Questions tagged [underground]

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1answer
702 views

Underground electrical to garage - burying depth?

How deep does schedule 40 PVC conduit need to be buried for 30 amp electrical service from house to garage?
4
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1answer
8k views

Seeking good method to locate short on buried AC power cable

We have experienced a failure or short in one leg of a buried 3 wire 2.0-gauge aluminum cable that runs 150’ from our house to a detached garage (2 hots and a neutral, no ground -USE-2 RHH 60 MIL XLP)....
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2answers
535 views

Reduce speed of existing well pump

My existing well pump (at 550 ft deep) is a nearly brand new (installed last July) 3 wire pump and I do not want to replace it. However, I now have a 1500 gallon underground cistern in which to store ...
2
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1answer
1k views

Can I route a drain pipe under a gas line?

I want to reroute an outdoor drain pipe (rain water) to a better location but there is a gas line that is in the path that the drain pipe needs to go. Can I route the pipe below the gas line? I'm open ...
2
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1answer
337 views

running heat ducts outdoors

I'm building a small (160 square feet) granny flat about 20' away from our main house. Our main house has a great blend of pellet stove + solar collection to keep the home warm. Rather than run ...
3
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2answers
3k views

GFCI breaker with GFCI outlets trip with no load

This is my first time posting here. I hope someone can give me some help. The issue I have is new construction wiring for a driveway light and outdoor outlets at the head of the driveway. The ...
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2answers
2k views

What kind of pipe nipple to use on my well pitless adapter

I am working on the water pipe that connects to the pitless adapter on my well casing. There is a 1 in black pipe nipple that is screwed into the brass female thread of the pitless adapter. I have a ...
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1answer
303 views

How can I run a line under a cement sidewalk

What's a good way run a length of 2" PVC underground from one side of the porch to the other. I'd use it as a culvert to route a garden hose in the long term. The cement step and walk are 4' wide. ...
1
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1answer
219 views

How serious is building subsidence

I own a flat in the UK, in which I live. I own it. It's part of a block of 50 flats. I have learned recently that there was a subsidence problem. A large tree has been drinking the water from under ...
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0answers
304 views

Nicked and exposed UF cable exits house underground

While digging a hole to plant a bush, I hit the cable supplying power to our lamp post. Due to erosion over the past 40 years, the cable was barely covered with earth, and is now partially exposed in ...
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1answer
890 views

Running multiple UF wires in a single trench

I'm taking power from a 100 amp subpanel in an outbuilding and running three branch circuits: two to small outbuildings for lights, one to a horse waterer that draws 1.5 amps. Two questions: can I run ...
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2answers
660 views

Help identify (abandoned?) buried line

I have a pipe of some kind buried about 6" below grade in my backyard. Photos are provided below. I have no idea what this line might be, and was hoping to solicit ideas. Whatever it is, it appears to ...
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1answer
2k views

What's the best way to track buried electrical wire that's not live?

We bought a house that has light posts in the yard, scattered across 100 feet or so. I know there is buried wiring (probably no more than 12" deep) that supplies these lights, but this is a crazy old ...
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1answer
37 views

Drainage Pipe Question

I need to divert water from a rain gutter. The problem is that I need to run the pipe under a side driveway. What is the best pipe that will hold up with vehicle traffic? How deep does the ditch need ...
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2answers
2k views

DIY trenchless technology -- what options would be suitable?

I have seen, on occasion, folks on this site whose situation would call for the use of some flavor of trenchless technology -- this guy is the most obvious example, but others have come up. However, ...
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0answers
214 views

Is it Okay to Snake Underground Line that has a Shielded Fernco Coupling?

I need to tie-in a pvc pipe to an existing 4 in. pvc drain pipe. I plan to use a shielded fernco coupling. Is it okay to snake a pipe that has a fernco coupling? Will the snake tear up the fernco? The ...
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1answer
463 views

Requirements for adding outdoor outlets

I would like to run a line of outlets on the front side of my house. Ideally there will be: 1 circuit of outlets that are always on for general use 2 circuits of outlets that are on timers, one for ...
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3answers
3k views

Can I build an electrical pole structure to hold a power wire into my property?

