Instruments
PG1 Temporary Protective Ground (TPG) Tester

The PG1 is a compact, high-performance tool that quickly verifies TPG resistance and grounding integrity, ensuring safe, reliable operation in under a minute at any location.
- Battery-powered and portable.
- Reliably test TPG jumper resistance.
- Simple pass/fail indication.
- Accurate resistance measurement indication.
- No manipulation of TPG cable required (leave it coiled up!).
- Verify TPG connection to substation ground grid.
- 1 µΩ TPG test resolution.
- User-configurable TPG conductor configurations.
- 1-year calibration period.
- Durable case and components.
- Greater than 100 TPG measurements per battery charge.
- Inbuilt self-test function.
- Automatic power off after 1 hour.
- TPG test current user configurable from 10 to 100 A.
- Connection point test at 5 A.
- Easy-to-use user interface.
- 50′ connection point test lead.
- 1-year warranty.
- Range of specialty adaptors available to suit TPGs with any termination.
Do you trust your TPG testing with your life?
It’s critical to ensure that TPGs are adequately low-resistance and properly connected to an intact grounding system to protect personnel relying on them for safety.
The PG1 is a portable test instrument designed to dramatically improve the confidence and safety of TPG installation. It allows fast and accurate measurements of your TPG installation every time – in under a minute.
TPG mode provides a TPG resistance pass/fail result (to user requirements or in accordance with ASTM F2249) utilizing a test current of up to 100 Adc.
CPT (Connection Point Test) mode allows for a resistance measurement between the TPG connection point and the surrounding grounding infrastructure to verify adequate connection.
Inclusions
- PG1 instrument
- Plug pack charger
- 50′ CPT lead
- CPT reference lead

Optional TPG Connection Adapters
In stock, made to order, or custom-made.

- Sturdy stainless steel and aluminum construction.
- Greater than 100 A test capacity.
- Use with other adaptors to test any TPG.
- Easy-tighten clamp for quick installation onto PG1 current bars.



1″ ball stud adaptors with 5/8″ shaft diameter and a 5″ shaft length.
1/2″ and 3/4″ grounding elbow TPG conductor adaptors.