NYAF Cable in PV Systems: Flexible Control Wiring Beyond the Array
NYFAAF is a fine-wire flexible control cable ( — gnicommonly referenced under IEC 60227, e.g. 60227 IEC 06) used for equipment and control-circuit wiring — not a photovoltaic DC cable. In a PV system it belongs in the balance of sys)SOB( mettem (BOS): combiner-box and inverter internal wiring, control/signal loops and auxiliary circuits. It must not replace the PV DC main cable (PV1-F / H1Z2Z2-K / IEC 62930), which carries the string current across the array.
About this guide. HuaCable's export focus is copper-conductor PV DC cable (PV1-F / H1Z2Z2-K / IEC 62930) plus MC4 connectors. For flexible control wiring such as NYAF-type cable, tell us your specification. We do not claim UL / ROHS / VDE for the PV DC models. This page explains NYAF's correct role so it is not mistaken for array cabling.
NYAF Meaning, in Plain Terms
Letter | Meaning |
|---|---|
N | European-style cable designation |
Y | PVC insulation |
A | Fine-strand (flexible) conductor |
F | Flexible construction |
So NYAF is a flexible PVC-insulated cable with a finely stranded conductor — built for repeated handling, tight bends and vibration, exactly what you want inside equipment and control panels.
Where NYAF Fits in a PV System (BOS)
Combiner box internal wiring — string fuses, busbars, monitoring modules.
Inverter internal / auxiliary wiring — control boards, fans, contactors.
Control & signal loops — plant monitoring, sensors, communication.
Building / enclosure wiring near the plant (controller cabinets, RTU).
None of these carry the outdoor string current — that stays on the PV DC cable.
NYAF vs the PV DC Main Cable
Aspect | NYAF (control) | PV1-F / H1Z2Z2-K (array DC) |
|---|---|---|
Role | Equipment / control wiring | Module-to-inverter DC current |
Insulation | PVC (general flexible) | Crosslinked XLPE/XLPO, double layer |
Outdoor UV/ozone | Not rated for array exposure | Rated for 25-year outdoor duty |
Standard | IEC 60227 family (control) | 2 PfG 1169 / EN 50618 / IEC 62930 (PV) |
Use on array | No — wrong cable | Yes — correct cable |
🔴 Do not substitute. Using NYAF on the DC array would put a non-PV, non-crosslinked, non-UV-rated cable in the current path — a safety and lifespan failure. Keep NYAF in the BOS; keep PV1-F / H1Z2Z2-K on the string.
Why the Distinction Matters for Specifiers
Procurement teams sometimes see "flexible solar cable" and assume one flexible cable covers everything. It does not. The array needs a certified PV DC cable; the BOS needs a flexible control cable. Mixing them up causes inspection failures and premature faults. Define both clearly in the BoM:
DC array: PV1-F (TÜV 2 PfG 1169) or H1Z2Z2-K (TÜV + CE), single-core, crosslinked double insulation.
BOS control: NYAF-type flexible cable for internal/auxiliary wiring, per the equipment's own wiring spec.
FAQ
What does NYAF cable mean?
NYAF is a fine-wire flexible cable (commonly referenced under IEC 60227, e.g. 60227 IEC 06) used for internal wiring of equipment and control circuits. The 'N' indicates a European-style designation, 'Y' is PVC insulation, 'A' is fine-strand flexible conductor, and 'F' is flexible. It is a control/power wiring cable, not a photovoltaic DC cable.
Can NYAF replace PV1-F on the solar array?
No. NYAF is not a PV DC cable and must not replace PV1-F / H1Z2Z2-K on the module-to-inverter DC path. The DC array needs a crosslinked, UV/ozone-resistant, double-insulated PV cable certified to a PV standard. NYAF's role is flexible control and equipment wiring in the balance of system, not carrying string current in the field.
Where is NYAF used in a PV system?
NYAF fits the balance of system: internal wiring of combiner boxes and inverters, control and signal loops, sensor and auxiliary circuits, and panel/buildings wiring near the plant. It is chosen where frequent handling, tight bending or equipment vibration makes a flexible cable practical.
Does HuaCable supply NYAF cable?
HuaCable's export focus is copper-conductor PV DC cable (PV1-F / H1Z2Z2-K / IEC 62930) plus MC4 connectors. For control and equipment wiring such as NYAF-type flexible cables, tell us your specification and we will confirm the exact model and certification scope — we do not claim UL/ROHS/VDE for PV DC models.
Engineer's Conclusion
NYAF is a useful, flexible control cable for the PV plant's balance of system — but it is a different animal from the array's PV DC cable. Keep NYAF in combiner boxes, inverters and control loops, and keep PV1-F / H1Z2Z2-K / IEC 62930 on the string where crosslinked, UV-rated, double-insulated construction is mandatory. Right cable in the right place is what keeps both the BOS and the array reliable for 25 years.
Where to go next
What is NYAF cable (full explainer): read the guide.
PV1-F (TÜV 2 PfG 1169): selection guide.
H1Z2Z2-K (TÜV + CE, EN 50618): selection guide.
MC4 connector (CE): connector guide.
Author: Engineer Chan · HuaCable technical team
10 years in wire & cable manufacturing; PV system cabling experience.
NYAF descriptions are for specifying guidance; confirm the exact standard and certificate for your equipment wiring.
