How to read a cable reel tag
A reel tag is the only part of a cable package that carries length, date and construction together. Read it before you weigh anything, and photograph it before the reel moves.
- Flange and lagging
- Footage and date
- Photograph before moving
Cable arrives on a reel with two identities. The jacket print says what the cable is. The tag says how much of it there is, when it was made and who ordered it. Buyers price both, but the tag is what turns a reel from a weight into a length. A storehouse that keeps its tags can be reviewed from a list. A storehouse that has lost them has to be measured reel by reel, and the reels that cannot be measured get treated as recovery material.
The tag is not a label in the ordinary sense. It is a shipping document that stayed with the goods, and it is the only paper most reels will ever carry. Read it carefully the first time, because the second reading may not be possible. Sun fades thermal print, coolant and oil lift ink, and a tag that was stapled to lagging usually leaves with the lagging when someone opens the reel on a job site.
The method, step by step
Look at both flanges and inside the lagging
The tag is normally wired through a flange hole, stapled to the lagging or tucked inside the barrel. Check both flanges, because a reel re-tagged on site often carries two papers and only one came from the mill. If the reel sat outside, the outward-facing side may be blank while the inner face is still legible. Ease the tag flat rather than tearing the wire out, photograph it, and put it back where you found it.
Read the construction line as a sentence
A line such as 3/C 4/0 AWG 15 kV 133% EPR, tape shield, PVC jacket is a complete description, not a product name. Conductor count, size, voltage class, insulation type and shield construction each change what the cable is worth and who can install it. Copy the line exactly as printed. Tidying it into a shorter name loses the fields a buyer prices on, and those fields are often the difference between feeder cable and scrap.
Find the two footage numbers
Most mill tags carry a length in feet and a counter pair, written as a start and an end figure against a running total. On a full reel the pair is a formality. On a partial reel it is the whole story, because the difference between the two numbers is what remains. A tag that states only a nominal length is a shipping statement, not a measurement, and that reel should be measured before anyone quotes footage on it.
Check the date, the standard marks and the purchase order
The date of manufacture tells you how long the cable has sat in a storehouse and whether a manufacturer’s warranty window is still open. Look for the standard marking the construction requires, whether that is a UL listing mark or an ICEA reference, and for a purchase order number or customer name. The purchase order is the thread back to the project file, the submittal package and the mill certification, which is how a lost tag gets rebuilt months later.
See what a job reel is missing
Cable left over from an installation usually carries a contractor’s marker, a cut sheet or nothing at all. That is a different document. It may give a size and a rough length, but it rarely gives the mill date, the standard marks or the counter pair. Treat a hand-written label as a claim to be tested against the jacket print and the reel geometry, not as a mill tag, and price it accordingly.
Rebuild a lost tag from what survives
Four sources outlast a lost tag: the flange stencil, the jacket print, the reel geometry and the paperwork. Measure flange diameter and traverse width, count wraps against the barrel circumference, and multiply through the layers. Cross-check the result against any print counter mark and the original shipping documents. Then mark it as an estimate. An honest estimated length is usable; a number presented as certified when it is not will be challenged.
Before the next call
The habit worth building is simple. Every reel gets read, transcribed and photographed before it is moved, and the transcription goes into one list with the reel number beside it. A storehouse with that list can be reviewed in an afternoon. A storehouse without it gets reviewed reel by reel, and the untagged reels get priced as recovery material because there is nothing else to price them on.
If the tag is damaged but readable, keep it. Tape it flat to a card, write the reel number on the card, and fasten the card inside the flange. The paper is the evidence. A clean new label in your own handwriting is only a note.
Questions on this
The tag says 1,250 feet but the reel is clearly part used. Which figure do I trust?
Trust neither until they agree. A mill tag states the length at shipment, and a partial reel has had cable cut off it since. Look for a counter pair or a cut note on the reverse of the tag. If there is none, measure the reel by wraps and layers and record that as an estimate, with the shipped length beside it as the original figure.
Does the jacket print count as a tag?
No. Jacket print identifies the construction, the manufacturer and sometimes a sequential footage mark, but it carries no date of manufacture and no statement of how much cable is on this particular reel. Print is the best cross-check when a tag is missing or a number looks wrong, and it is often the only identification left on cable that was cut and re-spooled.
The length is marked in metres. What do I do with that?
Convert once, write both figures down, and keep the original tag. Some imported cable is tagged in metres and a few constructions are dual marked. A metre is roughly three and a quarter feet, so on a long reel the gap between the two readings is large enough to change an offer. State the unit on your manifest so nobody downstream assumes feet.
Put the guide to work
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