Spotting wear and tear on used gear: my quick routine

If the outer jacket’s just a little scuffed, I’ll wrap it up with heat-shrink tubing or proper electrical tape, but if the copper is showing or it feels stiff and crumbly, I just toss it. Not worth the risk, honestly. A new cord’s way cheaper than a hospital bill.

- I get where you’re coming from, but I’ve had luck salvaging cords that looked pretty rough.
- If the copper’s just barely peeking out and the rest of the wire’s still flexible, I’ll cut out the bad section and splice in a new bit with proper connectors and heat-shrink.
- Not saying it’s for everyone, but sometimes it’s worth the effort if you’re on a tight budget or the cord’s a weird size you can’t easily replace.
- That said, if it’s stiff or crumbly, yeah, I’m with you - straight to the trash.
- Just feels wasteful tossing stuff that’s still got some life left, you know?

I’m with you on not tossing cords unless they’re really toast. I’ve patched up a few myself - heat-shrink tubing is a lifesaver, and honestly, sometimes the “Frankenstein” cords outlast the new ones. That said, if the insulation’s brittle or you see green corrosion on the copper, I don’t mess around. Not worth risking a short or worse. Still, it’s wild how much stuff gets thrown out that just needs a little TLC...

- Totally agree on heat-shrink tubing - saved a bunch of old extension cords that way.
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if the insulation’s brittle or you see green corrosion on the copper, I don’t mess around.

Heat-shrink’s definitely saved my bacon more than once, but I gotta say - I’m a little less quick to toss cords just for a bit of green on the copper. Maybe I’m just stubborn (or cheap?), but if it’s not all the way through and the wire’s still solid, I’ll sometimes clean it up and slap on a fresh wrap. Haven’t burned the house down yet, knock on wood.

Liquid electrical tape though... yeah, that stuff’s like a mystery box. Sometimes it seals up nice, other times it flakes off like old paint. I tried it on a garden light cord last summer and it lasted about three rainstorms before peeling like a sunburn. Maybe better for indoor stuff?

As for resistance testing, honestly, I probably should do it more. I mostly go by the “does this look sketchy” method unless I’m wiring something that’ll be running all day. But I’ve seen some cords that looked fine outside and were a mess inside. Makes me wonder if I’m playing extension cord roulette half the time...

I get where you’re coming from on not tossing cords at the first sign of green. I’ve done the same - scraped off the corrosion, checked for any real damage, and wrapped it up tight. If the copper’s still got some shine under the green, I figure it’s got some life left. But I did have one extension cord that looked fine on the outside, only to find a whole section inside was basically dust after a few years in a damp shed. That was a wake-up call.

Liquid electrical tape is hit or miss for me too. Used it on a rooftop junction box once (bad idea), and after one summer storm, it peeled right off. Now I stick to heat-shrink or proper connectors for anything exposed to weather. Indoors, liquid tape seems to hold up better, but I still don’t trust it for anything critical.

I’m guilty of the “eyeball test” too, but after that cord incident, I started checking resistance with a meter if there’s any doubt. Takes an extra minute but beats rewiring after something fails mid-job... or worse.

I get the urge to keep cords going as long as possible, but I’m starting to wonder if it’s worth the risk. I had a lamp cord that looked totally fine - no green, no cracks - but it randomly started sparking at the plug. Made me rethink my “if it looks okay, it’s okay” approach. Do you ever just toss cords if they’re old, even if they pass the meter test? I’m still figuring out where to draw the line between being thrifty and being safe.

Also, is heat-shrink easy to use for someone who’s never tried it? I’ve only ever done electrical tape, and it always feels a bit sketchy...

I know the feeling - sometimes I look at an old cord and think, “eh, it’s survived this long…” but then I remember how fast things can go sideways. If there’s any sparking or weirdness, I pitch it, no matter how good it looks. As for heat-shrink, it’s actually way easier than I expected. Just cut a piece, slip it on, hit it with a hair dryer or lighter (carefully), and it tightens up. Definitely feels less sketchy than electrical tape flapping around.

