The presence of which chemical in fluorescent fixtures is a safety concern for electricians?

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Multiple Choice

The presence of which chemical in fluorescent fixtures is a safety concern for electricians?

Explanation:
PCBs were used as dielectric fluid inside older fluorescent-light ballasts. They are toxic and persistent, so exposure can occur if a fixture is damaged, leaking, or heated during servicing. That makes PCB-containing fixtures a hazardous situation for electricians, requiring careful handling, proper PPE, and correct disposal procedures. The other gases listed—nitrogen, hydrogen, and helium—do not carry the same health and environmental hazards in this context, as they are not the substances historically found in fluorescent fixtures.

PCBs were used as dielectric fluid inside older fluorescent-light ballasts. They are toxic and persistent, so exposure can occur if a fixture is damaged, leaking, or heated during servicing. That makes PCB-containing fixtures a hazardous situation for electricians, requiring careful handling, proper PPE, and correct disposal procedures. The other gases listed—nitrogen, hydrogen, and helium—do not carry the same health and environmental hazards in this context, as they are not the substances historically found in fluorescent fixtures.

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