PV Panel Grounding: Difference between revisions
Jump to navigation
Jump to search
| Line 1: | Line 1: | ||
=NEC 690 - Covers PV Systems= | =NEC 690 - Covers PV Systems= | ||
*690.45 - size of PV equipment grounding conductors - [[Table 250.122]] | *690.45 - size of PV equipment grounding conductors - [[Table 250.122]] + no less than 14 ga. | ||
*690.9(A) says that we don't need overcurrent device for PV if the wires can handle short current capacity of PV. But good luck trying to convince a code official. | |||
*PV Grounding pDF [http://solarabcs.org/about/publications/reports/systemgrounding/pdfs/SystemGrounding_studyreport.pdf] | |||
=Equipment Grounding= | =Equipment Grounding= | ||
Revision as of 19:32, 15 September 2023
NEC 690 - Covers PV Systems
- 690.45 - size of PV equipment grounding conductors - Table 250.122 + no less than 14 ga.
- 690.9(A) says that we don't need overcurrent device for PV if the wires can handle short current capacity of PV. But good luck trying to convince a code official.
- PV Grounding pDF [1]
Equipment Grounding
- PV panels should follow electrical grounding conductor sizes - [2]
- Ie, for 30A DC, we need 10 ga ground.
- PV frames must be connected to PV system equipment grounding conductor [3]
- After leaving the PV array, the equipment ground must run together with the power wires. [4]
What Size Grounding Conductor on PV Panels?
- Australia rules - appear to say 6 ga for lightning protection, and 12 ga for frame grounding [5]
- 6 ga USA if 'subject to damage'?