Equipotential earthing study: Equipotential wiring is unnecessary

Kathryn Pui Tse Foong; A. Watson; A. Avolio

doi:10.1007/BF03178675

Equipotential earthing study: Equipotential wiring is unnecessary

Kathryn Pui Tse Foong^*, A. Watson, A. Avolio

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

This study was undertaken to determine the ongoing need for Equipotential (EP) earthing as required in AS/NZS 3003, section 4.4.2. A total of 2279 earth points were tested in four clinical institutions in Body Protected areas (as defined in AS/NZS 3003). Each earth point was tested for potentials existing in the earthing in order to assess whether any potentials exceeded the 100 mV requirement of AS/NZS 3003 for EP earthing. The voltage measured was 1.21 mV +/- 3.59 mV, (mean +/- standard deviation (SD)), with a of 99% confidence interval between 1.0 mV and 1.4 mV. This study suggests that the requirements for EP earthing in section 4.4.2 of AS/NZS 3003 are unnecessary. It is further suggested that Standards Australia review these requirements with the view of withdrawing them from the Standard.

Original language	English
Pages (from-to)	151-154
Number of pages	4
Journal	Australasian Physical and Engineering Sciences in Medicine
Volume	27
Issue number	3
DOIs	https://doi.org/10.1007/BF03178675
Publication status	Published - Sept 2004
Externally published	Yes

Keywords

Earthing
Electrical standards
Equipotential
Micro-electrocution

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10.1007/BF03178675

Cite this

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title = "Equipotential earthing study: Equipotential wiring is unnecessary",

abstract = "This study was undertaken to determine the ongoing need for Equipotential (EP) earthing as required in AS/NZS 3003, section 4.4.2. A total of 2279 earth points were tested in four clinical institutions in Body Protected areas (as defined in AS/NZS 3003). Each earth point was tested for potentials existing in the earthing in order to assess whether any potentials exceeded the 100 mV requirement of AS/NZS 3003 for EP earthing. The voltage measured was 1.21 mV +/- 3.59 mV, (mean +/- standard deviation (SD)), with a of 99% confidence interval between 1.0 mV and 1.4 mV. This study suggests that the requirements for EP earthing in section 4.4.2 of AS/NZS 3003 are unnecessary. It is further suggested that Standards Australia review these requirements with the view of withdrawing them from the Standard.",

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AU - Avolio, A.

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Equipotential earthing study: Equipotential wiring is unnecessary

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Keywords

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