Well Pump Wiring Code Question

Getting ready to replace my well jet pump with a 240 volt model (currently I use a 120 volt pump. Currently I have a 20 amp, 120 volt circuit that runs from the house to the pump house about 60 feet. I use that circuit for the pump, a light and a receptacle. I want to replace that circuit with a 20 amp MWBC using 12/3 UF cable from the sub panel in my detached barn to the pump house (about 20 feet).



Question: Can I use 1/2" seal-tite to run from the sub panel to a a junction box prior to going underground with the 12/3 UF? The seal-tight run would be about 30". (I have a bunch of seal-tite, connectors and #12 THWN that I bought cheap at a storage unit auction.) The seal-tite would be run in the stud bay and along side the ceiling joist to get from one side of the barn to the other.



Question: Can I use an unfused air conditioning disconnect at the pump house to disconnect the 2 ungrounded conductors of the MWBC.



I can find nothing in the NEC that would bar either of these items, but I am a code novice.
      


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Similar Topics From Forums

I live in the bottom unit of a 6 unit bldg. We have the filters and everything in a room off of our unit. We also have a breaker on our panel for the pump. I haven't tested it yet by shutting off the breaker (mainly due to long hours at work lately and nobody is awake when I am home), but is it possible/probable that the pump for the whole bldg is running off of our meter? There are 6 total units and 6 total meters outside, so there is no obvious meter for the pump circuit (plus the breaker is on OUR panel).
      
I'm trying to figure out how exactly this should be redone... right now there is a NM cable going from the panel though the rim joist and outside straight down into the ground and out about 2 ft into the sump well then it jus dangles there with a female plug end connected to that which the sump pump then plugs into... well this actually shorted out the other night and created a wonderful noise and sparks...



how should I redo this? right now its not even GFIC... just straight into a 20 amp breaker...



I was thinking put an outside receptical on the side of the house run that straight thorugh the back of it into the rim joist and to the panel... have the outlet on that a GFIC outlet then run a underground line from that to the pump using UF cable with a similar female plug end inside the well (the well is about 11 ft deep and the plug is about 1 ft from the top right now... then that would just plug into the GFIC outlet on the side of the house... that outlet would of course have one of those clear enclosures around it that is water tight...



suggestions? comments? code violations?
      
OK, I'm an electrical dummy ...



I have finished basement w/a bathroom. We have an ejector pump off the bathroom that has been plugged into an outlet w/gfi since I've owned the house (10 years). There is also a booster fan for my electric dryer plugged into the outlet (has been the same for 10 years).  The only thing that has ever tripped up that outlet is using a hair buzzer in another outlet within the bathroom (but once you hit the reset its fine).

   

  This morning I realize the ejector pump was not sucking down the water from the drains. I looked at the outlet and realized it needed to be reset. When I reset it, the pump would run for a few seconds and the outlet would trip up again. Tried this a few times. Thought maybe it was an issue w/the outlet altogether. Neighbor suggested maybe it was an issue with the pump. Went thru various scenarios and bottom line is when I plug the pump into other outlets it works totally fine and once I do that and reset the outlet it was on, the booster fan works fine and the outlet does not trip. So, basically this outlet is tripping when the pump is on it but the pump is not tripping other outlets and the outlet works fine as long as the pump is not on it.

   

  What could be causing this? Why would an outlet that housed the two things on it all of a sudden continue to trip when the pump is on it but the pump is fine on its own in another outlet and the outlet is fine on its own w/o the pump?
      
HI all,



I have a rain barrel system with a pump (110v) and I ran a 3way switch to my patio and one by the pump (in a shed).  My wife now wants the pump on a timer (to water the garden).



So...I could just add a timer to the switched outlet, but I want to be able to override the timer with the switch (at the patio or shed), without interfering with the pump timer operation.



I've drawn up a diagram showing my proposed setup.



Question: can I rig up the pump with two power cords and plug one into the timed outlet and one into the switched outlet and not burn down my shed in the process?




      
Hello,

We're installing a steam shower unit & need to run new electrical wiring.  We have a few questions & hope someone can help!



We have three power cords (water pump, heat pump, steam generator) & none of them currently have plugs.  The specs are as follows:  3000W steam generator 110v - 30 amp GFCI breaker, 12 v lighting, 1.2 hp water pump 110 v - 30 amp GFCI breaker, & a 1500W heat pump 110v 12.5 amps.  It says you can run the heat pump off the same circuit as the rest of the unit.



Ok, so.. we're wondering what the easiest & cheapest way of going about this is.  We want it to be SAFE first & foremost, but also want to keep expense at a minimum.



Thank you for any advice you have!




      
I am in the process of installing a submerisble pump into my well, but I have a few questions I'd like answered first.



The pump is a 1HP, 230V pump with 8.2amps and KW 0.75.  It is rated at 12/2 w/ ground. 



1) Is there any reason I shouldn't install a 230v wall mounted switch to turn this on/off if I want to kill the power.  For now a pump start will control it for my irrigation system, this would just be in addition if I ever wanted to shut things down and not have to rely on using the breaker, which I understand shouldn't be used as a switch.



