SAF603S Switching of Electrical Equipment 6/23/2017 Revision 3

Objectives This training outlines the safe work practices required when interacting with electrical equipment in a normal, closed cover scenario. Examples include: Closed doors (e.g. hinged doors on disconnect/safety switch closed and latched) Secured covers (e.g. all screws present & secured on a panelboard cover) No exposure to energized parts No evidence of an impeding failure (overheating, short circuit, etc.) Typical activities include: Switching a circuit breaker Switching a motor control center (mcc) Switching a disconnect/safety switch Switching of the main disconnect (not simple on/off controls) switch on Class 2 or Class 3 equipment (contact system owner if unsure of equipment classification) [does not apply to plugging and unplugging of cord-and-plug equipment or to equipment of 120 volts and below] This training applies ONLY to Electrical Equipment in a Closed Cover Scenario 5/16/2017 Revision 2

Minimum PPE to Execute Switching Tasks Safety glasses Leather gloves Long sleeve shirt (non-melting or untreated natural fiber) Long pants (non-melting or untreated natural fiber) 5/16/2017 Revision 2

One Hand Switching Rules Be trained and authorized to operate the equipment Wear the proper PPE Keep unqualified persons at a safe distance from the switching activity Properly interrupt the load current Power down equipment so the current draw is as close to zero as possible Stand to the side of the enclosure Do Not reach across the door Do Not face the equipment 5/16/2017 Revision 2

Stop Work IF at anytime a door or a cover needs to be removed from a piece of electrical equipment and it is not in an “electrically safe work condition” (de-energized and properly locked, tagged, and tried (LTT)), THEN STOP WORK! This training module is only for closed cover (no exposure to any energized parts) work. Further electrical training is required for working near or on exposed energized parts. 5/16/2017 Revision 2

Operation of External Meters This training allows for the operation of Voltage Verification Units (VVU) and other panel mounted diagnostics When no barriers are breached When the worker is not exposed to energized parts 5/16/2017 Revision 2

Things to Remember Electrical hazards are Real ! Acquire the necessary skills for the area in which you are working Apply all electrical training skills you’ve been taught Electrical safety is a Lab wide effort Everyone has a responsibility to report any unsafe electrical acts/concerns to his/her supervisor or to the Electrical Safety Engineer Please click below to update your record Update 5/16/2017 Revision 2