Switched from a multimeter to a clamp meter for compressor starts and it saved me 3 hours last week

I always used my trusty old multimeter to check start capacitors on fridges. But last week I had a GE side-by-side that kept tripping the breaker. I spent like 2 hours probing contacts and getting weird readings. Finally grabbed my buddy's clamp meter and found the start winding was drawing 45 amps on startup instead of the normal 20. Took me 10 minutes total. Now I'm thinking about dropping $60 on a decent clamp meter for my van. Anyone else made the switch and found it worth it for hard start issues?

3 comments

3 Comments

kelly38512d agoMost Upvoted

That "probing contacts and getting weird readings" comment hit home for me... I had the same exact issue with a Kenmore freezer last month. I spent forever messing around with my multimeter trying to get good contact on those crusty compressor terminals and kept getting readings that made no sense. Finally grabbed a cheap clamp meter from Harbor Freight just to check and found the run capacitor was totally open, letting the compressor pull way more current than normal on startup. It took me maybe 15 minutes total once I stopped fighting with probes and just clamped around the wire. I get that some folks stick with their Flukes and it works for them, but for me the clamp meter was a game changer for diagnosing those hard start problems where you just need to see what the current is doing in real time without touching hot terminals. I'd say get one, even a cheaper model, and you'll probably wonder why you didn't switch sooner.

nancy_ross13d ago

Huh, 45 amps on startup? That's pretty wild. But honestly I've been using the same Fluke 87V for like 15 years and it handles everything fine for me. I just don't see how a clamp meter is gonna save you that much time unless you're really struggling with probe placement. Most of my hard start issues I can figure out with a simple voltage drop test and checking for thermal overloads. Maybe it's just my old school habits but I'd rather spend that $60 on a case of beer and some good test leads.

williams.kim12d ago

Probing contacts and getting weird readings" sounds like maybe the issue was bad connections or user error, not the tool itself lol. I've had a clamp meter sit in my toolbox for years and it rarely does anything my multimeter can't handle with a little patience. Honestly, 3 hours saved sounds like a stretch unless you were already set on buying something new anyway.