Cable sizing governed by ampacity and voltage drop.
48 × 1 × 6 mm² · 0 × 1 × 10 mm²
We are not just sketching,
Engineering.
Horizon will never cost you thousands of euros a year. ↗
Every contour. Every row. Every connection.
Horizon Design brings terrain, layout and electrical engineering into one utility-scale solar workflow.
02 — FIXED-TILT ARRAY LAYOUT
ILLUSTRATIVE ENGINEERING VIEW
┼
0 string voltage failures shown.
Voltage basis still requires verification.
| STRING | MODULES | L+ / m | L− / m | LOOP / m | CABLE | CABLE CHECK | VOLTAGE BASIS |
|---|---|---|---|---|---|---|---|
| String 1-3 | 28 | 75.239 | 76.383 | 151.622 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-4 | 26 | 5.917 | 7.061 | 12.978 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-5 | 28 | 37.575 | 38.719 | 76.294 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-6 | 28 | 69.233 | 70.377 | 139.610 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-7 | 28 | 6.023 | 7.167 | 13.190 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
Why separate cable sizing from string voltage?
A cable-sizing pass and a string-voltage assessment answer different engineering questions. In this supplied example, cable sizing passes while the voltage design remains incomplete. Zero reported voltage failures does not make an incomplete assessment complete.
Design basis & references
References visible in the supplied example include IEC 60364-5-52 for current-carrying capacity and voltage drop, and IEC 60287-1-1 for cable current rating and resistance calculations.
The reference list is shown as part of the product example; this presentation does not independently certify compliance.
From individual string checks to a quantified cable BOQ.
Download example CSV ↓A layout is only the beginning.
The numbers must stand up.
Cable sizing. Voltage drop. Material quantities. Separate checks, visible results and a clear design basis. This is what “We are engineering.” looks like.
Cable sizing governed by ampacity and voltage drop.
48 × 1 × 6 mm² · 0 × 1 × 10 mm²
0 string voltage failures shown.
Voltage basis still requires verification.
| STRING | MODULES | L+ / m | L− / m | LOOP / m | CABLE | CABLE CHECK | VOLTAGE BASIS |
|---|---|---|---|---|---|---|---|
| String 1-3 | 28 | 75.239 | 76.383 | 151.622 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-4 | 26 | 5.917 | 7.061 | 12.978 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-5 | 28 | 37.575 | 38.719 | 76.294 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-6 | 28 | 69.233 | 70.377 | 139.610 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
| String 1-7 | 28 | 6.023 | 7.167 | 13.190 | 1 × 6 mm² | ✓ PASS | VERIFY BASIS |
Why separate cable sizing from string voltage?
A cable-sizing pass and a string-voltage assessment answer different engineering questions. In this supplied example, cable sizing passes while the voltage design remains incomplete. Zero reported voltage failures does not make an incomplete assessment complete.
Design basis & references
References visible in the supplied example include IEC 60364-5-52 for current-carrying capacity and voltage drop, and IEC 60287-1-1 for cable current rating and resistance calculations.
The reference list is shown as part of the product example; this presentation does not independently certify compliance.
From individual string checks to a quantified cable BOQ.
Download example CSV ↓Adapted from the supplied Horizon screen. Selected rows shown. This is a product example, not a live calculation.
From complex terrain.
To considered design.
Solar engineering starts with the land. Keep the physical site, the array and the electrical design connected from the first decision to the final deliverable.
Work with the land.
Bring terrain into the design conversation. Understand contours, site boundaries and slope before committing to an array layout.
Give every row a reason.
Develop fixed-tilt utility-scale layouts with the site in view. Consider row spacing, orientation and access as part of one coherent design.
Close the engineering loop.
Connect layout decisions to electrical engineering and carry the design into bills of materials and DXF deliverables.
Engineering depth.
Beyond the layout.
Structured inputs. Traceable results. Linked references. Explore the electrical and civil calculation tools behind Horizon’s engineering workflow.
Electrical calculators
FROM CABLE SIZING TO GROUNDINGDC Cable Sizing & Voltage Drop
PV DC voltage rating, ampacity, voltage drop and maximum route length.
AC Cable Sizing & Voltage Drop
Three-phase LV cable current, R/X voltage drop, formation-aware ampacity and losses.
MV Cable Sizing & Voltage Drop
MV cable loading, flat/trefoil formation, voltage drop and short-circuit checks.
Earthing / Grounding
Ground current, conductor sizing, earth resistance, GPR, touch and step voltage checks.
Short-Circuit Calculation
System short-circuit current and equipment withstand verification.
Transformer Sizing
Transformer loading, redundancy, losses and preliminary rating selection.
PV String & Inverter Sizing
String length, MPPT window, inverter DC loading and operating-envelope checks.
CCTV
Camera coverage, placement and surveillance planning for utility-scale solar sites.
Civil calculators
FROM FOUNDATIONS TO SITE ROADSSubstation / Central Inverter Foundation & Slab
Slab, pedestal, blinding, aggregate, formwork and reinforcement quantities.
Drilled Columns — Drilling & Concrete Quantity
Drilling length, bore volume and concrete quantities by diameter, table and concrete class.
Cable Trench
Trench excavation, bedding, warning layer, backfill and route quantities.
Equipment Foundation
Foundation geometry, excavation, lean concrete, structural concrete and formwork quantities.
Internal Perimeter Road
Road earthworks, pavement layers, aggregate mass and geotextile quantities.
Internal Service Road
Service-road earthworks, pavement layers, aggregate mass and geotextile quantities.
Excavation & Fill
Bulk excavation, fill, swell/shrink and haul quantity calculations.
Concrete Quantity
Concrete volume calculation by structural element and concrete class.
Reinforcement Quantity
Rebar quantity, unit weight, laps, wastage and bar schedule support.
Drainage
Preliminary ditch, culvert and drainage quantity calculations.
Calculators are presented here as product features.
One project.
A clear path forward.
Keep your engineering intent intact as the project moves from site geometry to technical outputs.
Start with the real site.
Establish the terrain and the boundaries that guide the design.
Develop the solar field.
Bring fixed-tilt rows and electrical design into the same workflow.
Take engineering beyond the screen.
Move from a considered layout to BOM and DXF outputs.
Great solar projects
start with better decisions.
Explore the engineering approach behind Horizon Design.
Forever Update: “Horizon will never cost you thousands of euros a year.”