For questions generally relating to preventing or avoiding injury in the home or on the job site.

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3
votes
2answers
175 views

Should threaded pipe be torqued to spec?

Most, if not all threaded automotive fasteners have specified torque, which is ensured by using torque wrenches. But how about threaded pipe, galvanized steel for water or black pipe for gas, ...
3
votes
1answer
51 views

Correct way to attach outlet wall plate?

I have been replacing the outlets in my house with Tamper Resistant outlets. On some of the replaced receptacles, the plate does not tightly attach to the wall—it can be pried back by my fingers. (I ...
1
vote
1answer
57 views

Ladder is warped; how much is too much?

I recently bought a 28' fiberglass extension ladder (big-name brand from the blue box store), but I found that it's a bit warped. When I lean it against the house, with both feet firmly planted and ...
5
votes
2answers
50 views

What is the *interrupting rating* of a GFCI receptacle?

Say, we have a UL943 compliant 15A GFCI receptacle on a garden-variety 15A grounded branch circuit. Some nitwit comes along and wirenuts the receptacle's load-side hot to the branch circuit ground, ...
23
votes
4answers
2k views

How can it be dangerous to feed a water heater from two separate panels?

In a recent question, a user asked "Can a water heater be installed between two apartments and wired to both apartments' breaker boxes, effectively splitting the bill between the two?". One of the ...
4
votes
5answers
169 views

Why is a steel security door safe if they can break the glass, slide their hand in, and unlock the door?

OK I had a hard time thinking of a good title but here's the gist of the problem/concern I have which I can't find an answer to anywhere online. Please note that this is a very specific but common ...
0
votes
1answer
34 views

Is this bell circuit safe?

I have an old-fashioned doorbell (like this one: https://upload.wikimedia.org/wikipedia/commons/c/c1/DoorBell_001.jpg) Is it safe to connect it directly to a power supply (I am using a ac/dc ...
4
votes
3answers
239 views

Changing fluorescent tube: how many degrees to turn?

I have a broken fluorescent tube (housing is intact, but it flickers instead of lighting up properly) that I have to change (bottommost type in the image). I can turn it about 20 degrees, but it ...
3
votes
3answers
97 views

How safe is it to plug in an extension cord that has a missing ground pin in to a GFCI outlet?

I know it will still provide power and such but what are the potential safety hazards?
3
votes
1answer
53 views

Splitting maul handle cracked… is it still usable?

I was splitting logs for firewood today, and must have swung wrong, because the outer shell of the fiberglass handle on my maul shattered. Although the core of the handle appears intact, and the ...
0
votes
0answers
35 views

Can a furnace safety limit switch with manual reset be changed out with an auto reset switch?

I have a Ruud natural gas furnace from 1987. Overall it works well. I've had my home warranty service send out an HVAC tech a couple times for the high limit switch needing to be reset. It's a manual ...
5
votes
4answers
544 views

How can I safely sand a small, thin item with a belt/disc sander?

I have small, thin items measuring roughly 4"x2" with a depth of only .33". I need to sand the back of them down evenly, and have been using a belt sander to do so. However, I'm a little nervous about ...
2
votes
1answer
46 views

In a solidly grounded wye service, is an open neutral an emergency?

Open neutrals in 120/240V North American split phase services are considered an emergency due to the fire and equipment damage hazard unbalanced legs pose. However, there are residential buildings ...
0
votes
1answer
85 views

Starting to build up my tools collection, is 110v preferable over 240v?

I am just starting out on my first major project this weekend and I am looking at getting some new tools. I've had experience using plenty of 240v power tools, but now that I am looking at getting my ...
13
votes
4answers
2k views

Safe/professional way to transport lumber with just a roof rack

I'm doing some home improvement, and have the necessary skills, tools, etc, for the job. There is one thing I'm lacking: a large pickup truck for transporting lumber. A buddy of mine used to have one, ...
4
votes
1answer
130 views

Is surface-mounted cabling on my basement ceiling a threat to my safety?

I am concerned about a wiring issue in a basement of a home I will be moving to. Someone put paneling on the ceiling and the wiring is stapled to the paneling and some of the wires are bundled ...
1
vote
1answer
58 views

Do I need to seal / moisture-proof an outdoor plug?

