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API · /awg-api

Wire Gauge (AWG) API

healthy 3,499 Subscribers

American Wire Gauge maths as an API, computed locally and deterministically from the AWG definition. The awg endpoint takes a gauge — an integer, or 0/00/000/0000 (1/0–4/0) — and returns the conductor diameter (millimetres, inches, mils), the cross-section area (mm², kcmil and circular mils), the DC resistance per kilometre and per 1000 feet for copper and aluminium, and a typical ampacity. The convert endpoint finds the nearest standard AWG for a given cross-section area, diameter or kcmil, and also reports the exact non-integer gauge. The voltage-drop endpoint computes the round-trip voltage drop and power loss for a wiring run from the gauge (or area), length, current and conductor material, with the percentage drop and the voltage left at the load. Everything is computed locally and deterministically, so it is instant and private. Resistances are at 20°C; ampacity figures are typical guidance only — real installations are governed by the NEC/IEC tables for the conductor, insulation and conditions. Ideal for electrical and electronics tools, maker and hobby projects, solar and automotive wiring, and AV and installation planning. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is wire-gauge physics; for Ohm's-law voltage/current/resistance use an electronics API and for resistor colour bands use a resistor API.

#awg #wire-gauge #electrical #voltage-drop #ampacity #developer-tools
api.oanor.com/awg-api
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Machine-readable spec so AI agents can integrate this API.

/api/awg-api/openapi.json
/api/awg-api/llms.txt

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Wire Gauge (AWG) API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
73 ms
Server probes · 24h
Subscribers
3,499
active
Total calls
76
last 7 days
status Full status page → · 12 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 10,535 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 10,535 calls/month
  • 2 req/sec
  • AWG + convert + voltage drop
  • No credit card
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Starter

€12.05 /month

  • 20,150 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 20.15k calls/month
  • 8 req/sec
  • Copper & aluminium, kcmil
  • Email support
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Pro

€31.95 /month

  • 251,500 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 251.5k calls/month
  • 20 req/sec
  • Electrical / install pipelines
  • Priority support
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Mega

€69.95 /month

  • 1,300,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.3M calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
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Wire Gauge API — oanor API marketplace

Wire Gauge API

AWG (American Wire Gauge) maths as an API, computed locally and deterministically. The awg endpoint returns the physical properties of a gauge — the diameter, 0.127·92^((36−n)/39) mm, the cross-section area, the DC resistance per kilometre and per 1000 ft for copper or aluminium, and the Preece fusing current (the point at which the wire melts, far above any safe operating ampacity). The fromdiameter endpoint goes the other way, giving the nearest AWG for a measured diameter or cross-section area, n = 36 − 39·log₉₂(d/0.127). The resistance endpoint gives the resistance of a wire run from its gauge, length and material, R = ρ·L/A. Gauges 0/0 (1/0), 00 (2/0) and 000 (3/0) are entered as −1, −2 and −3. Everything is computed locally and deterministically, so it is instant and private. Ideal for electronics, electrical and maker app developers, wiring and cable-selection tools, and engineering education. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is wire-gauge geometry and resistance; for cable voltage drop over a circuit use a voltage-drop API.

api.oanor.com/wiregauge-api

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Sauna Heater API

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api.oanor.com/saunaheater-api

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Cable Tray Fill API

Cable-tray fill engineering maths as an API, computed locally and deterministically from NEC Article 392 — the allowable-fill, single-layer and tray-width numbers an electrician, estimator or designer runs for a tray run. The fill endpoint applies NEC 392.22(A)(1) Column 1 for multiconductor power and lighting cables no larger than 4/0 in a ladder or ventilated-bottom tray: the total cable cross-sectional area is capped at the tray width × 7/6, so a 12-inch tray allows 14 in² — sum every cable's csa, get the percentage fill and whether it is within code, with the spare area left. The large-cable endpoint covers cables 4/0 and larger, which must lie in a single layer with the sum of their diameters not exceeding the tray width — no stacking — so it returns the spare width and the code check. The min-width endpoint inverts the rule to size the tray: minimum width = cable area × 6/7, rounded up to a standard 6/9/12/18/24/30/36-inch width, leaving room for spare capacity and future cables. Everything is computed locally and deterministically, so it is instant and private. Ideal for electrical-design and estimating tools, industrial and OSP utilities, and code-check calculators. Pure local computation — no key, no third-party service, instant. Ladder/ventilated trays; solid-bottom and mixed fills use the other NEC columns, and ampacity must be derated for fill. 3 compute endpoints. For conduit and box fill use a conduit API.

api.oanor.com/cabletray-api

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Electric Motor FLA API

Electric-motor electrical maths as an API, computed locally and deterministically — the full-load-current, NEC-sizing and starting-current numbers an electrician, panel designer or estimator runs for every motor circuit. The full-load-amps endpoint gives the motor current from its power, voltage and phase: FLA = (output ÷ efficiency) ÷ (√3 × volts × power factor) for three-phase (drop the √3 for single-phase) — a 10 hp, 460 V, three-phase motor at 90 % efficiency and 0.85 power factor draws about 12.2 A — and it also returns the input kW and kVA. The sizing endpoint applies NEC Article 430 from the full-load current: branch-circuit conductors at 125 %, overload protection at 115–125 % by service factor, and branch-circuit short-circuit/ground-fault protection up to 250 % for an inverse-time breaker or 175 % for a time-delay fuse — the larger protection lets the inrush pass while the overload guards the windings. The starting endpoint gives the locked-rotor (inrush) current, about six times full-load for an across-the-line start, the figure that sets the voltage dip and why soft starters and VFDs exist. Everything is computed locally and deterministically, so it is instant and private. Ideal for electrical-design and estimating tools, panel-builder and field utilities, and engineering calculators. Pure local computation — no key, no third-party service, instant. Calculated values — use the NEC FLC tables for code work. 3 compute endpoints. For general three-phase power use a three-phase API; for conduit fill a conduit API.

api.oanor.com/motorfla-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Wire Gauge (AWG) API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Wire Gauge (AWG) API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Wire Gauge (AWG) API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Wire Gauge (AWG) API cost?
Wire Gauge (AWG) API has a free tier with 100 calls / month. Paid plans start at €12.05 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Wire Gauge (AWG) API GDPR-compliant?
All requests to Wire Gauge (AWG) API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/awg-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/awg-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/awg-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/awg-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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