18,554 reputation
34499
bio website gregmaclellan.com
location Canada
age 33
visits member for 4 years, 9 months
seen yesterday

Started working for my dad's water treatment company in my teens, installing and repairing pumps and water treatment systems. Later worked on automated monitoring and control systems for small water treatment systems, including PLC programming, panel design, systems integration, and designing and building our own SCADA software package. Currently employed as a senior software architect at a print software company.

Renovations around my houses have included installing complete bathrooms (both reno and adding new), complete basement gut and reno, and all types of electrical, plumbing, and ethernet/video/audio cabling. Also have a particular interest in home automation -- my current house has several rooms controlled using Insteon gear.


Mar
10
comment Will I get electrocuted if I contact a live wire on an earthed appliance?
To clarify: The ground protects being shocked by the device if there is an internal wiring fault: instead of becoming energized waiting for a path to ground (eg, you) to come along, the chassis is already grounded and the resulting current flow will trip the breaker immediately. If you are touching a grounded appliance and then grab a live wire with your other hand, it's much, much worse: you'll form a really good path to ground that involves electricity travelling across your chest/heart, and there's a very high chance you'll be dead within a couple seconds.
Mar
6
comment What should I do with an unused C wire when installing a thermostat?
I would also put a small wire connector or piece of electrical tape over the end of the clipped wire (if left energized). There's still a (small) chance the blunt end of the wire making contact with something and causing problems.
Mar
6
answered What should I do about a switch that feels warm and arcs when toggled?
Mar
5
comment How to re-insulate between roof and top floor?
What's in there now? Is there soffit venting in place?
Mar
5
comment Do I have to run new wire when replacing my electric oven?
Per questions below: what type of wire? Copper/aluminum, PVC/cloth covered? If you can read markings on the wire and/or take a picture both are helpful, and will help people give advice on using it beyond just if the conductor size is adequate.
Mar
4
awarded  electrical
Mar
4
comment Why doesn't cold water stop when the valve is turned off?
The water stops, but also keeps going? Must be Schrodinger's shower.. Really though, can you better describe the problem, and maybe take a picture of the plumbing?
Mar
3
answered Integrating hard-wired smoke detectors with fire sprinkler waterflow sensing
Mar
3
comment Shallow well with two pressure tanks
Note that this won't make the pump run less, it will just make it come on less often. When it does run, it will have to run long enough to pump an additional ~40 gallons to fill that new tank.
Mar
2
comment Reverse wiring basement lights
Where the heck does referring to conductors as "rope" come from?? I've never heard that before, either on this site or from any actual contractor or electrician I've worked with.
Feb
27
comment How can I extend an old ceiling box to fit a SmartHome relay?
That is a dual-band module.. In fact, I'm fairly certain the only practical difference is the load rating (15A vs 20A). Full manual. You can actually even wire a normal SPST switch to the "sense" wires on this thing (provided you have the wiring to do this) and it'll actually function as a 3-way switch. I do this with my kitchen range hood: it's controlled via an Insteon keypad, or via the switch on the hood itself. (The "on" and "off" labels on the hood switch are no longer meaingful, but that's only confusing the first time)
Feb
27
comment How can I extend an old ceiling box to fit a SmartHome relay?
Not sure if it makes a difference, but Insteon makes a much smaller version called the Micro on-off module that is better suited to installing in junction boxes like yours. Depending on existing space, it may even fit without modification.
Feb
24
comment Converting 4 wire supply to 3 wire outlet
Likewise, normally if someone says "3 wire outlet" I would think a 4-prong 240V stove or dryer plug, but in this case I'm not sure exactly what you mean, eg: a standard 120V receptacle or a p3-prong dryer outlet](i.stack.imgur.com/rHbwr.jpg) or similar. Is there a double-pole breaker feeding this circuit? Is it a kitchen, garage, or workshop area? It's common to have a receptacle in those locations split with each half on its own circuit, to handle multiple high-current appliances and tools.
Feb
24
comment Converting 4 wire supply to 3 wire outlet
For reference, the ground (bare or green) wire is not counted when describing wires. For example, a "14/3" wire has 3 conductors (typically red, black and white) plus ground, all of which are 14AWG. A "12/2" has 2 conductors (white, black) plus ground, all of which are 12 AWG. The wire you described is a 3-conductor wire, so it will likely be a 14/3 or 12/3.
Feb
23
comment Is fixing these stairs as simple as just replacing the stairs and supports?
@TylerDurden Can you cite what the issue with these is, specifically? I was inclined to agree with you, until I went searching for code and found that attaching treads using cleats is acceptable (though best practice is to glue and screw). As far as I can see, the IRC only states live load requirements (and tread/riser dimensions). Can anyone cite specific relevant IRC saying this is allowed or not allowed?
Feb
23
answered run water supply line to fridge from cold side of water heater
Feb
23
revised Can I run a central air conditioner in the winter?
edited body
Feb
20
revised Freezing problem
edited tags
Feb
20
revised How can I determine why there is no water coming from my hot taps?
edited tags
Feb
20
revised What are the steps to troubleshoot no hot water coming out of just one faucet?
edited tags