The power pole to my house is at the back right corner of the property. However, it's a little outside my property line. I wanted to run a power line straight down along the pole and into the ground ...
6
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2answers
51k views

Buying a House On Underground Spring. What to do?

My fiancé and I are under contract on a new home which we are concerned it might be built on an underground spring. There are two sump pumps in the house, on opposite corners of the house. Both times ...
3
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2answers
9k views

What are the code requirements for crossing a buried LPG line with an electric line?

Trenching for 1" Non-Metallic Liquidtight Conduit Type LFNC-B with 18" cover (10-3 W/G UF wire installed, 240V with 30A breaker) to serve a well. Just bumped into LPG line crossing conduit's path at ...
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2answers
247 views

garden network and power cables

I'm trying to bury cables for my garden. The requirements are to have 12v power for a water pump 30-40 watt (2.5 amp), network connectivity for sensors and a webcam. I want 4 stations at opposite ...
3
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2answers
2k views

How often do sewer lines collapse?

I have the opportunity to add some coverage to my insurance that would cover a sewer line collapse (amongst other issues with underground services). Is there any rule of thumb as to how long they ...
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1answer
2k views

In the UK, what type of flexible conduit should I use for electrics in shed that run underground and emerge through the concrete base?

In the UK, what type of flexible conduit should I use for electrics in shed that run underground and emerge through the concrete base? I see various standards quoted such as IP66. Would this be ...
2
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1answer
499 views

How to prevent an exterior automatic watering system from freezing

I'm looking for solutions on preventing automatic watering systems for horses from freezing. The faucet is 150-200 feet away from where I'm building my horse's pasture. I live in New Jersey so I'm ...
4
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1answer
2k views

Conduit Underground - Ways for tunneling under obstructions?

I'm running into a situation where it's increasingly difficult to bury this PVC underground 18" in some spots due to massive tree roots. Changing directions and/or destroying the roots isn't an option....
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1answer
76k views

What size wire do I need for a 100amp underground 300 ft run?

I want to put in a 100amp subpanel in my garage. The run will be underground and 300ft long. I have a Siemens panel with breakers rated at 60/75 deg C. What is the proper wire size I need? I was ...
6
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3answers
978 views

What's the easiest way to cut a chunk out of a buried railroad tie?

I'm in the process of digging holes for concrete piers (for a small deck - nothing fancy) and on my last hole I came across what appears to be an underground railroad tie (or some other huge piece of ...
3
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2answers
4k views

What is the best way to run underground electrical and low voltage in the same trench?

I'm putting in a couple of new electrical lines for my back yard. I have a trench dug from point A, to B, to C, etc.. I then had a bright idea. Why don't I put speaker wires and CAT6 under ground ...
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3answers
10k views

What is the maximum depth below grade for termite activity?

I'm endlessly revising my perimeter footing insulation project and need to know: how far below grade do subterranean termites tunnel? These would be normal subterraneans, not formosans. For some ...
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1answer
6k views

Where could the water be coming from found in this hole my dogs dug?

My puppies have been digging in our yard mainly one specific area for awhile. The other day I noticed my puppy's feet were wet. I went to the hole and found water had filled in. It is only about a 1 ...
6
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1answer
22k views

Can I run a 50 amp circuit underground?

I need to run a 50 amp circuit (120/240V) from a shed to a travel trailer that is permanently in place. The previous trailer had 30 amp 120V service running underground to a mounted/covered outlet ...
4
votes
1answer
375 views

How can I run plumbing from house to a nearby new office 1.5m away?

I am building a new office next to the house; it is about 1.5m away. I need to run, from the house's upstairs bathroom, 1 hot, 1 cold, and radiator with return (all of which I believe are 28mm to ...

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