As for heat-shrink, it’s actually way easier than I expected. Just cut a piece, slip it on, hit it with a hair dryer or lighter (carefully), and it tightens up.

Yeah, I was skeptical about heat-shrink at first - figured it’d be more hassle than it’s worth. But you’re right, it’s surprisingly simple and holds up way better than tape. Still, if the cord’s got any real damage, I’m with you... not worth the risk.

Still, if the cord’s got any real damage, I’m with you... not worth the risk.

I get where you’re coming from, but I’ve actually had decent luck patching up minor nicks with heat-shrink, especially on low-voltage stuff. For anything with deeper cuts or exposed wires though, I’d rather just replace the whole cord. Sometimes it’s tempting to do a quick fix, but I’ve seen too many “temporary” repairs turn into bigger headaches down the line. If you’re dealing with power tools or extension cords, I’d say err on the side of caution - no sense risking a short or worse.

I get where you’re coming from, but I’ve actually had decent luck patching up minor nicks with heat-shrink, especially on low-voltage stuff. For anything with deeper cuts or exposed wires tho...

That’s a solid approach. I’ve patched up a few lamp cords with heat-shrink too, but anything that looks even a bit sketchy on my circular saw or extension cords gets swapped out. Like you said, those “temporary” repairs have a way of sticking around longer than planned… and not always in a good way. It’s just not worth the risk for peace of mind. Your routine sounds pretty dialed in - better safe than sorry when it comes to electricity.

- That’s a good call on swapping out anything that looks “even a bit sketchy.” I’ve tried to convince myself a few times that a quick fix would hold, but it’s always in the back of my mind when I’m using the tool. Not worth the stress.

- Heat-shrink is great for minor stuff, like you said - lamp cords, maybe a phone charger if you’re careful. But once you see copper or there’s a deep gouge, I’m with you: time to retire it.

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those “temporary” repairs have a way of sticking around longer than planned… and not always in a good way.

- One thing I started doing is keeping a roll of colored electrical tape just for marking cords that need to be replaced. If I see a nick or questionable spot, I’ll wrap it with red tape as a reminder. That way, I don’t accidentally keep using it thinking it’s fine.

- Extension cords are the big one for me. I’ve seen too many melted plugs and scorched outlets from people trying to get one more season out of a beat-up cord. Not worth the fire risk.

- For tools, I’ll sometimes open up the plug end and check for corrosion or loose wires if something feels off. It’s surprising how often you’ll find a screw backing out or some green gunk in there.

- I get why folks want to save money and avoid tossing stuff, but with electricity, it’s just not worth gambling. Peace of mind is huge.

- Your routine sounds pretty dialed in. If more people took five minutes to check their gear before plugging in, there’d be a lot fewer “how did this catch fire?” stories floating around.

- Only thing I’d add: if you’re ever unsure, just replace it. The cost of a new cord or plug is nothing compared to what could go wrong.

Nice to see someone else taking this seriously. Too many people just shrug off little nicks and hope for the best...

Interesting to see everyone leaning toward immediate replacement for anything questionable. I get the safety angle, but is there really no room for a proper repair? For instance, I’ve used heat-shrink and liquid electrical tape on a lamp cord that just had a tiny nick in the insulation - never saw any copper, and I checked resistance with a multimeter after. Still holding up fine after a year. I get nervous about tossing stuff that might be perfectly safe with a careful fix. Maybe I’m just overthinking it, but sometimes it feels wasteful to replace cords at the first sign of wear...

- I totally get where you’re coming from. I’ve patched up a few cords myself over the years, especially on older lamps or extension cords that just had a little scuff on the jacket.
- Used heat-shrink tubing and electrical tape more than once. As long as the copper wasn’t showing and the cord still felt flexible, it seemed fine to me.
- One time, I fixed a vacuum cleaner cord that had a small nick - wasn’t deep, but it bugged me. Covered it up, kept an eye on it, and it’s still working after three years. No overheating or weird smells.
- My rule of thumb: if there’s no exposed wire, no stiffness or brittleness, and the fix is solid (not just a quick wrap), I’ll keep using it.
- That said, I do get why folks lean toward immediate replacement - especially with stuff that draws a lot of current or gets moved around a lot (like power tools). The risk is higher if you’re not sure about the repair holding up under stress.
- For things that stay put and don’t get flexed much, like a bedside lamp, I’m less worried. Still, if I see any sign of arcing or if the repair starts to peel up, out it goes.
- Waste bothers me too. Sometimes it feels like we’re tossing perfectly good stuff just because of a tiny flaw. But yeah… safety does have to come first with electricity.
- Guess it’s all about balance - knowing when a careful repair makes sense and when you’re better off not risking it. Probably depends on your comfort level and how critical the item is.

