New answers tagged

4

Torquing a bolted joint serves a very specific purpose - to set the clamping force exerted by the bolt on the joint. By applying some specific torque to a bolt with a certain thread pitch, the effect is to stretch the bolt by a specific amount. The bolt then acts like a spring, clamping the joint together. Overtightening the bolt applies too much clamping ...


2

No. Automotive parts (generally anything you'd find a torque spec on) and fasteners are engineered to a degree that residential galvanized and gas piping simply isn't. Automotive parts are designed to accommodate disassembly and maintenance - water pipes are typically not. It's possible to get a bolt on, say, a brake caliper or a wheel hub on tight ...


2

There are a couple things you can do depending on what the cause is. If the entire cover plate stands proud of the wall, then it probably means the receptacle itself is not far enough back. Make sure it is screwed all the way into the box and that the box is set at a proper depth into the wall. If it's unfeasible to adjust the box, and you're only dealing ...


0

If the ladder sections (base and extension) are not square and plum to each other there is a chance that it will not preform safely. Depending on how much deviation there is between the two sections you should be very cautious when using the ladder fully extended. The top extension is secured and guided by an inter-locking rail built into the bottom ladder. ...


0

also those NON-contact voltage detectors are all different, even identical model/brand. i've always found that alot of them detect voltage from 1-inch and greater distances. i've gotten lucky with a pair of Klien ones that won't detect until your actually touching the wires insulation. i recently bought a really nice looking one with a vibration motor and ...


1

The Operators Manual of each piece of equipment will tell you what PPE to wear and what NOT to wear. Check the Owners/Operators Manual for each specific tool you are concerned about.


0

Recently they ask me about this, an older employee told me he has never use gloves while operating a circle saw or a grinder because he feels the the use of gloves increases the risk of your hands getting caught in, but with every incident involving rotating saws or machinery I fell the need of asking certain questions, If your hand got caught up by the saw ...


3

Short-circuit current is the amount of short-circuit current the device can safely handle, so it should be greater than or equal to the short-circuit rating of the device protecting it. For example. If the GFCI has a short-circuit current rating of 10 kA. Then the short-circuit protection device protecting it (likely a circuit breaker), should have a ...


3

I checked a few GFCI data sheets and they all listed either a 10kA Short Circuit Current Rating or Max Interrupting Capacity. Leviton GFCI Cooper Industries GFCI Hubbell GFCI I'm assuming that this is similar to the 10kA rating on common household circuit breakers where the device is required to break at least 10kA. Cooper Industries has a PDF that ...


-1

It is always wrong and unsafe to connect a single load (hw heater in this case) to power via two breakers. As already mentioned, this has the potential for live power where unexpected. Given multiple meters and power circuits, it would be difficult to get the two supplies in proper phase. That would be the first unexpected result with the potential for ...


3

If your house burns down and the inspectors find this code violation, you run the risk of them using that as a reason to not pay the claim. If an electrician later works on this and electrocutes themselves because they didn't know about the unusual configuration, you may also be liable. Not worth the risk. If saving money is the objective simply buy a ...


3

This would be a violation of the Code. The panels that the conductors originate from will be ferrous metal and you will have inductive heating passing in and out of the panels. That is why the Code prohibits single conductors except under very specific circumstances. 300.3(B) Conductors of the Same Circuit. All conductors of the same circuit and, where ...


35

WARNING: This answer describes a fictional installation, and is NOT meant to be a solution to a problem. This setup should NEVER be implemented in the field, as it is unsafe, and violates countless codes. These codes are intentionally ignored in this answer, in an attempt to keep the answer short and to the point. There's likely no way to make this ...


1

I think you might be going about this the wrong way. I saw in comments on your question about using a double-cylinder deadbolt on your front and rear entry doors. This is a bad idea, and may even violate local building codes, depending on whether your state/county/local authority has adopted the International Residential Code(IRC). According to the above ...


1

Polycarbonate is used for bulletproof glass in passenger trains. You don't have to worry about cinder blocks coming at you at 125 mph, so you don't need it 7/16” thick. Does the door have a normal glass panel in addition to the stained glass? If so, replace with polycarbonate. If not, alter the window molding to fit it. Nobody but you will even know it's ...


7

You could just chill out. Putting up bars or plastic on that door is truly ghetto. Doors like this are not inherently unsafe at all. Your door is appropriate for your neighborhood. Your door would be unsafe or inappropriate for a bad neighborhood or an apartment building. Having this glass probably does not effect your chances of burglary by ...


7

You could consider attaching a thick acrylic or other plastic panel that covers the interior of the glass and is firmly screwed to the door. The edges can then be covered with molding. Such plastics are shatter resistant. While they can be broken, they will not yield to the tools of most casual home intruders (unless they carry sledge hammers or blow ...


2

Nearly any door can be broken with minimal effort. The vulnerabilities are numerous. You are correct in identifying glass as one of them, but even with no glass, kicking in the door at the lock is another easy method unless the strike plate has been replaced with a special thick steel high-security model. Hinges can be another vulnerability if they're only ...


3

It looks like a battery operated (DC) rather than transformer operated (AC) bell. Start off by hooking it up to a 6 V or 9 V supply for a couple of seconds and see what happens. You don't neeed a series resistor if your supply voltage is right. The coil resistance will limit the current.



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