Open

Panel

Test

the

Tester

Verify

Installation

Verify

Installation

Retest

the

Tester

Check

for

Voltage

Select

Tester

Test

the

Tester

Retest

the

Tester

Perform

Work

Check

for

Voltage

2

Electrical Safety

Verifying the Absence of Voltage

Prior to performing de-energized work on electrical

equipment, NFPA 70E requires that workers verify

equipment is in an electrically safe state. Until proven

otherwise, equipment must be treated as energized and

necessary precautions must be observed.

One of the steps in the process of verifying that equipment

is in an electrically safe state involves a test for the absence

of voltage.

Comparison of Testing Methods

Before and after testing, the functionality of the tester must

be verified on a known source. When using a portable tester,

this is a time-consuming process and may involve exposure

to electrical hazards.

and ensures the entire process is performed in the proper

sequence – every time, every test.

Possible Exposure to Electrical Hazards

Automatically Performed in Sequence

No Exposure to Electrical Hazards