Fluke 377 FC

• The Fluke 377 FC true-rms clamp meter uses FieldSense™ technology to make
  testing faster and safer, all without touching a live conductor. You get
  accurate voltage and current measurements through the clamp jaw. Simply clip
  the black test lead to any electrical ground, put the clamp jaw around the
  conductor and see reliable, accurate voltage and current values on the
  display.