a temporary power pole?

The county requires the temporary power pole to be installed "in accordance with the NEC" but doesn't elaborate further. Are there any specific requirements for temp power poles in the NEC 2014 or ...
2
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1answer
631 views

Can I run electrical along a furring strip in EMT?

I know that I am required to run electrical spaced away from furring strips when running parallel. Does this code still apply if I run the wire in EMT? What about flex metal? What about PVC?
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2answers
3k views

What is the code-mandated overlap of welded wire mesh in concrete slabs?

I'm trying to find a code reference for welded wire reinforcement in residential concrete slab foundations. I though it was 6" overlap of the sheets, but some sources are saying it's more. Does anyone ...
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2answers
1k views

Is it bad to have multiple grounding electrodes?

I think this question gets close to answering my question, but I am not quite sure. I have a detached structure, powered by a feeder from the main panel where the ground and neutral are bonded. The ...
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1answer
54 views

How is a waste drain vent pipe vertical clearance measured?

In my jurisdiction, a waste drain vent pipe must terminate 6" above the roof (or another vertical surface if it's not sloped). Is this typically measured on the ridge side or the eave side? For a 4" ...
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3answers
4k views

How is DIY done so much on 'fixer uppers' in areas where AHJs demand permits and licenses? [closed]

I see a lot of cases of major 'fixer upper' homes or general home improvement done in an area where the Authority Having Jurisdiction (AHJ) requires permits and only offers them to licensed pros. How ...
2
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1answer
1k views

What are the guidelines for drilling holes through rim or band joists?

I'd like to bore a 8" hole through 2"x12" rim joist. The hole will be used for a downdraft kitchen vent. Is that 8" hole size ok and up to code? There are guidelines for boring holes and notches in ...
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1answer
2k views

Rules for wiring and conduits on basement ceiling with or without drop ceiling?

We're doing work on a small home with 1 main floor and a basement below that, and during some work (maintenance on plumbing, HVAC ducts, and wiring) we've removed a bunch of the drop ceiling from part ...
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1answer
76 views

Extending joists to reach a new beam. What code to review?

I have spoken with a contractor about removing two load bearing walls (amongst other work). The two load bearing walls are parallel but offset by two feet to provide space for a range/oven in the ...
3
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3answers
5k views

Damaged Wire Insulation

I opened an electrical box today to a bit of a surprise - a little bit of exposed conductor on one of the wires! As far as I can tell, there is no damage to the conductor (12 gauge). Note that this ...
1
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1answer
51 views

Can a Dishwasher be installed underneath a Fuse Box?

Can a Dishwasher be installed underneath a Fuse Box? I have a cabinet in my Kitchen that I want to remove and put a dishwasher in place, but is this against code? I live in New Jersey, USA.
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2answers
2k views

Is my bathroom project prohibited due to a low ceiling height?

We would like to install a half bath in our finished basement in Colorado. The issue that I seem to have is that the ceilings are short at only 73". My understanding is that code requires the ceilings ...
2
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3answers
216 views

What happens when you can't make something code-legal?

I suppose this is a bit more general, but I would like to know how inspectors and jurisdictions have handled cases where there's nothing that can be done to bring something up to code. As an example, ...
3
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3answers
3k views

Splitting a 220v line into a 110v line and a 220v line?

This question reminded me that when we bought our house, I found the previous owner had taken the dryer's 220v circuit and continued half of it from the 220v outlet to make a 110v circuit for the rest ...
4
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2answers
281 views

Minimum bedroom size - 7 foot in any horizontal direction

I'm remodeling a basement and trying to determine if a particular layout would violate code. I am in a 2015 IBC/IRC jurestiction. This blog indicates that the bedroom must be At least 7’ in any ...
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1answer
930 views

Is this T&P relief valve discharge pipe installed correctly?

I had a plumber install a new water heater the other day, and he said it's up to 2018 (US) code, but I've been wondering if the T&P relief valve discharge pipe really is correct, because it seems ...
2
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1answer
482 views

Derating a dimmer when using LED lamps?

I've run into a bit of a delema. I plan to install 16 Halo H7 recessed lights in the ceiling of a new home. They are technically rated at 75 watts because they have medium screw base sockets and can ...
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4answers
5k views

When is an expansion joint required for PVC service entrance conduit?

The service entrance will use 2.5" RNC, about 100' run underground, with 2 90 degree sweeps, with the second sweep coming up to a meter/panel mounted on the outside of the house. The conduit will be ...
19
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3answers
1k views

Is it permissible to have exposed mains conductors in holiday lights?

I've just had a holiday lights company install some outside tree lights, and I found they had done it so that at several places the prongs of mains cable plugs had been left exposed, and carrying ...
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1answer
161 views

what can the county do if my shed violate zoning distance?

So, here is the issue. Me being stupid, decided to start building a 12 x 16 shed. (sits on wood foundation) THEN I started researching what the county permits. The shed has a setback of either 5 or ...
5
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2answers
468 views

Is it Code to support Class 2 (thermostat) wires using a gas line?

Related to this question. Our gas furnace, while quite functional, has some quirks in its installation. One of them is that the installers cut off the old (original to the house) thermostat wires at ...
4
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2answers
177 views

Can central alarm smoke detectors be used instead of 120v smoke detectors in a new residence?

