Tired of noisy signals and cables that break too soon?
You have a big job to do. Maybe you are setting up a new audio system in a church or a conference hall. Maybe you are building a control panel for a factory machine. You need a cable that works right the first time. You do not want to deal with static noise in your audio. You do not want wires that crack when you bend them. And you definitely do not want to fail a safety inspection because of bad materials.We know the pain. You buy cheap cable to save money. But then you spend hours fixing ground loops or replacing wires that corroded in the wall. It costs you more in labor than you saved on the wire. You need a cable that is tough, quiet, and easy to install. You need the Belden 8777. This is not just a wire. It is a solution for messy signals and hard environments.
What exactly is the Belden 8777?
This is a multi-conductor cable made by Belden. It is part of their “Classics” series. It comes in a big spool of 305 meters (which is about 1000 feet). This gives you enough length for almost any project without needing to splice wires together.The cable has 6 cores. Inside, these are arranged as 3 pairs. Each pair is twisted together. This twisting is very important. It helps cancel out noise from other wires nearby. The wire gauge is 22 AWG. This is the “Goldilocks” size. It is thick enough to carry a signal clearly over distance, but thin enough to stay flexible.The jacket is PVC. It is gray or chrome in color. It is tough against oil and chemicals. It also resists fire. The inside insulation is polypropylene (PP). This plastic handles heat well and keeps the signal strong.
Let’s look inside the wire
You need to know what you are buying. Let’s break down the build of this cable. We use simple terms so you know exactly what you get.
The Conductor (The Copper)
The core of the wire is copper. But it is not just solid metal. It is stranded. The spec is 7/30. This means there are 7 tiny strands of 30 AWG wire twisted together to make one 22 AWG conductor.Why stranded? Because solid wire breaks if you vibrate it or bend it often. Stranded wire flexes. It moves with the machine or the building. It lasts longer.The copper is tinned. This means it has a thin coat of tin on it. Tin stops the copper from turning green (oxidizing). If copper oxidizes, the signal gets weak. Tin keeps the connection strong for years, even in damp places.
The Insulation (The Coat)
Each copper wire has a coat of Polypropylene (PP). We use PP because it does not absorb water. It also handles heat well. The insulation thickness is 0.011 inches. This keeps the wires from touching each other and causing a short circuit.
The Shield (The Noise Blocker)
This is the best part. Each pair of wires has its own shield. It is called “Beldfoil.” It is aluminum foil wrapped around the pair. It covers 100% of the wire.Think of it like a raincoat for your signal. It stops outside noise (EMI/RFI) from getting in. It also stops your signal from leaking out and messing up other wires.There is also a drain wire. It is a bare copper wire running along the shield. It makes grounding the cable very easy. You just connect this one wire to the ground, and the whole shield works.
The Jacket (The Armor)
The outside layer is PVC (Polyvinyl Chloride). It is 0.034 inches thick. This is the tough skin. It protects the delicate insides from scratches, crushing, and chemicals.The jacket is rated for “CM” (Communications) and “FT1” (Flame Test). This means it is safe to run inside walls (plenum spaces) in buildings. It does not spread fire easily.
Technical Specs at a Glance
If you are an engineer, you want the numbers. Here they are, straight from the data sheet:
- Part Number: 8777 (or 8777 060100 for 100ft, but we sell the 305m spool)
- Conductor: 22 AWG, 7 strands, Tinned Copper
- Pairs: 3 Pairs (6 Conductors total)
- Insulation: Polypropylene (PP)
- Shield: Foil (100% coverage) + Drain Wire
- Jacket: PVC (Gray or Chrome)
- Outside Diameter: 0.273 inches (6.93 mm)
- Voltage: 300 Volts Max
- Current: 2 Amps per conductor
- Temperature: -20°C to 80°C (-4°F to 176°F)
- Capacitance: 30 pF/ft (very low, good for high speed)
- Resistance: 15 Ohms per 1000 ft
- Standards: UL 1685, IEC 60332-1-2, RoHS, REACH, CE
Where can you use this cable?
This cable is a workhorse. You see it in three main places.
Audio and Video Systems
This is a favorite for audio engineers. It is great for connecting microphones (XLR), speakers, and mixing boards. The twisted pairs keep the “hum” out of the audio. If you are wiring a stadium, a theater, or a recording studio, this cable keeps the sound clean. It is also used for video signals like SDI or composite video in some setups.
Industrial Control and Instrumentation
Factories use this cable to connect sensors to PLCs (Programmable Logic Controllers). For example, a temperature sensor on a motor needs to send a tiny voltage signal back to the computer. If there is a big motor next to it, that motor creates magnetic noise. The Belden 8777 shield stops the noise. The signal gets through clearly.It is also used for control lines. If you have a robotic arm, this cable carries the commands to move the arm. It needs to be flexible because the arm moves. The stranded wire handles this perfectly.
Data and Networking (Light Duty)
While this is not a heavy-duty Ethernet cable (like Cat6), it can handle data. It is good for older protocols like RS-485 or RS-232. These are used in building automation (HVAC control, lighting dimmers). It can also handle PoE (Power over Ethernet) for low-power devices like IP cameras or access points, as long as you stay within the voltage and current limits.
Why buy the 305-meter spool?
You might see smaller spools of 100 feet. But buying the 305-meter (1000 ft) spool is smarter for business.First, it saves money. The price per foot is much lower when you buy the big roll. You need to calculate your project cost accurately. Having a full spool means you do not run out in the middle of a job. Running out stops work. That costs money.Second, it reduces waste. If you buy small spools, you have many plastic ends to throw away. One big spool has less packaging waste.Third, it is easier to pull. When you pull wire through a long conduit (a pipe inside the wall), you do not want a connection point in the middle. Connection points get stuck. A continuous 305-meter run goes smoothly from start to finish.
Is it safe and legal?
Yes. This is a major concern for importers and contractors.It is RoHS compliant. This means it does not have lead or other bad chemicals. Europe and California require this. If you sell equipment with this cable, you pass the environmental tests.It is UL Listed. Underwriters Laboratories tested it. They checked the fire safety and the electrical limits. The “CM” rating means you can use it in air-handling spaces (above drop ceilings). The “FT1” rating means it is flame retardant.It meets CE standards. You can sell products using this cable in the European Union without legal trouble.
How does it handle the real world?
Cables live in tough places. They get pinched in doors. They get pulled too tight. They sit in hot attics.The Belden 8777 is built for this. The PVC jacket resists abrasion. If you drag it over a sharp metal edge, it is less likely to cut open than cheaper cables. The temperature range is wide. It works in a frozen warehouse (-20°C) and a hot factory floor (80°C).The “Chrome” PVC jacket looks professional. It does not look like a cheap black wire. It shows you care about quality.
Don’t settle for “good enough”
In the cable business, “good enough” usually fails later. You want “built to last.” The Belden 8777 has been around for a long time. It is a “Classic” for a reason. Engineers trust it. Contractors keep it in stock.If you are building a product that you want to sell for a high price, you need high-quality parts inside. Using Belden 8777 tells your customer: “I did not cut corners.”It solves the headache of callbacks. Nobody likes going back to a site to fix a wire that stopped working. This cable prevents that.
Get your quote now
We have this cable in stock. We can ship it to you. We know you need to check the price and the lead time. The market changes fast. Copper prices go up and down.Do not wait until your project starts. Get the price today. We offer competitive rates for the 305-meter spool. We can also cut it to length if you need specific sizes, but the full spool is the best value.Click the button or send us an email. Tell us how many spools you need. We will send you a formal quote within 24 hours. Let’s get your project wired up correctly the first time.Request a Quote Now.