17,489 reputation
14396
bio website gregmaclellan.com
location Canada
age 33
visits member for 4 years, 4 months
seen 16 hours ago

Professional software developer, with several years working on industrial control and monitoring systems. Slowly remodeling parts of my house.


Jun
23
comment Does it make sense for a high pressure water motor to run 24/7?
I'm not sure if you're considering buying the entire building or just an apartment; but if you're buying the building it would also be worthwhile to look into how this system operates. Ideally the apartments draw from the tank, which is in turn kept full (using float switches) by the well pump. This keeps the water in the tank 'fresh', allows emergency use with no human intervention, and gives you a buffer if demand temporarily overpasses supply. You'd also ideally have a continuous level monitor or at least a low-level alarm to alert you before the tank runs out.
Jun
23
comment Does it make sense for a high pressure water motor to run 24/7?
Are you sure he meant 'spinning 24/7' and not just 'powered on 24/7, but controlled via pressure switch so it intermittently turns on and off as needed to keep the system pressurized'?
Jun
20
comment Installing cable trunking on ceiling without damaging the ceiling paper
Wallpaper on the ceiling? Yuck, maybe it SHOULD be "accidentally damaged". :) On a serious note, I've used the 3M Command scripts and was impressed by their ability to be cleanly removed (though I removed after only a few months), but I'm not sure if it would work as well on wallpaper. I'm confident at the worst it would do the same and most likely less damage than the adhesive usually on those conduits, but you'd have to weigh that risk considering your rental agreement.
Jun
19
comment Networking Phones Together in Building
But I do agree, this is off-topic. @David you need a Siemens HiPath switch, and then you need to learn how to program it. You might be able to do this, or you may spend a lot more time than if you were to get a simpler system. I'd suggest you come up with criteria you need from a phone system first, and then if this system satisfies those needs you can consider using it.
Jun
19
comment Networking Phones Together in Building
@sr_1436048 is incorrect about needing 3 lines: You can run a PBX with 0 outside (aka PSTN aka trunk) lines if you want. The number of trunk lines dictates how many simultaneous external calls can be handled. The smaller "key system" PBXes usually have each line accessible using a button on the phone and are a bit simpler; when you get into larger scale PBXes with more than ~8 lines this becomes unmanageable and different methods are used to handle call routing and transfers.
Jun
19
comment Can I attach 2x4s to the studs in order to mount my TV?
Depending on the weight of the TV, you might also be able to use 1-by stock (eg, a 1x8) or even a piece of plywood on the surface. Be sure to use lag bolts still. Keep in mind that the further the TV is away from the wall, the more force it will have on the attachment -- mostly a concern if the mount is articulated. I have a couple computer monitors at home on articulated arms attached to 1-by stock on the outside of the drywall, but if I was doing say, a 50" TV on an articulated arm, I'd use a 2x4 or 2x6. Or just get a mount that was 24"+ wide.
Jun
19
comment How do I convert a 3-way circuit with two lights into two 3-way circuits that control each light separately?
@bib My diagrams show a couple possibilities of how it's setup NOW (as the text above them indicates), because the final wiring diagram entirely depends on existing setup. If you'd like to draw the wiring diagrams for all possible variants then post your answer and I'll upvote it :) Also if you read Andrew's replies above, he is talking about one of the lights being a light+fan combo, and actually controlling the fan separately. At this point, I don't know if he wants the two lights separate (one of the lights really being fan+light), just the fan separate, or all three separate.
Jun
18
comment Which cylinder door lock shield design is most secure?
Just a comment: If someone approaches a lock with a drill capable of drilling through it and has the intent of doing so, I highly doubt they'd be deterred by a hardened lock cover and simply give up. There is always a 'weakest point' in your security, and at best upgrading to a lock like this will simply shift your lock a tiny bit further away from being the weakest point. If it IS the weakest point, that probably means your house has no windows, re-enforced concrete walls and the door can withstand a battering ram. Sounds lovely.
Jun
18
comment How do I convert a 3-way circuit with two lights into two 3-way circuits that control each light separately?
