Fluke Fluke 323 True-RMS Clamp Meter, TRMS AC, 4kOhm,

The Fluke 323 clamp meter is a good basic troubleshooting tool for commercial and residential electricians. It includes True RMS measurements, optimized ergonomics, and large display for efficient troubleshooting. It's designed to perform in the toughest environments and provide noise-free, reliable results, so you can trust it to help you confidently diagnose problems almost anywhere. Its slim, compact size and rugged design make it well suited for measuring current up to 400 A in tight cable compartments.