2) What about installing this on a plug, so that I can plug it into a receptacle vs. hardwired.  (*I'll explain my reason later)



3) My understanding is 12gauge wire is rated for 20amp, but it looks like the owners manual calls for a 25amp fuse.  Should I use 20amp or 25amp?



*The reason I ask about the switch and the plug is because I plan on using some wiring that is already in place.  I already have 12/2 w/ground installed in the location of the pump start.  It is currently wired for 110v as it was placed there for a 3/4hp jet pump I planned on installing, but ended up going with a cased well instead, so I figure why not utilize the existing wire, but switch it to 220 instead of 110.  Basically, swap the 20amp 110v switch out for a similar rated 230v switch and replace the receptacle with a 230v receptacle and just plug this pump in. 



I question the use of the plug because I thought I had read somewhere it was ok to use one, but when unpacking the pump last night, I thought I read never to install it on a plug, so now I'm unsure.  Why would they not want it on a plug?  I guess it's not a big deal as I can always run wire into the j-box, but I hate using pigtails if I don't have to.



Thanks for any info on this...heading to the parts store in a while to grab the fuse and anything else I need.
      
I have a 1/3 horse sump pump. I've read it uses 1300-2900 starting watts (or I guess that means surge watts)



The generator I can get is for $140 and has 1400 peak watts and 1200 continuous. Now this will only be used to power the sump pump when power goes out.



Is it powerful enough? I have no way of testing it out prior to buying.



Its this brand, but a lower end model.



http://toronto.kijiji.ca/c-buy-and-s...AdIdZ357888894



the above model is sold out.



thoughts?
      
Greetings,



I am looking to wire a sub-panel in my barn to support a general workshop.  Loads would include standard woodworking tools (including 220V table saw), welding, air compressor, etc.



The house has 200AMP main breaker and minimal in-house loads.  Dryer is gas, Oven and cooktop are gas.  Water heater is off the oil furnace.  I think the biggest single load is the well-pump and/or fridge compressor.  We do have sporadic toaster oven, hairdryers etc.  Otherwise its just lights, ceiling fans, flat-panel tv, stereo...



We had 4" conduit installed to the barn, so there is plenty of room to pull a big cable.  The entire run from the house panel to the barn totals around 155' (probably less, but rounding up)



My questions a



Can I pull a 100AMP sub-panel from my main house panel as described?


Would 4/0,4/0,4/0,2/0 aluminum service entrance cable be a good choice for this run?  Could I do it with something lighter?


Could I put an additional sub-panel in the garage (about halfway to the barn) by interrupting the run?  The garage subpanel would have a 220V plug for possible welding and/or electric car charging.  Would this require a separate run?


Are there any other considerations I should be thinking about in planning this?




Thanks for any thoughts you can share on this! 



Cheers,



pete
      
We are in the process of redoing the area around our pool. As part of this we are adding a pool house and hot tub (separate from pool).



I have a couple Elecrtical Contractors coming out this weekend to price/put together a plan. Along with talking to several indivuals, I've been lurking around reading and trying to gather info but feel the need to have as much info available prior to getting these estimates and plans. Please excuse any incorrect verbage i might use and appreciate any corrections to my terminoligy



So this is what i have 



The pool house is approx 100 ft from the house.

It will have a few and outlets for blenders, minifridge, tv etc

the pool equipement consites of a pump, heater and a sand filter. The pump and current heater run off standard 110 lines (however if i upgrade this I dont know if the new one will require a 220 line



The pool light seems to run off a standard line as well



The hottub requires a 220 40amp line



There will be landscaping lighting as well as 2 more outlets for accesories



The original setup prior to last year had what looks like 6 or 8 guage (3 wire) directly buried about 6-8 inches under  ground. it was running what look to be two 20amp circuits from the main panel inside the house. This wire got split to two separate outlets near the pool. One went directly to the pool equipment and on directy to the pool light switch and some landscaping ighting.



With all the enhancements we are making i'm wondering what the best approach will be.



I assume a sub panel in the pool house that has one "main breaker" and has its own ground. Then one run to the pool equipment and one run to the hottub and a couple runs to the accesories i mentioned.



I have seen several replies on here where individuals talk about  "if they were doing the job this is how they would do it". Id be interested in some responses



What type of wire would be best to get it to the pool house

Does it run right from the main panel in the house?

Does direct burial make sense or shold i put it in conduit? I'm already digging a trench three feet deep for water and RG6 (which will be pushed thru conduit)



Any question i should make sure i ask the contractors?





Thanks in advance for any input
      
I'm in the final stages of a rough in.... three questions:



1) Do the feeds to the panel need to be in the panel but not connected or is it ok to just have them pulled over by the panel



2) I've got can lights in a drop ceiling - do I just staple the cable to the joist in the area the light will go and coil up the excess?



3) I have an outlet and a switch that I can't disconnect right now(sump pump and a stairway light) but these will be going on new circuits I pulled. Obviously I can't get the box ready, can I just pull the cable and have it there by the existing box? I thought about putting in a new box, but there really is no space for the outlet and we like where the switch is.



I'd call the inspector and ask his preference but it is a voicemail box that has been full for a week.



Thanks.