2,214 reputation
159
bio website none
location California
age 55
visits member for 2 years, 2 months
seen Apr 14 at 5:46

Interested in plumbing, networks, electrical, HVAC.


Apr
9
comment Do I need a ground for a new 240 volt 20 amp circuit?
Given that he has a transformer, I would guess a ground is only needed for the secondary side of the transformer. Does anyone know?
Apr
9
comment How should I go about installing a 12 volt DC residential circuit?
You are right, some apple laptop power supplies are wall warts. I have never owned an apple laptop thus I had never seen an apple laptop power supply. Anyway, if one had enough load that more than 15 Amps at 12 V was required, one could use the same technique as regular household power wiring: have multiple power circuits.
Feb
12
awarded  Yearling
Sep
28
revised Can (and should) I replace the hose connecting a cold water expansion vessel to the cold water supply myself?
replaced reasonable with a better word
Sep
26
revised Washer Dryer Combo vs. Separate Units
fixed spelling of Separate
Sep
21
comment What size extension cord should I use for multiple computers?
In fact, many newer homes (2000 or later?) have a service of 200A@240VAC which could supply as much as 400A@120VAC. Mine is an example.
Sep
19
comment Why does my water smell bad after the water softener?
In my opinion, calling a greensand filter an iron filter is accurate. advanced-water-systems.com/technical/faqs/faqs_greensand.html
Sep
19
awarded  Excavator
Sep
19
revised How can I automatically disconnect a coffee maker and space heater without tripping the building's 20A circuit breaker?
correct spelling of SPDT, clarify connections
Sep
19
answered Does a Daikin AC remember the settings when it was last turned on, or what the remote is set to on power-on?
Sep
19
revised Does a Daikin AC remember the settings when it was last turned on, or what the remote is set to on power-on?
make title more specific
Sep
16
comment Can I use EPS concrete for a fire bowl?
You cite the flash point of DIETHYLENE GLYCOL as 255 degrees in claiming that a Sterno flame can easily melt EPS. In fact, flash point measures the temperature at which a fuel will ignite. In determining whether a flame will melt EPS, what you want is the flame temperature of the fuel in use. That would be parameter 4.12 in your MSDS. en.wikipedia.org/wiki/Adiabatic_flame_temperature
Sep
9
comment How do outdoor mist-cooling A\C units fare in real-world usage?
I liked "themister"'s web site, the information related to thermodynamics on it was accurate and correct. I'm not familiar with the filter chemistry they use. It is very interesting that it uses very little water, about 5 gallons per hour. You might be able to use DI water in that case. RO water boosted by a pump would also be possible. The waste would not be significant and you're not correct about the waste being high-salt. RO does not add minerals/chemicals, it just filters them out.
Sep
9
revised How do outdoor mist-cooling A\C units fare in real-world usage?
and -> an
Sep
6
revised Can I connect two separate ducts systems together?
separate was misspelled. it's was corrected.
Sep
6
comment Where in the breaker box should I terminate the neutral wire from my dryer circuit?
I think you're not completely there yet. The feed from the utility's pole transformer has a neutral, not a ground. The neutral is connected to ground at the service panel but is still considered a neutral. en.wikipedia.org/wiki/Split-phase_electric_power
Sep
6
comment Assuming you can go either way, is it better to install a Multi-split or multiple Split Air Conditioners?
Assuming an equal load at the evaporator, the larger condenser will allow cooler refrigerant. If two condensers are made of the same material and construction, then the surface area determines the thermal resistance and a larger area means less resistance.
Sep
6
comment Would insulating a basement prevent it from passively cooling the house in the summer?
I don't see where he said he wanted to "limit the cooling effect in summer".
Sep
6
comment Would insulating a basement prevent it from passively cooling the house in the summer?
It's unconventional but not unprecedented! Agree about the need to deal with condensation. campmackinaw.com/earth_tube_cooling_heating.htm
Sep
6
answered Would insulating a basement prevent it from passively cooling the house in the summer?