Journeyman Electrician Exam (NEC)Special Occupancies, Equipment, and ConditionsEasy
A health care facility is installing a new X-ray machine. The branch circuit supplying the X-ray equipment must be supplied by a minimum of how many separate feeders or branch circuits?
- ATwo
- BFour
- CThree
- DOne
Show answer & explanationAnswer & explanation
Correct answer: D. One
NEC Section 517.71(A) states that X-ray equipment shall be supplied by a separate branch circuit. While some critical equipment might require multiple sources, a single dedicated branch circuit is the minimum requirement for X-ray equipment itself.
Why the other options are wrong
- A. Two separate feeders/circuits are not a minimum requirement for X-ray equipment; this might apply to specific life support systems.
- B. Four circuits are excessive and not specified as a minimum for X-ray equipment.
- C. Three circuits are not required as a minimum for X-ray equipment under the NEC.
X-ray Equipment Circuiting
The NEC requirement for how X-ray equipment in health care facilities must be supplied by electrical circuits to ensure safe and reliable operation.
- Applies to X-ray equipment in health care facilities (NEC 517).
- Requires a separate branch circuit.
- Prevents interference with other equipment.
Memory trick: X-ray machine, a single circuit is keen, keeping it clean.