Which statement best describes how to keep high and low voltage conductors separate inside an enclosure?

Which statement best describes how to keep high and low voltage conductors separate inside an enclosure?

• A. They may be mixed freely in a single compartment.
• B. They should be kept in separate compartments or separated by barriers to prevent interference.
• C. Separation is unnecessary if the enclosure is labeled.
• D. Separation is only required for outdoor installations.

Answer: (B)

Keep high and low voltage conductors physically separated inside an enclosure by using separate compartments or barriers. This separation prevents interference from the strong electric and magnetic fields of high-voltage circuits from coupling into sensitive low-voltage circuits, which can cause noise, misreads, or malfunctions. It also reduces the risk of arcing or fault paths between circuits if insulation fails. Simply labeling the enclosure doesn’t provide this physical separation, and separation is needed as a general safety and performance practice, not only in outdoor installations.

Keep high and low voltage conductors physically separated inside an enclosure by using separate compartments or barriers. This separation prevents interference from the strong electric and magnetic fields of high-voltage circuits from coupling into sensitive low-voltage circuits, which can cause noise, misreads, or malfunctions. It also reduces the risk of arcing or fault paths between circuits if insulation fails. Simply labeling the enclosure doesn’t provide this physical separation, and separation is needed as a general safety and performance practice, not only in outdoor installations.