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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1answer
33 views

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

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
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3answers
82 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
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2answers
50 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
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1answer
55 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
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3answers
264 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 ...
3
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2answers
953 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 ...
0
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1answer
75 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 ...
0
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1answer
74 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 ...
1
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1answer
30 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 ...
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2answers
115 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 ...
3
votes
1answer
12k 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
138 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
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1answer
40 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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2answers
130 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
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2answers
100 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
487 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
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6answers
23k 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
159 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
55 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 ...
0
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2answers
49 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
71 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
35 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
147 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
65k 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
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2answers
66 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
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0answers
47 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
88 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.
14
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6answers
68k 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 ...
4
votes
3answers
514 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 ...
1
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0answers
30 views

code for installing electrical panel in old construction (CA) [closed]

I'm about to embark on a project where an older, inferior brand 125amp panel from the 1960's will be upgraded to a modern 200amp panel. I've been doing some research prior to getting the project ...
5
votes
1answer
111 views

How do I handle ground wires in 2-gang box with circuits coming from separate breaker boxes

In my house, I have 2 breaker boxes- in the basement there is a 200-amp main box, with the ground and neutral bars bonded. Feeding the main floor, there is a 100-amp sub-panel (branched off the main ...
1
vote
1answer
72 views

California code requirements for electrical panel placement height

I'm trying to get some wires to reach the bottom of my electrical panel. How high off the floor can I put my panel and still meet code requirements... or what section of which code can I find this? ...
4
votes
1answer
334 views

When using US-colored 14/3 for a simple switch does the red wire need to be marked?

In a typical switch loop (from the past) where 14/2 is used, the white wire should be marked on both ends with black tape to indicate it is a "hot" wire just like the black wire. In a 14/3 cable, the ...
1
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0answers
40 views

North Carolina Code question for splicing 6x6 posts

I have a 48 X 10 second floor deck with 6X6 posts. I want to add a roof above about half of it. It is not feasible to replace the 6X6's with longer ones as I would basically end up replacing the ...
1
vote
1answer
49 views

Is it typical that smoke detectors in adjacent apartments be linked?

I rent the downstairs apt of what used to be a garage. There is one other unit located on the second floor. My smoke alarm was going off frequently without my knowing why. Landlord finally told me ...
5
votes
7answers
12k views

Should galvanized steel pipe be used as a tub spout?

I have a 90 degree fitting coming down from my shower valve. Also have a screw on tub spout trim. Right now there is a 6" galvanized pipe that connects the 90 to the tub spout trim. Is the ...
3
votes
1answer
89 views

Mystery Electrical Voltages in Duplex Junction Box

So I'm finally getting around to installing the ceiling to floor bookcase in my home office. There is a single duplex outlet that I intend to reverse from facing into the office, to facing outwards ...
0
votes
1answer
67 views

Can I run my hydronic circulator off an appliance cord in order to use it to purge air?

I have a hydronic heating system with a relatively powerful B & G circulator pump. This pump has a relay that is controlled by the furnace electronics; if there is no power to the furnace, ...
5
votes
1answer
73 views

What code requirements exist for low-sill, upper-floor windows?

I own a house in Texas (USA), built in 1885. I am renovating, enclosing the second floor back porch; it's essentially an addition, with a bathroom, a storage closet, and a hallway. The area will be ...
4
votes
2answers
1k views

Building code requiring rooms to have internal windows?

I am staying at the Radisson in Colorado Springs this evening and I notice that some of the rooms, in an extension built about 15-20 years ago, have large security windows facing into the hallway. The ...
1
vote
1answer
105 views

What are the rules for making your own conduit KOs in nonmetallic junction boxes?

Some North American electrical boxes (usually nonmetallic ones) lack conduit knockouts, as they are designed solely to clamp NM cable. Unfortunately, some devices (the RIB series of enclosed, UL ...
3
votes
2answers
27k 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 ...
0
votes
1answer
26 views

Deck joists and ledger gap

Sorry if my terminology is bad, I tried to pick up some of the terms and do some research in the ICC before posing the question here. I've got a contractor replacing a deck for me and I noticed that ...
3
votes
3answers
122 views

Do I have to connect the grounding electrode at a detached garage to the grounding electrode at the main structure?

Article 250.32(A) of the National Electrical Code, tells us that we need a grounding electrode at a detached garage. It also says that it has to be "installed in accordance with Part III of Article ...
3
votes
4answers
163 views

In a secondary panel, are grounding and neutral bus bars required on each side of the hot bus bars?

In a secondary panel (not a service panel), the grounded (neutral) bus bar is to be kept isolated from the grounding conductors (250.24(A)(5)). In article 408, the code has this to say... National ...
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2answers
328 views

Can a white (or other color) wire be remarked to serve as a grounding conductor?

In a question related to plugging in a device with a 6-20P Plug (240V Ground + 2 Hots) into a 10-30R (120/240V Neutral + 2 Hots) receptacle, I suggested replacing the outlet with a 6-20R and using ...
1
vote
2answers
164 views

Testing and proper breakers for a multi wire branch circuit?

How do you determine if an outlet is part of a unidentified multi-wire branch circuit? Also, does code say MWBCs need to be on double throw circuit breakers and is it permissible to link CBs with that ...
2
votes
1answer
123 views

What can happen if someone doesn't get a building permit for a renovation?

What are the possible repercussions if someone doesn't get a building permit when doing a renovation? I have heard many people I know say they never got a building permit to get "x" done and they have ...
1
vote
1answer
56 views

Finished basement outlets, GFCI or AFCI?

I am finishing a basement and I am not sure if I need to install GFCI or AFCI outlets. Is it better to use a GFCI/AFCI breaker instead of the outlets? NOTE: the finished basement will be used as a ...