I have an outdoor plug socket (UK) in my garden that is ip66 sealed (basically the plug is inside a box that you can open and close). I intend to use this plug for a hot tub in our garden, but there ...
1
vote
2answers
62 views

Can I use a 2x6 beam stretched across a few of these roof rafters to support a hammock?

I want to hang a large hammock in my reading room. It used to be an open-air carport structure and so the construction is fairly lightweight. Here're some pictures of the ceiling/roof in question ...
0
votes
3answers
62 views

Is it safe to mix LEDs and incandescents in a chandelier?

I've been having an issue for a while now where my chandelier light fixture installed with six Cree 60W LED replacement bulbs flickers when I raise my traditional dimmer to max brightness. As I ...
1
vote
1answer
58 views

How safe are flammables as indoor cleaners?

I just cleaned some range hood duct with Seafoam. I was wondering how long after initial application things like it or rubbing alcohol remain active on the surface to present a fire hazard. How do you ...
0
votes
4answers
85 views

How to strip sheath off outdoor cable?

I am looking for a way to remove the protective sheath from a length of multicore mains electrical cable. It's rated for outdoor use and is VERY strong. Without butchering my fingers; trying to fine ...
2
votes
1answer
44 views

What kind of eye protection would I need for this particular spot welding system?

First of all, if this is the wrong StackExchange site for this question, I'm sorry. (If someone could point me to the right one, please do so!) So in this DIY YouTube video, the person makes some ...
2
votes
2answers
58 views

Electric Guitar at an outdoor show - Grounding issues?

I play electric guitar and today I had an experience where the guitar would give very slight tingling sensations - I wouldn't quite call any of them a bad shock because none of them really hurt badly, ...
0
votes
3answers
112 views

Light bulb socket cover

Where can I get a light bulb socket cover for my never used outside flood light sockets? I don't use the light fixture, the flood lamps are too heavy to keep in the sockets as the fixture comes ...
1
vote
4answers
87 views

Is it safe to encapsulate lead shot with epoxy?

I hope this is the right SE for this question. If not please point me in a better direction. I'm working on a project that requires a counterweight in a tight/organic space. I'm trying to maximize ...
1
vote
1answer
236 views

How can I safely connect a subpanel in a detached garage to the main with a 3-wire connection?

This weekend I attempted to install a breaker box into a pre-wired garage. The previous owners took the breaker box with them when they moved, and since I have installed quite a few subpanels, it ...
1
vote
0answers
52 views

Is this main box outdated and needs upgrade?

This house is 1970's built (UK) but not sure when the electrical wiring were done. The main box looks like in the attached picture. It seems it has only fuse boxes in it... and does not have any MCB, ...
0
votes
4answers
555 views

Using indoor-only Xmas lights — in the outdoors, where they'll get wet

Imagine that you bought a few strings of incandescent Xmas lights. They are rated for indoor use only. The tag says not to use them outdoors. They aren't any cheaper than the outdoor-rated lights ...
0
votes
2answers
86 views

Will 2 multi-port USB chargers overload a 13A socket?

I am a bit confused about some supposedly basic electronics concepts :/ (I kind of have an answer but just want to confirm) So let's say I have got this setup: A 13A 220V mains socket A 13A ...
5
votes
2answers
200 views

Potential Home Grounding Issue - Illinois

I recently bought a new manufactured home. There are instances where people have touched the front door and received an electric shock. Using a non-contact voltage detector, I confirmed that there ...
2
votes
1answer
103 views

Is this consumer unit wired safely?

Each of the two devices with yellow test buttons are marked '63A'. My assumptions: The set of devices to the left of each of these are connected to them The markings on each device in the form BNN ...
1
vote
1answer
88 views

How should I dispose of Sulfuric Acid?

I have about 30 ml of leftover Sulfuric acid. There is a similar thread on this board suggesting ways to dispose of it. They involve adding baking soda after adding the sulfuric acid to water. ...
0
votes
0answers
20 views

What load rating for securing bookcases/cabinets with anchors?

I have two full-height bookcases that I want to anchor to a concrete wall. Unfortunately I think I have only 3/4" max. embedment because of pipes, etc. I can only find two anchor options, a #6-3/4" ...
0
votes
2answers
127 views

Do paint fumes affect electronics?

