Level 2 EVSE Continuous-Duty Conductor & Terminal Temperature Benchmark Dataset
Continuous-duty Joule heating (I²R), conductor temperature rise, and 60°C vs 75°C terminal temperature envelopes with NEC 625.42 as the continuous-load sizing reference.
1. Abstract & Dataset Scope
Provides a source-informed deterministic benchmark matrix modeling conductor Joule heating (I²R), voltage drop along a 50ft branch circuit, and terminal lug temperature rise across continuous-duty residential Level 2 EVSE charging loads (16A to 80A). Evaluates steady-state thermal behavior against 60°C vs 75°C termination temperature limits referencing NFPA 70 (NEC Article 625.42 and 110.14(C)).
2. Technical Methodology & Benchmark Formulation
Deterministic thermal modeling based on standard DC conductor resistance values (NEC Chapter 9 Table 8), I²R Joule heating power dissipation, and lumped-parameter thermal resistance models across continuous-duty (100% duty cycle for 3+ hours) branch circuits. Values represent standardized engineering calculations rather than certified laboratory test data for specific manufacturer equipment.
3. Data Dictionary & Variable Definitions
| Variable Name | Symbol | Unit | Type | Description | Example |
|---|---|---|---|---|---|
| Continuous Current | I_cont | Amperes (A) | Float | Steady-state charging current drawn by EV onboard charger | 48 |
| Breaker Rating Required | I_ocpd | Amperes (A) | Integer | Minimum allowable overcurrent protective device rating (125% continuous rule) | 60 |
| Conductor Gauge | AWG | AWG / kcmil | String | Insulated copper conductor size | 6 AWG |
| Conductor Material | Mat | Material Type | String | Conductor metal classification (Copper) | Copper |
| Terminal Temperature Rating | T_rating | Temperature Class | String | Equipment and breaker terminal temperature rating (60°C vs 75°C) | 75C THHN |
| Terminal Temperature | T_term | °C | Float | Modeled steady-state temperature at circuit breaker termination lug | 68.4 |
| Voltage Drop % (50ft) | V_drop_pct | % of 240V | Float | Percentage voltage drop along 50-foot branch circuit run | 0.98 |
| Total Power Dissipation | P_loss | Watts (W) | Float | Total Joule heating power dissipated along 50ft circuit run | 113.1 |
| NEC Sizing Check | NEC_check | Evaluation | String | Modeled verification status against continuous load ampacity limits | YES |
4. Sample Data Records Preview
Displaying 6 representative rows (Full dataset contains 7 Records)| charging current a | breaker rating a | conductor gauge | conductor material | terminal temp rating | terminal temp c | voltage drop pct 50ft | power loss w 50ft | nec compliant |
|---|---|---|---|---|---|---|---|---|
| 16 | 20 | 12 AWG | Copper | 60C/75C | 41.2 | 1.32 | 24.8 | YES |
| 24 | 30 | 10 AWG | Copper | 60C/75C | 48.6 | 1.25 | 39.5 | YES |
| 32 | 40 | 8 AWG | Copper | 60C/75C | 56.1 | 1.05 | 62.4 | YES |
| 40 | 50 | 8 AWG | Copper | 75C THHN | 67.8 | 1.31 | 97.5 | YES |
| 48 | 60 | 6 AWG | Copper | 75C THHN | 68.4 | 0.98 | 113.1 | YES |
| 80 | 100 | 3 AWG | Copper | 75C THHN | 72.1 | 0.85 | 198.6 | YES |
5. Limitations & Engineering Disclaimer
This dataset provides deterministic engineering calculations and benchmark scenarios. It is not certified laboratory test data, does not constitute NFPA 70 (NEC) compliance certification or electrical inspection approval, and does not replace manufacturer installation instructions, AHJ requirements, or professional electrical engineering design.
6. Dataset Citation (BibTeX / APA / IEEE)
When referencing this dataset in academic preprints, technical reports, or computational tooling, please cite using the formal reference metadata below:
APA Style
IEEE Style
BibTeX Record
@dataset{powerlab_2026_evse_dataset,
author = {Miad S. and {PowerLab Clean Energy Engineering Group}},
title = {Level 2 EVSE Continuous-Duty Conductor & Terminal Temperature Benchmark Dataset},
year = {2026},
publisher = {Figshare},
version = {1.2.0},
doi = {10.6084/m9.figshare.33321774},
url = {https://www.powelab.org/datasets/continuous-duty-evse-terminal-temperature-benchmark}
}