Quick Answer / Summary: Bulk snake wire: 2-32 twisted pairs, 20-24 AWG, overall foil or braid shield, PVC or PUR jacket, sold per metre or per drum (100 m). For a build: choose pair count with two spares, gauge by run length (22 AWG to 30 m, 20 AWG beyond), shield by environment (foil indoors, braid for flex), and jacket by handling. Termination needs a soldering iron or punchdown tool plus connectors – the labour is the real cost.
Bulk multipair wire is the raw material of every snake: N twisted pairs, a shield, a jacket, sold by the metre. Buying it well is a construction decision, not a shopping one. This guide covers the wire itself and the arithmetic of building with it.
Reading the Wire Spec
Pair count and gauge: 22 AWG is the mic-snake standard; 24 AWG saves weight and diameter on short runs; 20 AWG extends the length budget. Shield: overall aluminium foil with a drain wire covers 100% electrostatically and is light; braid resists flex and RF; foil-plus-braid is the touring compromise. Jacket: PVC indoors, PUR for flex and cold. Also read the pair identification – colour-coded pairs with a numbered binder make termination sane, and a wire without it turns a 16-pair build into a puzzle.
Pair Identification
Numbered binders or a colour repeat every five pairs: the difference between a four-hour termination and a twelve-hour one, and between correct and swapped channels.
The Drain Wire
A foil shield needs a drain wire to terminate; braid terminates directly. Builds that forget the drain leave the shield floating – the hum that follows.
The Build Arithmetic
Material: wire plus connectors plus breakout hardware plus a box or moulded ends. Labour dominates: terminating two ends of a 16-pair snake is a skilled half-day. The comparison that matters: a finished 16-channel snake costs roughly the wire’s price plus connectors plus two to four hours of labour – which is why DIY makes sense for repairs, custom lengths and one-off geometries, and rarely for standard sizes. Repairs are the strongest case: replace one pair’s connector rather than the snake.
Repair-First Economics
A broken channel is usually one connector. Bulk wire and a spare connector turn a $300 replacement into a $15 repair – the category’s most common DIY win.
The One-Off Case
A 17 m run through conduit, or a DB25 interface: no standard product exists at that geometry, so the build is not optional.
Termination Practice
Per channel: strip without nicking the conductor, twist the drain with the shield lead, heat-shrink the pair, solder pin 1 to shield and pins 2/3 to the pair (observing the convention), then strain-relieve the bundle at the connector boot. Test each channel as it is finished – continuity and polarity – rather than at the end; a fault found mid-build is a five-minute fix, and one found after the boot is closed is a re-open. Label as you go. The build’s quality is decided by the last 20 mm at each connector, not by the wire.
The Nick Rule
A nicked conductor breaks under flex months later. Strip with the right gauge setting, and reject any conductor that shows a notch.
Test-As-You-Go
Continuity and polarity after each connector: the build’s faults are found while the boot is still open, which is the only cheap moment.
Bulk Wire Selection
| Parameter | Indoor / Short | Touring / Long |
|---|---|---|
| Gauge | 24 AWG | 20-22 AWG |
| Shield | Foil + drain | Foil + braid |
| Jacket | PVC | PUR |
| Pair ID | Colour code | Numbered binders |
| Spare pairs | +2 | +2 to +4 |
| Drum size | 100 m | 100 m / 500 m |
Real-World Application Scenarios
A repair bench keeps a 100 m drum of 16-pair wire and a box of connectors – most channel faults become a fifteen-minute fix. A theatre’s custom 14-pair run through conduit is built to length from bulk wire because no standard product fits. A rental house builds its own drop snakes with right-angle connectors, using 8-pair wire and PUR jacket for the hanging duty.
Recommended Internal Resources
(1) Product cluster – https://zh-zong.com/productlist/ (anchor: bulk multipair wire and snake connectors); (2) FAQ – https://zh-zong.com/faq/ (anchor: wire spec and termination questions); (3) Contact – https://zh-zong.com/contact/ (anchor: request drum pricing and pair counts).
- bulk multipair wire and snake connectors
- wire spec and termination questions
- request drum pricing and pair counts
Related Reading in This Series
- Snake Cable Construction: Wire Gauge, Shielding and What Survives
- XLR Snake Cable: Balanced Multichannel Runs, Wired and Verified
- XLR to XLR Snake: When Both Ends Are XLR (and When They Shouldn’t Be)
Frequently Asked Questions (FAQ)
Q: What gauge wire should a snake use?
A: 22 AWG for standard mic snakes to 30 m; 24 AWG for light short runs; 20 AWG when length or low-impedance drive demands it.
Q: Is building a snake cheaper than buying one?
A: For standard sizes, rarely – labour dominates. For repairs, custom lengths and one-off geometries, building is the cheaper and sometimes only option.
Q: Foil or braid shield in bulk wire?
A: Foil for fixed and indoor runs, braid (or foil plus braid) where the cable flexes or RF is present. Foil needs a drain wire to terminate.