Live-line tool (hot stick) tester
Updated 2026-10-27
Data records
- An alternating-current hipot test set with a guarded leakage-current measurement in the return leg also tests the insulating booms of aerial work platforms and bucket trucks, a test for which ANSI/SIA A92.2 gives the specification.
- The readout is leakage current under guarded metering, with the peak value held; the guard keeps stray and surface leakage of the electrode arrangement out of the measured current, and the test voltage is applied per section of stick length.
- Live-line tools are wiped clean and visually inspected before each day's use and are removed from service periodically for examination, cleaning, repair and a wet test; the maker electrically tests the foam-filled pole at the factory.
- A portable wet/dry tester is placed on the stick and moved along it in overlapping positions, then the stick is turned a quarter turn and the pass repeated until the full circumference has been covered; stray currents through the air and inside the tester are zeroed out before the stick is introduced, and a check bar drives the meter to full scale to confirm that the tester works.
- A live-line tool tester applies a high voltage along a hot stick and reads the leakage current through or over the fiberglass-reinforced plastic, revealing surface contamination, absorbed moisture and internal conductive paths such as carbon tracks that visual inspection cannot find.
- A shop tester for several sticks wraps electrodes around each stick as it is loaded, alternating high-voltage and return electrodes at fixed intervals along the length so that each section is stressed and metered separately; a failing stick stops the test with an audible signal and the failed position is indicated.
- The instrument class is written Live-line tool (hot stick) tester. Value: Live-line tool (hot stick) tester.
- A tool is tested dry and then wet, the wet test being made after the tool is lightly misted with distilled or deionized water; silicone or wax applied to the surface can fill scratches and voids and produce a false pass on the wet test.
Elsewhere in the family
- Osha qualified person related entry on Electrical Testing Reference
Sources
- Electrical Testing Reference editorial taxonomy, Electrical Testing Reference editorial taxonomy of test methods, 2026-10 edition, Electrical Testing Reference. Held as: Own observation.
- Hipotronics product page, 100kV Digital AC Hipot Tester (100HVT-DI), web page edition, Hipotronics (Hubbell). Held as: Public page. Publisher page
- Hubbell Power Systems blog article, Testing Live-Line Tools: CHANCE Wet/Dry Portable Hotstick Tester, web page edition, Hubbell Power Systems (CHANCE). Held as: Public page. Publisher page
- Hubbell Power Systems product page, Wet/Dry Hotstick Tester 115 V (C4033178), web page edition, Hubbell Power Systems (CHANCE). Held as: Public page. Publisher page
- Von Corporation product page, TVM Series live line tool testers, web page edition, The Von Corporation. Held as: Public page. Publisher page
Changelog (18 entries)
| Date | Revision | Change |
|---|---|---|
| 2026-10-27 | created (instr.live-line-tool-tester.aerial-lift-testing) | |
| 2026-10-27 | revised (instr.live-line-tool-tester.aerial-lift-testing) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.aerial-lift-testing) | |
| 2026-10-27 | created (instr.live-line-tool-tester.guarded-leakage-readout) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.guarded-leakage-readout) | |
| 2026-10-27 | created (instr.live-line-tool-tester.in-service-inspection) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.in-service-inspection) | |
| 2026-10-27 | created (instr.live-line-tool-tester.portable-tester-method) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.portable-tester-method) | |
| 2026-10-27 | created (instr.live-line-tool-tester.purpose) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.purpose) | |
| 2026-10-27 | created (instr.live-line-tool-tester.shop-tester-electrodes) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.shop-tester-electrodes) | |
| 2026-10-27 | created (instr.live-line-tool-tester.title) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.title) | |
| 2026-10-27 | created (instr.live-line-tool-tester.wet-versus-dry) | |
| 2026-10-27 | revised (instr.live-line-tool-tester.wet-versus-dry) | |
| 2026-10-27 | review_status unreviewed -> software_reviewed (instr.live-line-tool-tester.wet-versus-dry) |
Cite this page
Cite the governing standard for the fact itself; cite this page as the finding aid.
"Live-line tool (hot stick) tester." Test Instrument Reference. 2026-10-27. https://www.testinstrumentreference.com/instruments/live-line-tool-tester/.
Test Instrument Reference, Live-line tool (hot stick) tester (Oct. 27, 2026), https://www.testinstrumentreference.com/instruments/live-line-tool-tester/.
@misc{etr-instruments-live-line-tool-tester,
title = {Live-line tool (hot stick) tester},
howpublished = {\url{https://www.testinstrumentreference.com/instruments/live-line-tool-tester/}},
organization = {Test Instrument Reference},
publisher = {Test Instrument Reference},
year = {2026},
note = {last substantive change 2026-10-27}
}{{cite web |title=Live-line tool (hot stick) tester |website=Test Instrument Reference |publisher=Test Instrument Reference |url=https://www.testinstrumentreference.com/instruments/live-line-tool-tester/ |date=2026-10-27 |access-date=}}