2 circuits sharing neutral
Dks35 Manning
11 years ago
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Ron Natalie
11 years agoRelated Discussions
2 Issues - tripping breaker, broken neutral
Comments (6)Sounds like an older installation that allowed a single GFCI receptacle to serve multiple bathrooms and even outdoor receptacle s all at that same time. At the time GFCI devices cost a lot more than they do know. A good up grade would be to use separate GFCI receptacles in each location, all fed from the line side (so they are not feeding each other). It should only take simple wire changes in each device box. Open heater elements are notorious for developing ground faults. The bare heating element is electrically hot and debris gradually creates enough of a carbon track from the element to ground to trip a GFCI. Just noticed this is a block heater. If it uses the typical heater rod there is likely a crack in the rod covering. Even a crack so small you cannot easily see it will allow enough liquid to enter and contact the actual heating wire in the rod. This post was edited by brickeyee on Wed, Jan 9, 13 at 13:39...See MoreVoltage with the breaker off. Should I be concerned?
Comments (3)Bet you are using a distal meter. The input impedance of digital meters is so high they can read voltage that is capacitively coupled to a conductor in proximity to a hot conductor. Plug a light into the receptacle and turn it on. The filament will provide a path for the coupled voltage to ground and you will now measure 9 volts. The effective source impedance for the coupled voltage is very high, but the multi mega-ohm input of a digital meter can read it....See MoreSharing Neutrals
Comments (3)No there are no rules, only things is anything that opens into the bedrooms (smoke alarms, outlets, lights) It is not a good idea to use multi-wire as the circuits require afci breakers and it is expensive/ hard to find double pole afcis. The only thing I've heard about lighting circuits is the fear of the neutral comming loose and sending high voltages up near 240 through the dimmers and lights. In a house with home automation or lutron maestros getting fried, that saving using the multi-wire is lost. I've used 12/3 to laundries in nice homes to have a second iron outlet. Also they do help tidy up kitchen feeds. You do not need double pole as long as the 2 circuits are not on the same outlet. However many suggest to use them for safety. I personally do not, if future people don't get the hint seeing a red wire in the box or volt ticking the box first, that is their problem. Yes they do need to be on seperate phases. I am a fan of this wire saving and cleaner way as most others on here are as well. I do have another post on here that is near the top of the list about my teacher that thinks multi-wire circuits are awful. Everyone disagrees....See MoreConvert 3-Way Circuit to 2-Way Circuit
Comments (4)I also have the same question, except my switch is wired slightly different and I also have an extra step. Could you please advise on the following: The 3-way switch that I'm removing has these wires: Black Screw: Black wire (from shared cable to other switch) Silver/Brass Screw above the black screw: White wire (from shared cable to other switch) Silver/Brass Screw across from black screw: Red wire (from shared cable to other switch) Ground The 3-way switch I'm keeping has these wires. This is where the power source comes in: Black Screw(Common): Black wire (from power source) Silver/Brass Screw above the black screw: White wire (from shared cable to other switch) Silver/Brass Screw across from black screw: Red wire (from shared cable from other switch) Ground **Note: The White wire from power source is twisted off in a group of other white wires from other switches in the gangbox. Additional task: I have a separate 2way light switch next to the 3way switch(mentioned above) in the gangbox. I would like to wire this 2way switch into the 3way switch (or maybe vice versa). I want all lights in the room from both switches(2way and 3way) to function off a single switch, so perhaps wiring the 3way switch into the 2way is easier once the unneeded 3way switch is dealt with appropriately? Thank you for your help! This post was edited by flyons on Sun, Mar 16, 14 at 14:18...See Morepetey_racer
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