16,561 reputation
13881
bio website gregmaclellan.com
location Canada
age 32
visits member for 3 years, 9 months
seen 4 hours ago

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


9h
revised Do brass ball valves have to be oriented with the flow of water?
added 57 characters in body
9h
answered Do brass ball valves have to be oriented with the flow of water?
Apr
14
comment How much energy will continuously running a furnace fan use?
@alx9r That is fair, but I will also say I can feel a difference in the force of air coming out of the registers in the two modes. It's particularly noticeable when just the fan is on and then the heat turns on (you can actually hear and feel the air velocity slow down). So in terms of this question, the measurements I made are not that useful, but the fan is definitely going faster in fan-only mode vs heat. I've been doing the same thing as TomG for last 1.5 years (have a schedule that runs the fan for 10-15 minutes every hour or two) so I notice the fan speed change at least once a day.
Apr
14
comment Wireless Thermostat C-Wire Substitute
Very nice idea to just use the 'fan-only' wire as common, since it's practical to live without fan-only (whereas clearly it is unthinkable to live without wifi connectivity). One note though: on my furnace, the fan-only (G) connection actually runs the fan at high speed (verified by measuring the current draw using an ammeter). Particularly interesting is when heat is called for while fan-only is on, the furnace slows down the fan and then fires up the burner.
Apr
10
comment Can armored bx cable come into contact with other metal objects?
"BX cable" is the product name of the original armoured cable, which has since been replaced by modern type AC. It's now used colloquially in the same way that "Romex®" (a brand name) is often used to refer to any Type NM cable.. in the same way people use "Kleenex®" to refer to any tissue paper. That said, when someone says "BX" it's not clear if it's AC or MC. In my region I typically only ever come across MC (I don't think the box stores even sell AC), and I used to always call that "BX" as everyone else I knew did.
Apr
9
answered Dead Bolt Removal
Apr
9
comment Dead Bolt Removal
This is one of those questions where a picture can help immensely.
Apr
7
comment What would cause lack of Oxygen in cellar
@DogEars As already mentioned many times.. Seriously -- don't test for possible presence of flammable gasses by lighting a freaking flame!! You are on the path to a Darwin Award here...
Apr
1
awarded  Booster
Mar
30
awarded  Nice Answer
Mar
28
answered Adding a C wire to a new Honeywell WIfi Thermostat
Mar
25
revised How to SLIGHTLY widen bored hole in 2x6
added 472 characters in body
Mar
25
revised How to SLIGHTLY widen bored hole in 2x6
added 57 characters in body
Mar
25
answered How to SLIGHTLY widen bored hole in 2x6
Mar
24
comment How can I fix a leaking expansion tank?
@Bill It really depends on where you have valves. The end result is you want to make sure that the part you're disassembling is not pressurized. Failure to do so will generally result in anyone who happens to be watching to break into uncontrollable laughter, and you having to change into dry clothes (and learning a hard lesson about shut-off valves).
Mar
24
comment Why do I have 170hz rather than 50hz on my lighting circuit?
My first thought was this was after a fluorescent ballast as well.
Mar
24
comment What could be tripping multiple GFCI breakers?
Tugging on live wires is not at all a good idea. If they are in fact loose, doing this will likely cause some reasonably spectacular sparks that you'd probably not want to be within arm's reach of. While most of your suggestions are good, the power from the meter needs to be off to do most of this work.
Mar
17
revised Please help establishing a C wire for new tstat
edited tags
Mar
14
awarded  Notable Question
Mar
14
awarded  Notable Question