I'm planning on painting a home office but I don't want to have to move all my equipment out of the room. If I keep my equipment inside and move it all to the center of the room will the fumes affect ...
1
vote
3answers
104 views

Protect from 3D Printer fumes [closed]

I'm planning to buy 3D Printer that can only print with ABS (Zortrax). I have a small child (3 months old) at my flat so I'm afraid that fumes can have negative impact on her health. What should I ...
0
votes
2answers
187 views

PVC piping for low-pressure air line?

I'm finding that I need more aeration for my aquaponics fish tanks than is practical to supply by buying small consumer-grade air pumps for each tank. Additionally, typical consumer pumps have issues ...
0
votes
1answer
42 views

Strength of steel tube

What is the minimum size rectangle steel tube needed to lift 500 lbs with the fulcrum in the middle of a seven foot tube? Assume a minimum of 1.5 inches outside dimensions, long side vertical. ...
-1
votes
2answers
344 views

Safety with Dremel 8050 Rotary tool [closed]

As of July 6, 2015: Dremel model 8050 cordless Lithium Ion 8 V Rotary Tool has been pulled and is no longer available for purchase at Lowes, Home Depot, or Amazon. Dremel Customer service advises "do ...
1
vote
0answers
102 views

Is it safe to use pressure-treated wood for a workbench in my shed?

I have some leftover PT wood from building a platform for my shed. I'd like to use it to build a frame for a worktable that I can place inside that shed. It will stay dry in the shed, but the shed ...
2
votes
2answers
240 views

Have an unused receptacle in the ceiling that used to have a fan. What is safe way to cap it?

I have an unused receptacle in the ceiling that used to have a fan attached. Now the wires are dangling out of the box (all are wire nutted to keep separate except the ground). If I go to and get a ...
2
votes
1answer
228 views

Can I terminate my dryer vent next to my gas meter?

Background I want to move my electric dryer. This involves moving the exhaust vent. This question is about where I can safely terminate the vent duct on the exterior of my home. I already understand ...
0
votes
1answer
358 views

Is it okay to throw paper towels & rags with mineral spirits in the trash bin?

Newbie painter here. Is it okay to throw rags and paper towels that soaked mineral spirits into a plastic bag and then into the trash can?
2
votes
4answers
209 views

Secret documents digital safes without an overriding key? [closed]

Are there any safes which can be opened with a programmable keypad combination or thumb fingerprint but do not come with a key? I am concerned about the fact that if somebody steals my key they will ...
2
votes
2answers
127 views

Are two prong cords safe? Audio Interface

I have an audio interface called an m-audio profire 2626 (made sometime in the late 2000's) that's just a solid metal box that takes inputs form mics and 1/4 jacks - it only has a two prong plug-in ...
0
votes
0answers
38 views

Advantages/Disadvantages of “pig snout” style or common two filter respirators

I'm looking at getting a respirator for mainly woodworking. I have seen the two filter type is very popular. I do not know though, with the two filter style respirator do you always need a filter on ...
3
votes
1answer
62 views

If a Drill's Clutch doesn't properly align the gears, can it cause the Chuck to loosen?

So I was using my hammer drill to drill into some masonry when I ended up hitting the clutch to a lower setting. When this happened, the trigger remained pulled for a moment, but the bit nor the chuck ...
0
votes
2answers
124 views

Is it safe to have a wall wart plugged in to a receptacle in an attic?

I'm trying to move my router to get better reception through my house. There is a perfect spot just below the ceiling in the middle of my house. I can run the CAT5 no problem, however, I'm worried ...
5
votes
1answer
3k views

At what height should CO detectors be installed?

I've got a Carbon Monoxide (CO) detector (BRK CO250B, instruction sheet PDF) that I am looking to install in our house. All of the bedrooms are on the top level of our quad-level house, and I'm ...
1
vote
1answer
348 views

Light socket adapters - are they safe?

I'm in the process of building a little grow cupboard for herbs and vegetables and want to make a row of 24-30W CFL's (compact flourecent lights) and have found these plug adapters: ...
1
vote
1answer
130 views

Weight bearing glass furniture

I've seen some furniture (beds, tables, media units) that are made of wood but sit on glass legs. See this bed with glass legs. The glass legs are usually rectangular and appears to be double ...