Equipment & SystemsQuestion 330 of 521
The DC PV disconnect label must display what information?
a.Only the manufacturer name
b.Nothing is required
c.AC frequency of the system
d.Maximum PV system voltage and maximum circuit current of the DC circuit
Explanation
Section 690.53 requires the DC photovoltaic system disconnect to be marked with the rated maximum voltage and the maximum circuit current for the DC circuits, among other values. This information helps responders and service personnel understand the DC hazard; manufacturer name or AC frequency alone would not satisfy the labeling requirement.
Law Reference: 2023 NEC §690.53Practice all 521 questions free — no signup required.
Related questions on this topic
- A PV system disconnecting means must be installed how?
- For a one- or two-family dwelling, what is the maximum permitted PV system DC voltage?
- Under the busbar interconnection rule, the sum of the main utility overcurrent device plus the inverter (power-production) overcurrent device generally may not exceed what percent of the busbar rating?
- A power-limited fire alarm (PLFA) power source is limited to what maximum output?
- How must fire alarm circuit cables be installed and supported?
- What best characterizes a Class 2 circuit?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-10 Electrical Trade Examination · How we review