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Apr
30
comment How can I connect two indoor ductless A/C's to one compressor?
The capacity of the unit is obviously a concern. A compressor designed for one indoor unit is not likely to work as well with two. I know you've said that you are only going to use one at a time, but you should also consider what to do when you resell the house. A home inspection may pick up on that, and a smart buyer will want that to be fixed (either by subtracting money or getting you to buy a new unit).
Apr
30
revised How do I drill a hole in a shelf without going all the way through?
edited title
Apr
30
comment How do I drill a hole in a shelf without going all the way through?
I like this solution over using a drill stop simply because it's effectively no-cost (you likely have tape on-hand). I agree with the potential drawbacks mentioned though, so like always, the best solution depends on the exact situation. If you're drilling a couple approximately 1/2" deep holes into a 1" surface, the tape slipping a bit is not a big deal - it's just there to guide you. If you're drilling 50 holes that are all precisely 7/16" deep into a surface that's 1/2" thick, tape (and a hand-held drill) is probably not going to work out very well.
Apr
30
comment is it possible to do a 3 way switch if power source is in the second switch?
Should also note: when you're using a white wire as hot in this way, you must mark it as hot: this is done using red or black marker or electrical tape. By code white means neutral.
Apr
30
comment is it possible to do a 3 way switch if power source is in the second switch?
When you say "you need 4 wires", like @staticsan I read that as 4 + ground. Ground has to go everywhere, so it is generally not mentioned. This is a standard convention- For instance, if you go buy your standard NMD/Romex "14/2" wire, you'll get 2 14AWG conductors (white/black) plus an unshielded ground. Likewise, 14/3 (which is probably what will be used in this situation) refers to 3 conductors (probably black/white/red) plus a ground (unshielded or green).
Apr
27
comment Are galvanised steel pipes suitable for supplying hot water?
I'm having a hard time finding good citations, but: it is thought that hot water affects the galvanized coating and increases the rate of corrosion and build-up inside the pipe. Galvanized pipe is apparently no longer allowed by code in Canada for (treated?) potable water (inside, anyway). Depending on the chemical composition of your water (pH, dissolved minerals) it may react with the pipe, causing other contaminants (a concern mostly if you are not on city water). Though you don't typically drink shower water, it does get absorbed into your skin and dispersed into the air (and your lungs).
Apr
27
reviewed Approve How far can I move ceiling joists up?
Apr
23
answered Is it safe to run a USB cable inside a wall?
Apr
23
revised What are the pros and cons of different types of smart switches (that are on the US market) ?
added more to ubp, insteon
Apr
12
answered Can I run this sump drain underground?
Apr
3
awarded  Taxonomist
Apr
3
reviewed Approve At a 6' span, how much can an SPF 2x4 turned on 3.5" end support?
Mar
27
awarded  Enlightened
Mar
27
awarded  Nice Answer
Mar
26
comment Surveillance System and Home Automation in Europe
In addition, many stand-alone security systems have interfaces to insteon/UPB/etc just to signal armed/disarmed/alarmed, so if that's all you need it may give you some more options in choosing a security system. You need to define what it is you'd like the automation to do, and then you can figure out what products to use and how much it will cost to achieve those features.
Mar
26
comment Surveillance System and Home Automation in Europe
Are you tied to X10 specifically? X10 is widely regarded to have many problems (eg, see diy.stackexchange.com/questions/333/…). It is very susceptible to noise and interference, including false signals that trigger lights on/off (or with a security system: false alarms), and missing legitimate signals due to interference. There are many newer systems that work much better.
Mar
26
answered What could cause tap water to become smelly after a while?
Mar
26
revised How can I remote control a switch for a pool pump?
added 713 characters in body
Mar
26
answered How can I remote control a switch for a pool pump?
Mar
25
awarded  Enlightened