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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0
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0answers
27 views

Can I run a 110V extension cord through a wall-mounted cable hider/channel?

I have a ceiling mounted 110V outlet and I want to run an extension cord down to the floor. Is it up to US electrical code to mount those PVC cable hider channels on the outside of the wall and run ...
0
votes
2answers
264 views

Understanding deck spans for beams.

I've been looking at various span charts for decks and I'm still not quite sure how to calculate it all when you take into account not just the joists, but the beams and posts as well. What we ...
5
votes
3answers
39k views

Is it code-legal to have a circuit breaker box within a storage room?

I am currently in the process of planning a room remodel to convert an existing bedroom into a home office and storage room. One thing that makes this conversion a little bit tricky, is the existence ...
1
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1answer
56 views

Are there any restrictions for drilling holes in solid lumber joists regarding how close to the ends of the joist? [duplicate]

I've read to not drill a hole greater than 1/3 the depth of the board (I want to drill a 3/4" hole in a 12" board for wiring, so that won't be an issue) as well as not to do it within two inches of ...
5
votes
2answers
433 views

Is there a limit to the number of holes bored in a joist?

I already know that a hole bored in a sawn lumber joist cannot be within 2" of any edge or any other notch or hole. And that the hole can only be a maximum of 1/3 the depth of the member (...
1
vote
1answer
132 views

Can I use electrical tape for making a splice? If so, how?

What is the approved method for creating an electrical splice to 14 gauge wire intented to carry 110V, 10 amps (standard residential power) in USA? What does code say about tape-splices? The splice ...
14
votes
9answers
73k views

Is using 15 amp components on a 20 amp breaker against code?

I have noticed in a few different houses in Oklahoma that 20 amp breakers are used, but all of the outlets and switches only seem to be rated for 15 amps. This goes against everything I know to be ...
0
votes
1answer
55 views

Loft bed next to a red water pipe

I had a loft bed built into my condo. The bed is up near the ceiling and there is a large red water pipe just above it. It carries the water to the sprinklers but its not a sprinkler itself. My bed ...
0
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1answer
84 views

Can a cord and plug attached to a wallbox be used as a transfer means for fixed wiring downstream of the box?

So, we have a circuit that runs from the panel to junction box A, then to junction box B, and then onwards to a load. Can the fixed Chapter 3 wiring between junction box A and B be replaced by a ...
2
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1answer
243 views

Is Kitchen cooktop venting required?

I'm replacing an electric cooktop with downdraft ventilation. Does building code require that I keep this ventilation, or can it be removed?
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1answer
121 views

Why are 3-1/2 (16d) nails so hard to find?

So I'm a little confused. It seems like 21 degree fullhead framing nailers are fairly standard. According to the http://codes.iccsafe.org/app/book/content/2015-I-Codes/2015%20IRC%20HTML/Chapter%...
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0answers
22 views

City Assessor vs Building Permit [migrated]

I live in NY and went to my local code enforcement office and applied for a permit. I was very up front about everything I planned to do with my home renovation from start to finish. I explained that ...
4
votes
3answers
73 views

Is a grounded (neutral) conductor required at a switch location that controls a switched receptacle used for lighting?

The National Electrical Code requires that all habitable rooms and bathrooms, have a switch controlled light (210.70(A)(1)). It also allows a switched receptacle to be used, instead of a lighting ...
3
votes
3answers
32k views

How to properly ground a subpanel in detached building?

I Will be installing a subpanel in a detached garage. The subpanel will be 60 amp. The garage is about 30' from the main-panel in-house, and I will of course get an exact length before selecting the ...
3
votes
1answer
5k views

Is there a specific NEC code specifying the distance between water heaters and electrical panels?

I have a condo in a large building with many identical units. Several times other owners have mentioned that the original layout of the utility room isn't up to code due to the proximity of the water ...
2
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4answers
1k views

Any problem with installing two identical circuit breakers in series?

Suppose I want to reduce risk of a circuit breaker malfunctioning and failing to disconnect a shorted circuit. What if I install two identical breakers sequentially (one after another) so that if one ...
1
vote
1answer
52 views

GFCI Outlet or Breaker

As a part of my renovation of a 1900's cottage I'm completely rebuilding the kitchen. I'm planning on running 2 20A circuits shared between the countertop outlets, fridge & dishwasher. Is there ...
1
vote
1answer
473 views

Coast 3-way — does this conform with Code?

