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Jan
8
comment Can I take a 220 line and convert it to a regular house outlet what would be the damage?
Kitchens require GFCIs by code in many places; how is this going to work with a GFCI? The current on the neutral and the hot is going to almost always be different.
Jan
5
awarded  Critic
Dec
10
comment Safe/professional way to transport lumber with just a roof rack
Good question, and some good answers. I would encourage you to learn how to tie a Trucker Hitch, which is the knot used to tie a load to a vehicle. It looks complicated but when you break it down it is quite simple; a loop on the standing part allows you to make an impromptu pulley to tighten the line with advantage, and the knot is secured with two simple half hitches. People often think that knots are more complicated than they are; knowing which simple knot to use for a given task is a useful skill.
Dec
5
comment Adding a new dimmer switch to old wiring?
Whoever wired the switch originally was lazy and neglected to put black paint or tape on that white wire; the reason to do this is precisely to ensure that future homeowners don't have to ask your question! You might fix that person's mistake and color the wire appropriately.
Apr
3
comment Voltage fluctuations and GFCI tripping drivng me crazy
@ThreePhaseEel: Good point; I was neglecting the fact that the neutral wire is a very low-resistance resistor.
Apr
3
comment Voltage fluctuations and GFCI tripping drivng me crazy
@SomeGuy: Then I am confused, because it seems that we agree that a volt meter will show no voltage on the neutral wire. Yet you claim there is such a voltage, because there is a current. Can you describe an experiment that would measure the AC voltage that you claim is on the neutral wire?
Apr
2
revised Voltage fluctuations and GFCI tripping drivng me crazy
added 446 characters in body
Apr
2
comment Voltage fluctuations and GFCI tripping drivng me crazy
@SomeGuy: My prediction is that current will be nonzero -- about half an amp, AC -- on on both the hot and neutral sides, and voltage will be 120VAC on the hot side and 0VAC on the neutral side. And therefore there is current on the neutral without any voltage. Do you agree or disagree with this prediction? If you disagree, what is your prediction? When you post your prediction, I will attempt the experiment and we will see who is right.
Apr
2
comment Voltage fluctuations and GFCI tripping drivng me crazy
@SomeGuy: Well, clearly we disagree, but we can settle it with science. Run a black wire from a 120VAC breaker to a current meter, then to a 60W light bulb. Then run a white wire from the bulb to a second current meter and then from the current meter to the neutral bus. (Current meters must be installed in series.) Measure the current on the hot and neutral sides. Now remove the current meters and run wires from the white and black wire connections on the bulb to two volt meters, and then attach both volt meters to the safety ground.
Mar
13
comment Attach net/hammock to interior walls
The true tension force you need to overcome is therefore somewhere between 400 pounds at a minimum, and infinity at a maximum, depending on the angle at which you want the hammock to make when loaded. What is that angle? a 400 pound load with an angle of five degrees supplies the equivalent of 5000 pounds of force to the wall, so it matters a lot. Do a web search for "sling angle factor" for charts showing the amount of extra force supplied as a factor of angle.
Mar
13
comment Attach net/hammock to interior walls
Something to keep in mind is that the angle at which the hammock lies when under load dramatically changes the tension force which is applied by the hammock to the walls. Imagine for example you wanted no deflection whatsoever from a horizontal line when the hammock is loaded. Obviously the hammock would have to be infinitely tensioned for that to happen. Now imagine you suspended the hammock from the ceiling straight down, so the angle was purely vertical; clearly the tension with a 400 pound weight is 400 pounds of tension.
Mar
13
comment Is Duck/Duct tape safe to use to insulate mains wires?
Can you more clearly describe the circumstances under which you have non insulated mains wires?
Mar
13
comment water backing up into both sinks, whether running the disposal or dishwasher
You've described a scenario, but you forgot to ask a question. What's your question? "I need help" isn't a question; what specifically do you want to know?
Dec
22
awarded  Peer Pressure
Oct
27
awarded  Yearling
Oct
22
comment Is there a way to change this circuit so that the receptacles are not controlled by switches?
@MarkTraina: That I don't know. I've never seen that behaviour in a multimeter.
Oct
22
comment How do I fix a broken brass drawer pull?
Then I'd go for brazing on new metal as the answer suggests.
Oct
22
comment How do I stop a dimmer switch from humming?
What brand is the dimmer you bought?
Oct
22
suggested rejected edit on Can I branch off of a 2 pole 30 amp 10-3 wire found abandoned in a junction box?
Oct
22
comment Is there a way to change this circuit so that the receptacles are not controlled by switches?
@MarkTraina: Also, as I always counsel people who are getting into homeowner wiring: if you do not have a solid grasp on what the relationships are between volts, amps and watts, if you can't off the top of your head immediately say that a 60W bulb will draw 0.5A on a 120V circuit, then learn that before you go on. You wouldn't want a contractor to work on your house who was not clear on the difference between pounds, inches and minutes, so don't be a guy working on electrics who confuses current, potential and power.