16,851 reputation
14086
bio website gregmaclellan.com
location Canada
age 33
visits member for 4 years
seen 15 hours ago

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


Nov
9
comment How is pre-wiring done for motion sensors / alarm system in new construction?
Wired alarms simply work better (no interference, no batteries to change), and are cheaper. The idea of pre-wiring is to avoid the only option being a wireless alarm. For example, a wireless door contact is ~$50 (and requires periodic battery replacement), and a wired one is <$5 (for sensor + cable). May still make sense to use SOME wireless sensors later, but it's not that difficult or expensive to pre-install recessed door contacts, and wires for motion sensors. I'm considering this as a DIY pre-wire -- the economics may change if you have your contractor or a pro alarm company do it.
Nov
9
awarded  Nice Answer
Nov
8
answered What should I keep in mind when building my house myself?
Nov
8
comment How is pre-wiring done for motion sensors / alarm system in new construction?
Sorry, I meant to add in my question that the alarm may not be installed right away, so it would be better not to have wires sticking out of the wall. Adding an alarm in an existing house can be difficult, especially running wires on exterior walls, and for <$100 of cabling it seems like a logical thing to do before drywall is up.
Nov
8
revised How is pre-wiring done for motion sensors / alarm system in new construction?
added 59 characters in body
Nov
8
asked How is pre-wiring done for motion sensors / alarm system in new construction?
Nov
8
answered Push button lock unlocks when knob turned
Nov
7
revised Can a garbage disposal handle waste from both a sink and a dishwasher?
added 261 characters in body
Nov
6
answered Can a garbage disposal handle waste from both a sink and a dishwasher?
Nov
6
answered How do I increase the capacity of a small humidifier?
Nov
5
answered How should I use heat tape?
Nov
5
comment How should I use heat tape?
It would help to know where you're considering using it (inside, outside above or outside below ground and how deep)? What is the pipe material? What is the water supply? Have you had freezing problems in the past?
Nov
4
comment What hardware do I need to have a wireless light switch in UK/Ireland?
Unfortunate that What are the pros and cons of different types of smart switches (That are on the UK maket)? was never answered, as it is one way that would work.
Nov
3
awarded  Nice Answer
Nov
2
comment Is the carpet in my condo one solid continuous piece?
Good installers will also try and minimize seams, avoid narrow strips (eg, less than a couple feet wide), and avoid putting seams in high-traffic areas
Nov
1
comment Where can I find a Time Restricted Keypad Lock?
Most of these use electric strikes, which can be either fail-safe (unlocked) or fail-secure (locked) -- most are fail-secure. Magnetic locks are by definition fail-safe (unlocked), although some do have batteries that will allow them to continue operating in case of power failure.
Oct
28
answered Where can I find a Time Restricted Keypad Lock?
Oct
26
comment What's the normal duty cycle of a refrigerator compressor?
@BMitch: Didn't know that. Worth checking before you buy then. The one I have (which is not an actual "Kill-a-watt") works, and in fact I had my fridge plugged in for a week.
Oct
26
comment Why do the radiators in my home heating system get extremely hot?
Do you know for sure that the system worked properly last year? Any chance that it was doing the same thing, but you didn't notice? Has there been any work done on the system since then? A picture or more details about this "electronic device" that lets you switch CH/HW may help. My suspicions are something is wrong with that control (it's not set correctly, broken, misconfigured, or miswired).
Oct
26
comment What's the normal duty cycle of a refrigerator compressor?
You could try plugging in a kill-a-watt (or similar product), to see how much energy is actually being used. You should be able to compare this to the EnergyGuide rating to see if it's running excessively. (Hint: search for GSH25JSX*)