What is Direct Burial Cable?
Direct burial cable is a special type of wire. You can put it in the ground without using pipes. It is built to be tough. It handles wet dirt and heavy pressure. Normal wires will break if you bury them. This cable is different. It has a strong jacket. This jacket protects the copper inside.
This product is great for outdoor power. It brings electricity to lights, sheds, and homes. It also works for underground signs. You do not need extra conduit pipes. This saves you time and money. The cable is safe for long-term use in soil. It resists water and chemicals.
How is the Cable Built?
The cable has many layers. Each layer has a job. Think of it like a sandwich. The center is the copper wire. Copper carries the power. It is usually bare or colored plastic is around it.
Around the copper is the insulation. This plastic stops the electricity from leaking. It keeps the power inside the wire. Then comes the armor. This is the strong part. It is often metal tape or wires. It stops rocks from cutting the wire. It also stops animals from chewing through it.
The outside layer is the jacket. This is black plastic. It is usually made of PE or PVC. This skin is waterproof. It also protects against UV light from the sun if part of the cable is above ground. Some cables have a red strip. This helps you find them later.
Key Technical Specifications
Here are the hard numbers for our cable. We follow US standards (UL) and international standards (IEC).
Conductor Details
The core is made of annealed copper. It is soft and flexible.
- Material: 99.9% Pure Copper.
- Gauge (AWG): From 14 AWG to 500 MCM.
- Stranding: Class B or Class C stranding. This means it is not one solid stick. It is many small wires twisted together. This makes it easy to pull.
Insulation and Voltage
- Voltage Rating: 600 Volts. Some types go up to 5kV or 15kV.
- Insulation Material: XLPE (Cross-linked Polyethylene) or PVC. XLPE is better for heat.
- Temperature: It works from -40°C to 90°C. The wire can get hot and not melt.
Armor and Jacket
- Armor Type: Aluminum Interlocked Armor (AIA) or Steel Tape Armor (STA).
- Jacket Material: High-Density Polyethylene (HDPE).
- Color: Black is standard. Stripes are available for identification.
- Crush Resistance: 1000 lbs per foot (approx). It handles heavy dirt pressure.
Where to Use This Cable?
You can use this cable in many places. It is safe for wet locations. It is also good for dry locations. Here are common uses:
Residential Power
Homeowners use it for backyards. It powers garden lights and pool pumps. It brings power to a detached garage. You can bury it 18 to 24 inches deep. It feeds sub-panels far from the main house.
Commercial and Industrial
Factories use it for outdoor lighting. It powers security cameras. It works for parking lot lights. It is great for signage on highways. The armor stops lawnmowers from hitting it.
Agricultural Use
Farms need strong wire. It powers water pumps in fields. It handles irrigation systems. Cows and horses might step on it. The armor stops damage. It also resists fertilizer chemicals in the soil.
Installation Tips for Beginners
You do not need to be a pro to install this. But you must follow rules. First, check local codes. In the US, you need UL listing. NEC Article 340 covers UF-B cable.
Digging the Trench
Dig a deep hole. The depth depends on the wire size and local law. Usually, it is 24 inches deep for 120V circuits. If you use GFCI protection, you can go shallower (12-18 inches). Put sand at the bottom. This cushions the wire.
Laying the Wire
Do not pull the wire too hard. It stretches. Use a pulling lubricant. This soap helps the wire slide. Do not bend the wire too sharp. Keep the bend radius big. If you kink it, the inside breaks.
Backfilling
Cover the wire with sand first. Put 6 inches of sand on top. Then put warning tape. The tape says “Caution: Electric Line.” Finally, fill the dirt back in. Pack it down tight.
UF-B vs. Armored Cable (Teck90)
People often confuse these two. UF-B is common in houses. It looks flat. It is for wet ground. It is cheap. But it has no metal armor. You must protect it with conduit if it sticks out of the ground above a certain height.
Armored cable (like Teck90 or MC-HL) is stronger. It has a metal core. You can use it in places where UF-B is not allowed. You can put it in walls and ceilings inside a building, and then bury it outside. It costs more. But it is safer against physical damage.
Why Buy From Us?
We make cables for export. We know US and EU standards. Our products have UL and CE marks. You do not need to worry about quality. We test every batch.
We use pure copper. Cheap cables use aluminum. Aluminum heats up and breaks. Our XLPE insulation lasts 30 years. Our HDPE jacket does not crack in cold weather.
We offer custom sizes. Need a specific color strip? We do it. Need a specific length on the drum? We cut it. We ship fast. We pack drums on pallets. They arrive without damage.
Frequently Asked Questions
Can I use direct burial cable in conduit?
Yes, you can. It works fine in pipes. But it is bigger than THHN wire. It might be hard to pull in small pipes. It is usually a waste of money to put it in pipe unless the code requires it.
How deep do I bury it?
Check your local electric code. Generally, for 120V or 240V circuits, dig 24 inches deep. If you have GFCI protection and the cable is listed for it, 18 inches is okay. Never go less than 12 inches.
Is it waterproof?
Yes. The jacket is solid plastic. Water can not get in. The ends are sealed during making. But when you cut it, you must seal the end with tape or glue to keep water out.
Can I use this for 480V?
Standard UF-B is for 600V. So yes, it works for 480V 3-phase. But you need the right size wire. The voltage is fine, but the distance matters. You need a thicker wire for long runs at 480V.
What is the difference between USE-2 and UF-B?
USE-2 is old style. It is sunlight resistant. But it is not approved for inside buildings. UF-B is newer. You can use it underground AND inside a building (in walls or floors). UF-B is more versatile.