While a separate grounding electrode system is still permitted to be installed for a PV array, per 690.47 (B), it is no longer required to be bonded to the premises grounding electrode system.
A ground mount array needs its own ground rod and the ground mount rack itself, and any metal boxes, etc. (not your electronics) needs to be grounded to that rod.
The specific bonding and grounding requirements for PV systems in Article 690 are in Part V. Section 690.41 covers system grounding, allowing both grounded and ungrounded PV array conductors.
All PV equipment must be grounded per NEC 250.4 (A) (2), but the electrical system itself can be either grounded or ungrounded. Most modern PV systems in the United States use ungrounded configurations with
Grounding is a safety issue during the entire lifetime of a PV system, because modules can produce potentially dangerous currents and volt-ages even if the system is no longer fully functional.
A key change is in NEC 690.43 (C), which now explicitly states that equipment grounding conductors are permitted to be run separately from the PV system conductors *within* the PV array.
The installation method of the photovoltaic brackets can also affect the grounding requirements. You should use a mounting system that is designed to provide a good electrical connection between the brackets and the
Always use grounding lugs, clips, and other components that are specifically listed and certified for PV applications. These parts are designed to penetrate anodized coatings on module frames and
An equip- ment grounding conductor of the wire type for a dc circuit can be run separately from the circuit conductors when it is within the array [250.134 Ex 2].
The concept and purpose of grounding in DC systems, such as solar panels and photovoltaic arrays, are the same as in AC systems. However, the grounding process and methods differ slightly, offering multiple
PEES Power Systems is a leading provider of advanced energy solutions in South Africa and Africa. We specialize in microgrid systems, solar photovoltaic (PV) power generation, BESS (battery energy storage systems), grid‑tied / hybrid / off‑grid inverters, PCS power conversion systems, EMS energy management systems, BMS battery management systems, lithium‑ion & LiFePO4 batteries, and modular energy storage systems. Our portfolio also includes energy storage containers, energy storage cabinets, containerised power stations, off‑grid power supply systems, backup emergency power, clean energy solutions, new energy storage systems, and green power systems. We offer battery cabinets with integrated BMS, outdoor all‑in‑one storage cabinets, commercial & industrial storage, communication battery cabinets, server racks, and transformer capacity expansion services. Whether you need a small off‑grid system or a zero‑carbon factory solution, our products deliver reliability and performance.
Our modular energy storage solutions range from 20ft/40ft mobile containers to outdoor all‑in‑one energy storage cabinets. We are a leading manufacturer of battery cabinets with BMS, offering communication battery cabinets for telecom, server racks for data centers, and energy storage battery BMS systems. We utilize lithium‑ion energy storage batteries and LiFePO4 batteries for optimal safety and lifecycle. Our stackable design allows flexible capacity expansion, while our grid‑forming technology ensures stable microgrid operation. Whether for distributed PV systems, off‑grid power supply, backup emergency power, or large zero‑carbon parks, our products feature advanced thermal management, PCS and EMS integration, and compliance with South African and international standards. We also provide professional energy storage system installation and after‑sales support, and we help clients navigate energy storage subsidies where applicable.