Arc Flash Hazard Warning Labels
Legal requirements:
The Canadian Electrical Code rule 2-203 requires all electrical panels be labeled with this label. If you allow live electrical work, such as changing fuses, adjusting settings, removing or installing breakers while the power is on then;
The Occupational Health and Safety Act requires that employers protect their employees from known hazards including arc flash. It stipulates that if the employer is aware of a hazard then they must:
EDUCATE their employees as to the hazards they are exposed to,
TRAIN their employees on how to protect themselves against the hazard, PROVIDE the appropriate personal protective equipment (PPE), and ENSURE the PPE is used while being exposed to the hazard.
Conducting an arc flash study in accordance with the Canadian Workplace Electrical Safety Standard, CSA-Z462-15, is the first step in protecting your employees from the hazards of an arc flash.
Labels are provided for electrical equipment that could be opened during maintenance while energized. Labels are provided for the following equipment:
Disconnect Switch label – line side incident energy and voltage Switchgear(MB) label – line side main breaker incident energy and voltage Switchgear(BUS) label – bus bar incident energy and voltage Switchgear(Cell) label – line side incident energy and voltage
MCC label – line side incident energy and voltage for each cell Transformer label – max incident energy and max voltage on one label Panel label – main lugs incident energy and voltage
Splitter label – bus bar incident energy and voltage
CP(optional) label – control panels main connection incident energy & voltage
The arc flash study has been conducted in accordance with CSA-Z462-18, Incident Energy Method, using IEEE1584.