Empire Code — Mobile

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Empire Code AI

NEC & NYCEC 2025 field assistant

310.16 Base ampacity · Temp correction · CCC adjustment

110.14(C) Terminal Limit — use 75°C column for final ampacity

Wire Size

Insulation

Material

Ambient Temp

CCC (Bundling)

Rooftop Conduit

AMPACITY — NEC 310.15

NEC TABLE 310.16

Copper

Aluminum

Wire	60°C	75°C	90°C	Typical Use	Max Breaker

TEMP CORRECTION — NEC 310.15(B)(1)

Ambient	60°C	75°C	90°C

NEC Ch.9 53% (1 wire) · 31% (2 wires) · 40% (3+ wires)

NYCEC 334.12 EMT required · No Romex in commercial/multifamily

Conduit Type

Conduit Size

Wire Type

Wire Size

# Wires

CALCULATION RESULT

MAX CONDUCTORS (40% FILL)

EMT

IMC

RMC

ENT

PVC40

PVC80

NEC 210.19 3% branch · 5% feeder+branch total

NYCEC 215.2 Commercial: 3% feeder · Residential: 4% feeder

Load (Amps)

One-Way Distance (ft)

System Voltage

Phase

Conductor

Max VD %

VOLTAGE DROP CALCULATION

WIRE SIZE COMPARISON

Wire Size	CM Area	VD	Drop %	V at Load	Status

NEC 314.16 Volume per conductor by AWG · Devices = 2× largest

Box Type

Wire Size (largest)

# Conductors

# Devices

Internal Clamps

EGC

Extension Ring

BOX FILL — NEC 314.16

CONDUCTOR VOLUME — NEC 314.16(B)

Wire	Vol/Cond	Device (×2)	Clamp/EGC (×1)

BOX VOLUME — NEC 314.16(A)

Box Type	Vol (in³)	#14 max	#12 max	#10 max

310.15 + 210.19 Ampacity after derating AND V-Drop — both conditions

BOTH Wire must pass derating AND voltage drop simultaneously

NYCEC 215.2 Commercial: 3% feeder · Residential: 4% feeder · 5% total — legal requirement