ETT Study Guide Book 1: Safety

A. Risk Assessment

An electrical safety risk assessment is a pre-work process which includes a review of potential electrical hazards, the associated foreseeable tasks, and the protective measures that are required in order to maintain a tolerable level of risk.

1. Safe Work Practices 2, 3, 4

Identify safe work practices with regard to hazards encountered on the job and associated risk with respect to assigned tasks 2

Level 2 technicians are expected to have sufficient knowledge and experience to be qualified for assuring their own safety. A minimum of 40 hours classroom training in safety is required and will cover general construction and electrical safety.

Identify safe work practices with regard to hazards encountered on the job 3, 4

Level 3 and 4 technicians are responsible for themselves and expected to have sufficient knowledge to protect the safety of others. Level 4 technicians are responsible for supervising large projects and multiple crews.

  • See Section 3: Safe Work Environments

2. Protection Boundaries 2, 3, 4

Determine the location and implications of shock and arc-flash protection boundaries

NFPA 70E stipulates two approach boundaries in addition to the arc flash protection boundary that must be known and observed. The shock hazard boundaries are dependent on the system voltage.

3. Safe Work Environments 3, 4

Identify requirements to create a safe work environment on the job site

Identifying and mitigating potential job hazards is important to prevent possible injuries or accidents. Before starting each job that involves exposure to electrical hazards, the employee in charge shall complete a job safety plan and conduct a job briefing with the employees involved.

Last Update: May 25, 2022