---
title: "Cable Tray Fill Calc - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Built for electricians, cable-tray installers, and EEs who need a quick NEC 392 fill check on the deck - not a dashboard you log into.  WHAT IT DOES Computes total cable cross-section as a percentage "
---

# Cable Tray Fill Calc — United States
> NEC 392 · Ladder · Solid · 50%

![Cable Tray Fill Calc App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/8f/46/ed/8f46ed6d-0c95-fd1f-e66e-c25c351e9e63/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Shanghai Sheyuan Network Technology Co](https://apptail.io/developer/shanghai-sheyuan-network-technology-co-mkXe)
**Category:** Utilities
**Rating:** N/A (0 ratings)
**Price:** $4.99
**Bundle ID:** com.sy.CableTrayFillCalc
**Store:** Apple App Store
**Country:** United States
**Version:** 1.0.2 (released 2026-06-30)
**Original Release:** 2026-03-29
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6761246731)
**AppTail Page:** [https://apptail.io/app/cable-tray-fill-calc-AZhz/united-states](https://apptail.io/app/cable-tray-fill-calc-AZhz/united-states)

## Cable Tray Fill Calc Description
Built for electricians, cable-tray installers, and EEs who need a quick NEC 392 fill check on the deck - not a dashboard you log into.

WHAT IT DOES
Computes total cable cross-section as a percentage of tray area and compares against the NEC 392 maximum fill: 50% for ladder and wire-basket trays, 40% for solid-bottom and channel trays. Flags over-fill and shows how many more cables of the same type fit before the limit.

INPUTS
- Unit system: SAE (inches) or Metric (mm)
- Tray type: Ladder, Solid Bottom, Wire Basket, Channel
- Tray size: 9 imperial sizes / 9 metric sizes
- Cable type: AWG #14 to 4/0 (SAE) or 1.5 to 50 mm² (Metric)
- Cable count

RETURNS
- Tray area (sq in or sq mm)
- Total cable area (sq in or sq mm)
- Fill percentage
- Maximum allowed fill per NEC 392 (50% or 40% depending on tray type)
- Remaining capacity in number of cables
- Over-fill warning (red banner) when above the allowed percentage

WHY THIS APP, NOT THE FREE ONES
- Math is shown - tray area, total cable area, and the percentage all visible.
- NEC 392 fill limits applied automatically - pick the tray type and the cap follows.
- Works offline - basements, riser shafts, mid-deck rough-ins. Always available.
- No login. No ads. No telemetry. No subscription.

PRICING
$4.99. Pay once, own it. Lifetime access on iPhone, iPad, and Mac via Family Sharing.

NOT A SUBSTITUTE FOR
AHJ-stamped electrical drawings. Manufacturer cable-tray load tables. NEC 392 ampacity derating for closely-spaced multiconductor cables - this app handles cross-section fill only, not the temperature derate. Always cross-reference the engineer-stamped layout.

## Cable Tray Fill Calc Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/5f/91/e9/5f91e991-2855-e5e9-d052-1be4bf299135/screenshot_iphone_1.jpg/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/39/fb/3c/39fb3cf9-284c-1512-54e5-a3ad3d6d0736/screenshot_iphone_2.jpg/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/2b/e3/85/2be385c3-53eb-d7c4-4133-af0cae91ee2a/screenshot_iphone_3.jpg/1284x2778.png)







## Cable Tray Fill Calc Available In
- [Argentina](https://apptail.io/app/cable-tray-fill-calc-AZhz/argentina)
- [Brazil](https://apptail.io/app/cable-tray-fill-calc-AZhz/brazil)
- [Belarus](https://apptail.io/app/cable-tray-fill-calc-AZhz/belarus)
- [Hungary](https://apptail.io/app/cable-tray-fill-calc-AZhz/hungary)
- [Italy](https://apptail.io/app/cable-tray-fill-calc-AZhz/italy)
- [Jordan](https://apptail.io/app/cable-tray-fill-calc-AZhz/jordan)
- [Norway](https://apptail.io/app/cable-tray-fill-calc-AZhz/norway)
- [United States](https://apptail.io/app/cable-tray-fill-calc-AZhz/united-states)

---

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