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    Retaining wall block question

    I have seen these blocks be used in a few retaining walls around where I live but I asking around I cannot find who makes them or where to buy: Any pointers would be helpful. Thanks!
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    Why can two hots feed a single neutral?

    I get the concept of a single hot/neutral wire pair. What I do not understand is two hots and single neutral. Seems like the neutral would heat up .. why does it not?
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    What is on my floor?

    Bought a house that was built in 2011 about a year and half ago. Zero time to do anything except sign and move. Well. Had time to imagine what it would be like to have epoxy on the garage floor! :D The floor has a broomed finish that looks like something that you would find on a sidewalk...
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    Compressed air fittings/couplings: why I think P series is the best

    I have read a lot of threads here on GJ where the question that is asked is along the lines of "what fitting should I standardized on". With so many to choose from it is a valid question. However. :D There are a ton of answers that basically say I use "x" without really stating why. I would...
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    PoCo service entrance aluminum connections missing inhibitor

    My house was built in 1984 and the installed breaker panel is only 100 amps. In doing my preparatory work imagine my surprise when I popped open the meter box and was greeted with 200 amps to the box! So the wires that feed into the house have been covered with an inhibitor, but the wires from...
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