At 24 inches you can bury underground feeder cable, using PVC conduit to 18 in. below ground only where the wire comes up. deep, use galvanized metal rigid electrical conduit (1/2-in. -diameter is large enough for the water feature) and run individual conductors inside..
Herein, can PVC conduit be used above ground?
PVC conduit provides protection for electrical work that is buried underground. Among all conduit types, PVC is lightweight and versatile. Available in a variety of thicknesses or grades, PVC is well suited for direct burial or above ground work. PVC conduit is also used for many electrical requirements.
Subsequently, question is, how deep does PVC conduit have to be buried? 18-inches
Also question is, do you need a ground wire in PVC conduit?
PVC is not conductive and it's not and cannot be used for grounding. Metallic conduits are grounded due to the need to ground all metallic parts of the electrical system or appliance where applicable. Most times there will also be an Earth wire in the metallic conduit.
Does sub panel wire need to be in conduit?
Re: Subpanel wire run Individual THHN conductors must be run in conduit--either metallic or non-metallic, flexible or rigid. You could probably use SER instead, as long as it's sheathed and contains four conductors: one for Leg A, Leg B, neutral, and ground.
Related Question Answers
What kind of wire do you use for outdoor conduit?
Type UF cable is the most commonly used nonmetallic cable for residential outdoor wiring runs. UF cable can be direct-buried (without conduit) with a minimum of 24 inches of earth cover.Can direct burial wire be put in conduit?
While direct-burial cable can be run inside conduit for additional protection, the cable is designed to withstand direct exposure to the soil and moisture and is rated for wet, dry, and damp environments.Can you bury wire without conduit?
However, if you only need a power supply (without wires to control lights from inside the house,) you can use a direct burial cable, placed in the soil without conduit. The NEC (National Electrical Code) requires that UF cable be placed in a trench at least 24 inches deep.Can I bury an extension cord outside?
Never use an extension cord as a substitute for proper electrical wiring. Never bury a live extension cord behind a wall. Additionally, never bury an extension cord in the ground. The elements will eventually eat through the insulation, corrode the wire, and may cause a fire.How deep are underground power lines buried?
Occasionally, instead of being buried directly in the ground, an underground cable is placed in a tunnel, which can be 20 or 30 metres below ground.Can I use THWN in underground conduit?
Burial depth varies based on location and type of conduit. and NO you cannot use THHN in underground conduit. While most THHN is also dual rated as THWN, not all of it is. You must have that W in there for it to be rated for wet conditions, which underground conduit is.What type of wire is used for PVC conduit?
THHN (thermoplastic high heat-resistant nylon-coated) is the best wire for pulling through PVC conduit. Other types of wire have a sticky rubber sheathing that makes them almost impossible to pull.Is it legal to run Romex in conduit?
Romex is allowed in conduit, length is not an issue. Romex is not allowed in wet locations. The inside of conduit in a wet location is considered a wet location.Is EMT conduit suitable for outdoor use?
Examples are electrical metallic tubing (EMT), which is lightweight and easy to install; intermediate metallic conduit (IMC), which has a thicker, galvanized wall, making it suitable for outdoor applications; and galvanized rigid conduit (GRC), which is thickest and offers the most protection.Does EMT conduit rust?
Typical EMT Type conduit will resist rust for a few years. It is however inevitable that it will rust. On the other hand there have been times when the conduit has rusted on parts of its surface having been exposed to the outdoor elements for one or two seasons.Can you use PVC for electrical conduit?
PVC pipe can be used in place of PVC conduit if the PVC pipe has been manufactured to meet safety requirements on flame and temperature resistance, but because PVC conduit isn't pressure tested, PVC conduit cannot replace PVC pipe. So, the answer is YES. A PVC pipe can be used for electrical conduit.Can I use white PVC for electrical conduit?
Since, in the listings, white plumbing PVC is NOT listed as an electrical raceway, it is not suitable for use as one.Does grounding wire need to be insulated?
A grounded wire is required by the National Electrical Code to be white or gray in color on the customer side of the meter. Grounded wires on the utility side of the system do not generally have insulation. A "grounding" wire on the other hand is a safety wire that has intentionally been connected to earth.How do I run electricity from my house to my shed?
Run 14-2 NM wires throughout the shed and tie them through electrical wire boxes. Attach any desired fixtures in the shed or on outside and run wire as needed. Tie in 14-2 NM wires from fixtures and receptacles into sub panel breakers as needed. Turn off the electricity inside the home at the main breaker panel.What size wire do I need to run to my shed?
You probably want to run a 30 amp (or 50 is better) wire to your shed, and then run smaller breakers in a box of 120 from there to your lights & outlets. It will be _so_ much better to have the air conditioner on 1/2 of the 220, and the other power tools on the other 1/2 of the 220.Can electrical wire run next to gas line?
No one is allowing an energized wire to be in contact with a gas line - that is why the wiring has insulation around the conductors and is either in a sheath (such as NM cable) or in a raceway (single wiring such as TW, THW, THHN/THWN, etc.).Can you bury water and electric together?
The National Electrical Code does not specify whether power and water can or cannot be run in the same trench. you will need to bury the water at least 18" and any thing else in the same ditch needs to one foot to the side and one foot above. 
Daniel Foster 