For those who aren't familiar, the California or Coast 3-way switching arrangement is a method of wiring a three-way switch circuit that is used when both a switched and an unswitched hot are desired ...
3
votes
1answer
98 views

Three-way switches to control top outlet of multiple receptacles

I am in the process of renovating the livingroom in my 1930's era house which only has two non-switched outlets in one 12x12 room. I would like some receptacles to have one switched and one non-...
3
votes
3answers
170 views

What gauge wire do I need for my dryer?

I want to add a washer & dryer to my garage, but breaker box is on the wrong side of house. No matter which way I run the wire, its 110 feet of wire required. Will 8-3 with ground work? Or is ...
1
vote
1answer
41 views

Wiring Transition from Inside of wall to Outside of Wall for hard-wired appliance

I am installing an electric kickspace/toe kick heater as part of my kitchen remodel. I do not quite understand how to transition the supply wiring from inside the wall to the space underneath of the ...
1
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0answers
49 views

Post to beam connections

Here's the issue. I was told that I could find some angle brackets to finish this project (and secure the post to the beam). However, I'm finding nothing that doesn't require we remove the set beam ...
1
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2answers
38 views

Would a wall mounted TV count as an appliance for the purposes of tamper resistance outlet code requirements?

I was reading this review on Amazon for a recessed outlet where someone points out that it isn't tamper resistant and, as such, is worthless. There is a discussion between the rater and other people (...
10
votes
1answer
906 views

Can cable splice devices be concealed?

Devices exist that claim to be able to splice nonmetallic sheathed cables together outside of a box, and in concealed locations. Are these types of devices allowed by National Electrical Code? Here's ...
0
votes
1answer
49 views

Best way to run 40 lan cables in loft style office [closed]

I have a project to run around 40 lan cables in loft style office. The office don't have any conduit attached to ceiling at all. The location of RJ45 Jacks is multiple. I wonder what is the best nice ...
1
vote
3answers
117 views

NEC 6/12 rule clarification

I understand that you must have an electrical receptacle 6 feet from any obstruction or break in the wall, such as a doorway, and no more than 12 feet from the previous electrical receptacle. Does ...
2
votes
2answers
97 views

Conduit Size for Sub-Panel run?

I have old overhead wires that go between my home and a detached garage. The plan is to remove the overhead wires and install a new sub-panel in the garage with an underground (PVC 80) run between the ...
0
votes
1answer
71 views

When re-roofing and doing a tear-off do I have replace the roof deck with plywood?

My home was build in 1920 and uses planks for the roof deck. I was planning on just removing the old asphalt shingles and installing new asphalt shingles. Makes sense to me; until a contractor friend ...
4
votes
3answers
353 views

House has no plumbing vent — is this a solution?

I've been living in a fixer-upper for a while... I've been fixing a lot that was previously done wrong. I've finally gotten around to ripping out our first floor bathroom (two full bathrooms) and I'...
3
votes
2answers
1k views

Is framing with screws legal?

A friend used trim head screws for ALL of the 2x4 framing (including the outer walls) of his 2400 sq. ft. house. The house uses 8x8s to carry the load; none of the 2x4 framing is load bearing. The ...
1
vote
1answer
36 views

Unswitched hot in Fixture Junction Box

A comment on an answer to this question seems to be saying that its illegal for an unswitched hot to run through a light fixture junction box, even though its not connected to the fixture at that ...
3
votes
1answer
13k views

Are there locations in a residence where a non tamper resistant receptacle can still be used?

Assume for a second that my jurisdiction has adopted 2011 NEC code as legally binding without significant amendment. This code requires (406.11) that 120V 15/20A outlets in all areas defined in NEC ...
4
votes
5answers
193 views

What is code or common rule when securing multiple electrical lines?