Code requires that new residential construction have a smoke alarm in each bedroom and outside of each bedroom, and that the smoke alarms be interconnected. (They all go off at once). If you plan to ...
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0answers
36 views

How near does the water heater shutof valve need to be?

Codes say I need a shutoff valve "near" the water heater, accessible on the same floor. How near is "near" - is it OK if I have one on the source side of the pipe, near the water meter? (It's a ...
7
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2answers
588 views

What do I need to provide the cable company with for grounding, when wiring my own house?

I'm planing to do my own electrical wiring for a new house, and the cable company needs something to attach their ground wire to when they mount the demarcation box. I'd like a clean looking install, ...
4
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1answer
274 views

What's a clean and code-compliant way to terminate Cat6 cables at a wall, where a rack mount patch panel will be in front of it?

This is new construction for a home, and I'm installing about 65 Cat 6e home runs from various points in the house to a location on the wall where a freestanding floor rack will go at the time of ...
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2answers
770 views

Code for Buried Comms Cable

Are there any code requirements for buried communications cable (coax for TV/Internet)? Rockdale County, GA if it makes a difference. I have some jokers contractors at my house today who are supposed ...
3
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1answer
135 views

US Building Codes - Do I need a handrail on this initial section of stairs?

I realize that building codes tend to vary by jurisdiction, but I'm wondering, in general, do I need a hand railing and/or guardrail on this initial section of stairs as shown in orange? My hope is ...
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2answers
114 views

Tying additional lights to entryway light — does that violate any codes?

My front door opens directly into the living room (no formal entryway) and there's a single potlight directly over the door with a dedicated switch. I'd like to add three more cans to the living room ...
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2answers
68 views

Is there any code regarding in-wall convection ovens?

Are there any code restrictions involving in-wall convection ovens?
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2answers
2k views

what 2017 NEC code talks about knob and tube replacement

Have an insurance job and the home owner wants to redo the 1st floor apartment. The apartment is wired with knob and tube so I recommended it needed to be updated. When pitched to the insurance ...
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2answers
6k views

Code requirements for the proximity of Power outlets to wash machine water outlets?

In a laundry room (in the USA) - is there a code in the NFPA - NEC for minimum distance the Dryer and Washer Electrical outlets must be placed from the washer water pipes ?
2
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2answers
124 views

How do you rough in for surface mount disconects that install after drywall?

When you have disconnect boxes (60 amp non-fused disconnect) that surface mount after the drywall is installed for a water heater, an air handler, or similar large appliances that connect to the ...
4
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2answers
4k views

Is it OK to caulk around an outdoor electrical panel or meter base?

I've heard that you shouldn't caulk the outside perimeter of the meter base or an outdoor electrical panel (sealing it to the house siding), because the panel needs to "breath" on the back. I haven't ...
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1answer
4k views

How high should I install an outlet in my bathroom?

I would like to install a GFCI outlet in my bathroom. I attempted to install it beside our vanity mirror on first the left then the right side, but was unable to due to the construction of the wall, ...
2
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1answer
201 views

Multiple 30A outlets on the same breaker

I am upgrading my Garage/Shop electrical installation and adding a few 30Amp circuits. Is there any electrical code restrictions to have multiple 30A outlets on the same 30A breaker?
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1answer
5k views

Using a 15 Amp Switch on 20 Amp Circuit

I know that it is to code to use two 15 Amp Receptacles on a 20 Amp breaker. Is it acceptable to use a 15 Amp switch that controls the bathroom lights, which is on a 20 Amp breaker, along with an ...
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2answers
103 views

Can you serve a multi-wire branch circuit off a pendant?

I've seen a slick trick done in some maker spaces. They have a big room full of project desks. Above each desk is an air hose on a retractable reel... And a NEMA L14-20 receptacle. Dangling off ...
2
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0answers
64 views

Does removing some drop ceiling panels make plug-in lights OK?

I am uplighting a room with a drop ceiling. Cheap 4' fluorescent shop lights are hung below the drop ceiling, with their cords disappearing into a corner of a drop ceiling panel. Real hack job. ...
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2answers
2k views

Running Cable Underground in PVC Conduit - Do I bond the PVC segments before pulling the wire through?

I have the PVC segments with the flanges at one end, and a relatively short (under 50ft) run, but its very bendy at the ends. My initial thought was to pull the cable through the pieces one by one, ...
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2answers
168 views

How to safely block French doors to nowhere

I am going to tear down an existing deck (which is rotting out) and want to block off usage of existing French doors that currently lead to the deck. I’ll attach photos below. I am going to build a ...
1
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1answer
52 views

How to fix damaged wires in receptacle box in new installation?

While cutting holes for outlet boxes in new drywall, my contractor (ahem, me) managed to damage some wires in one of the outlet boxes with his RotoZip. Now there's not enough undamaged wire to meet ...
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2answers
228 views

What is the proper disconecting device for a heater + air handler not in sight of the panel?

I'm finding all sorts of conflicting information on this, some of which is hearsay, local, or outdated. For an electric heater and air handler unit, with #6 wire, that will be either 50 or 60 amps, ...
2
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2answers
859 views

What are the specific and current code requirements for wiring two circuits to one duplex receptacle?

I'm finding a lot of conflicting information on this, and I think the code has changed a lot over the years, and many posts in forums are about multi-wire branch circuits (or being confused with them)....