IDEAL Industries 61-164 SureTest® Circuit Analyzer

That's what the SureTest 61-164 is built around. It runs its GFCI and EPD trip tests plus its 12A, 15A and 20A load tests without disturbing sensitive loads sharing the circuit, so you can survey live receptacles in an occupied office or a data closet instead of scheduling a shutdown. It also reads Estimated Load on Line up to 15A, so you can see what a circuit is already carrying before you add to it.

Voltage drop under load is the measurement that finds it, and the 61-164 does that directly. Load the circuit at 12A, 15A or 20A and the analyzer reports the drop, plus hot and neutral conductor impedances separately, so you can tell whether the problem sits on the hot side, the neutral, or a shared undersized run. True RMS measurement means the numbers hold up on circuits feeding electronic loads with distorted waveforms.

Yes, false (bootleg) ground detection is one of its core tests. That is the failure a three-light plug tester cannot see: someone jumpered neutral to the ground screw so a three-prong receptacle reads correct while there is no real equipment grounding conductor behind it. The 61-164 identifies proper wiring in 3-wire receptacles and flags the bootleg specifically, which is the test that matters when you are inspecting older buildings that were converted from two-wire.

Yes, an adapter. Isolated ground verification on the SureTest 61-164 requires the IDEAL 61-176 adapter, which is a separate item from the analyzer itself. If your scope includes the orange isolated-ground receptacles in a hospital wing or a server room, order the adapter along with the tester. Every other test, including GFCI, EPD, voltage drop and bootleg ground, runs off the analyzer alone.

They answer different questions. A three-light tester tells you which of three conductors is missing or reversed and nothing more. A circuit analyzer like the 61-164 loads the circuit and measures it: voltage drop under load, hot and neutral impedances separately, line and peak voltage, GFCI and EPD trip behavior, and a bootleg ground the three-light tester will happily report as correct. If your job is proving a receptacle exists, the cheap tester is fine. If your job is documenting circuit condition for a punch list, a commissioning report or a recurring MRO inspection, you need the loaded measurements.

It uses a super-bright OLED display, which is the practical difference from an LCD on this kind of tool: OLED holds contrast at wide viewing angles and in low light, so you can read it kneeling at a floor box in an unlit mechanical space without a headlamp on the screen.

The part number is 61-164, from IDEAL Industries, and it is a single model with no finish, size or configuration choices to specify. The one thing worth adding to the order is the 61-176 adapter if you need isolated ground verification.