What is common practice or code when running new electrical lines in a home(15 amp/20 amp) in a basement that feed up to the 1st and 2nd floor of a home? Is there a rule on how many wires can be run ...
0
votes
1answer
53 views

How to determine if a circuit breaker has GFCI

I recently discovered none of the grounds in the three-prong outlets in my house are connected to anything. AFAICT the only way this is allowed without GFCI outlets is to have GFCI circuit breakers ...
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vote
2answers
134 views

is a permit required for changing old outlets

Do I need a permit to change old outlets out that are cracked or not working and replace them with new ones Thanks
4
votes
2answers
129 views

Maximum Distance Between Outlets

In an answer to this question Iggy's answer contains a picture that says "Maximum spacing between receptacles on the same countertop space is 4ft." Does this mean if I were to build a house with 28 ...
3
votes
4answers
496 views

Renovation for Dummies

I am about to close on the purchase of a small (1000sqft) cottage which, although it is habitable, is in desperate need of some tender love & care. I am an avid DIY nut and have have already done ...
3
votes
6answers
24k views

How can I insulate kitchen vent to prevent cold air blowing through all the time?

Building code requires my kitchen to have a 15cmx15cm vent (besides the kitchen cook-top vent). This vent is basically a hole in the wall that reaches to the outside. The vent has grating on both ...
2
votes
1answer
176 views

When do galvanized pipes in NYC residential water delivery pipes need to be upgraded?

It was suggested that I ask here. Some residential properties in New York City still have galvanized pipes for the inlet water line. Since heavy metals from the galvanization can leach into the ...
3
votes
2answers
83 views

Are barrier terminal blocks or bus bars inside a junction or weather-proof box up to NEC code?

I'm going to be adding some Particle Photon relay control to some receptacles so I can remotely turn on and off appliances and lighting. I'm going to house the Photon board and relay in a weather-...
0
votes
2answers
68 views

24" OC Interior Wall Framing for UDC

I am framing my basement tomorrow and I'm thinking of using 24" OC for my interior non-load bearing walls. I plan on using 2 sheets of 5/8" sheet rock with a noise dampening compound. Is 24 OC legal ...
3
votes
1answer
102 views

Round hole, rectangular junction box

I am installing a new light fixture into ceiling. There is a round hole there right now (from a recessed light that I removed). The problem is this round hole is just short in diameter of standard ...
3
votes
1answer
37 views

How do I handle the grounded neutral for a simple switch?

I trying to move a switch, which is currently in a 2-gang box. The 2-gang box will need to stay in place (and covered with a plate) as it is also the junction of some other stuff (currently power ...
8
votes
3answers
185 views

Why can the connections of a recessed light be buried in drywall, but not junction boxes?

I'm redoing lights in our kitchen and have to splice some lines. I have read numerous threads that all say you cannot bury the junction box in the drywall, it has to be accessible. The recessed lights ...
7
votes
5answers
71k views

Can different gauge wiring be used in the same circuit?

I am extending a lighting and outlet circuit in a basement. The current setup has the following characteristics 15 amp. circuit breaker (200 amp service) 4 existing lighting fixtures using CFL bulbs ...
4
votes
3answers
1k views

Is it okay to protect NM Cable in an unfinished basement with ENT?

Adding a 20 amp subcircuit (120V) to furnace room to turn it into a workshop. Initially it will have one duplex and 2 fourplex receptacles, the fourplex receptacles will be on cement walls, the duplex ...
1
vote
2answers
82 views

european outlets in an american building

I have seen european outlets in industrial equipment made in europe but installed in the united states (often with a 480/240v step down transformer), and I have come across a couple people who want ...
1
vote
0answers
48 views

Are drain-clearing bladders safe?

I advised a friend to use a drain bladder to clear a sink clog. Turns out there was a vent that didn't connect to the main vent stack--it just terminated inside the wall. So she put a bunch of water ...
3
votes
2answers
97 views

Can I run NM wire through this type of flex legally

This flex is sold along other types of NM wire molding, but I can't find anywhere where this product explicitly allows NM or not.
4
votes
3answers
535 views

Is any of this plumbing work a code violation?

I've repaired plenty of pre-existing plumbing, but don't know enough to put all new plumbing in a house, so I hired it out. Some of it it is fine, but I'm unhappy with the rest of it, and since I'm ...