As an alternative you could replace the existing switches with 'smart' switches or keypads (eg, Insteon, UBP or Z-wave) and install in-line modules in the fan to get independent control everywhere, without opening walls. The hardware is more expensive and it's a bit more technologically complicated, but it may work out depending on the difficulty fishing wires and the types of repairs you need to do after.
Jun
18
comment How do I convert a 3-way circuit with two lights into two 3-way circuits that control each light separately?
@Andrew That is also possible, but a bit different from what I showed and different from what you asked. There are many options, and it really depends what you're willing to go through -- eg are you okay with opening drywall? You can have 3 switches at two locations to control each light AND the fan independently (which means a few new wires and lots of holes in drywall), or depending on the current wiring you may be able to have one switch control both lights, and the other switch control the fan WITHOUT having to open walls up.
Jun
17
comment Digital TV pixelation of picture at Manchester using Winter Hill
The faceplate is loose, or the connection is loose? Have you taken the faceplate off to see if the connection on both sides is good? Tried another cable? Checked any other connections between there and the antenna? Checked the antenna itself for signs of damage? Has anything obvious changed since it last worked? Are there any trees in the way (leaves can block signals; may work in winter but not spring)? With a bit more information on the situation (pictures help a lot) we might be able to help. Complaining about previous people doesn't add anything useful to your question.
Jun
9
comment Do I need to install carbon monoxide detectors to be up to code?
@JMD Updated with a note on applicability. Sorry, I was approaching it thinking of the question as "can I get away without installing a CO detector?" and not "Am I doing everything required to comply with codes?" which I think is what your intention actually was.
Jun
9
comment Do I need to install carbon monoxide detectors to be up to code?
@ThePopMachine What, you don't have that date where you live? (thanks, fixed)
Jun
5
comment How do I wire LED lights directly from the panel?
This answer is good and I'd suggest two things additionally: Use a separate transformer for each room (you can use a smaller transformer for the shorter strip, obviously), and plug the transformers into 120V outlets switched by regular wall switches in each respective room. The 120V wiring for the switches and outlets is absolutely standard stuff. The benefit of this is that the transformers are only on when the lights are on, instead of 24/7 (they still draw power, even with no load).
Jun
4
comment Can I run 2 well tanks from 1 well
Do you mean putting a second pressure tank in the garage? A pressure tank's job is to provide a buffer so the pump doesn't rapid cycle every time you open a tap. If you have a tap open for a while (watering lawn, shower) it's normal that the pump would cycle on/off every few minutes. Can you better explain what you mean by "the tank in the house is not sufficient for watering the lawn"? eg: Are you actually running out of water, is the pump rapid-cycling, or something else?
Jun
2
comment Wiring LED undercabinet lights to switch (US based)
You're planning on mounting the transformer to the bottom of the cabinet, with the romex wire that comes out of the wall directly hardwired into the transformer? I'm not sure if you can hardwire it like that exactly, but you most definitely can't have the contacts on the transformer exposed like that- it would have to be in an enclosure. A picture of where the wire comes out now may help someone provide suggestions.
May
23
comment Can I run heat tape on my water pipe behind drywall without hardwiring?
Why do you even need the heat tape -- is the basement unconditioned? Seems very strange that you'd have drywall up if that's the case. Generally a basement would have the exterior walls insulated, either have HVAC vents (though perhaps not as open as the rest of the house) or have radiators/other heat source. Especially if the floor between basement and main floor is uninsulated, there will be a lot of heat loss and it will be noticeably cold on people's feet (even if the ambient air temperate is otherwise ok, generally this will cause people to still feel cold).
May
22
comment Should I expect a level ceiling when my kitchen was completely gutted?
"Change the ceiling joists"?? Yikes.. That is a pretty major structure modification, which could easily double the cost of a typical kitchen reno. The typical way to level a ceiling is with strapping and shims, which would easily take under a day for the average kitchen, and not involve any structural engineers..
May
21
comment What is the best way to run underground electrical and low voltage in the same trench?
You should also bury some underground marking tape a few inches below grade. This is so if someone digs they will find the warning tape before they find the conduit/wire.
May
20
comment How to remove wires from doorbell
I assume that you don't intend to replace the door bell? And that "look good" is a relative term, considering it was mounted on a piece of crappy-looking weathered plywood?