Any electricians here?

[Maynard]

I've got a question about some home wiring? Hoping there are some electrical know its on here

[burhead1]

I have my moments LOL, no really I may be able to help. what you trying to do?

[Maynard]

I am trying to hardwire into an existing outlet. Im going to remove the outlet, and hardwire the new wire, into the feed that used to power the outlet. My question is, since the existing feed is inside the wall, and my new line is coming from the room side, do I need to somehow secure it at the wall or can it just be left freely in the hole where the outlet box was? If that makes any sense at all.........

[burhead1]

going into weed production? LOL joke. You will need to make your connection in a box, you can't just pull the wire out of the wall and join with marrets. All connections need to be made in or through a box.

Only pics i could find
use the connector



and well this pic is all i could find, but you can get that face plate in a rectangle.

[Maynard]

Ok that makes sense! Thanks a lot! Off to home depot....

[Expat]

Or like this:

[BTD]

Keep in mind that all junction box's must be accessible. You can't drywall over where the box is with the wires connected together in there. You would need some sort of flat plastic outlet plate.

Also be sure what you are wiring in does not overload a circuit. There is a maximum watts allowed for each circuit in a residential house. And Usually no more than 12 loads to one circuit I think.

And twist the wires together before putting the marrets on.

[Beefitarian]

I can't think of a reason you wouldn't buy one of these instead of taking out an electrical permit to mess with the building's wiring.

http://www.grainger.com/Grainger/HUBBEL ... vc=IDPRRZ1

[200hr Wonder]

Maynard I am going to take a wild guess here and what you want to do is move the outlet that is down low at the standard height from the ground up to behind a wall mounted flat panel TV? If that is the case it should be strait forward to pull the old out let out, put marettes on and run your nomex up the wall to the new position, cut a hole in the drywall and rework device box so it can be put in place with the drywall still in.

I was going to do this in my parents place but the first problem I ran into and is quite common is that there was too many wires in the box. I could not add another wire. However I was trying to maintain the receptacle.

The nomex must also be clipped 12" from the box for both. So the new box you can reach in and with a little patience pound in a wire clip. The old one you are cutting and patching drywall.

Other things to consider is age of the house, if it is aluminum wire, just let sleeping dogs lay and do not touch it. It is not unsafe as is but as soon as you start flexing 35+ year old wire around troubles will abound.

Also total number of devices must be looked into. IIRC it is 8 devices per circuit.

Check to see if you need a permit, you may.

The old outlet must still be accessible so a cover plate.

[burhead1]

Not to take this thread in the wrong direction but anyone here explain why we need 110 and 220 circuits running throughout our homes?
I mean 95% of the things we plug in have a transformer attached to drop it down to say oh 5-12v DC. the home of the future should be wired for DC not AC well with a exception for a dried, stove fridge and outlet in the bathroom for the hair curler.

[iflyforpie]

We don't have houses wired for DC because the requirements for DC vary so much and dedicated external power packs are cheap and compact. AC power has the advantage of being able to be easily stepped down and rectified to any DC voltage with minimal losses.

[burhead1]

I understand that, but there is a loss when it is transformed to dc that loss is usually in the form of heat. I see a 42v DC home in the future? NO? Ok was just throwing it out there

[Beefitarian]

Partially because your wattage is a combination of volts and amps to over simplify the concept.

Your oven uses 240volts because it is a high wattage device. That way it uses a lower amperage and smaller wires compared to what it would need at a lower voltage.

Your starter on your car is another high wattage device. Since it is only 12volts it requires large cables to deliver the higher amperage.

The reasons they use alternating current are it is easier to switch under load because it is switching on and off 60 times per second to reverse directions so it does not arc as much and it can be changed from the high voltages on the feeds outside with a simple coil transformer. Then changed again to 12volts with the small coils you're plugging in. There is not much loss converting it to DC because it is done with a rectifier at the lower voltage.

[iflyforpie]

I don't believe the losses are as high as going from DC to AC, especially if you've got one of those oversized vacuum cleaners masquerading as inverters on some aircraft (c'mon, this is the 21st century!!). I think the efficiency of a rotary inverter is like 20%.

DC power adapter rant!!

http://www.youtube.com/watch?v=VvR_3OTxs8A#t=2m52s

[rigpiggy]

the last airframe I flew with rotary inverters was "DART" powered. Not too many left