I wouldn’t say you’re overthinking it at all - just being cautious and practical at the same time.

Waste bothers me too. Sometimes it feels like we’re tossing perfectly good stuff just because of a tiny flaw. But yeah… safety does have to come first with electricity.

I hear you on the waste. I’ve got a drawer full of old cords and chargers that just needed a little TLC, but most folks would’ve tossed them. Last winter, I fixed up a space heater cord that had a small nick - nothing major, just the outer jacket. Used heat-shrink and some patience, and it’s been fine ever since. I check it every now and then, but honestly, I trust my own repairs more than some of the cheap new cords out there.

That said, I’m not shy about tossing something if it looks sketchy or if I can’t get a solid fix. I’m all for saving money, but not at the expense of burning the house down. For stuff that gets moved a lot (like you mentioned with power tools), I don’t mess around - those get replaced. But for a lamp that sits in the same spot? I’ll patch it up and keep an eye on it.

It’s just common sense, really. Not everything needs to go straight to the landfill over a little wear and tear.

I’m right there with you - if I can patch something up safely, I’ll do it. My trick is to run my fingers along cords and look for any soft spots or weird bends. If it feels off or smells burnt, it’s out. Sometimes I’ll even give it a little wiggle test (not exactly scientific, but hey, it works). I’d rather spend five minutes checking than risk a fire over a $10 cord.

That’s a solid routine. I do something similar with my extension cords and power tools - if the insulation feels thin anywhere, or if there’s a kink that won’t straighten out, it’s usually a sign it’s time to toss it. I’ve seen too many guys try to tape up a bad spot and then forget about it until it shorts out or trips a breaker. Not worth the risk, especially on job sites where you’ve got sawdust everywhere.

I will say, sometimes folks get a little too confident with patch jobs. A bit of electrical tape is fine for a quick fix, but if the wire inside is exposed or you smell that burnt plastic smell, it’s better to just replace the whole thing. Ten bucks is nothing compared to the headache of dealing with an electrical fire.

One thing I’ve picked up - if you’re working outside and cords get wet, even small nicks can cause trouble. I usually keep a couple of spare cords in my truck just in case. Easier than scrambling around when you’re halfway through tearing off shingles and something goes dead...

I’m with you on not trusting patched cords for long-term use. I’ve tried heat-shrink tubing as a more durable fix, but honestly, if the damage is anywhere near the plug or there’s any sign of melting, I just replace it. It’s tempting to save a few bucks, but one electrical mishap can cost way more in repairs - or worse. I also check for any stiffness in the cord, especially after winter storage. Sometimes they look fine but have internal breaks that only show up when you move them around.

I hear you on the temptation to patch things up, but I’ve learned the hard way that cords are one of those things you just don’t mess around with. Years ago, I tried to “fix” a frayed extension cord with electrical tape - looked fine until it started sparking behind a shelf. Never again. Now, if there’s any sign of melting or if the cord feels stiff in spots, it goes straight in the trash. I’d rather spend a few bucks than risk a fire or shock. Sometimes you can’t see the damage until it’s too late...

Patch jobs might seem like a quick fix, but in my line of work, shortcuts with safety gear or tools usually come back to haunt you. I tried to salvage a worn-out drop cord once - taped it up real tight, thought I was being clever. Next rainstorm, the thing shorted out and tripped half the breakers in the shop. Lesson learned. Now, if I spot any nicks or weird stiffness on cords or harnesses, they're gone. Not worth risking your neck (literally) when you're up high. Sometimes those little signs are all you get before something fails...