Πώς να υπολογίσετε το Wire Sizing

Τι είναι το Wire Sizing;

Wire sizing selects conductor diameter to limit voltage drop and prevent overheating. Code requires ampacity matching and voltage drop limits.

Τύπος

VD

(2×K×I×L) / (1000×A) for DC or single-phase — (2×K×I×L) / (1000×A) for DC or single-phase

K

K value — Variable used in the calculation

I

I value — Variable used in the calculation

L

L value — Variable used in the calculation

A

A value — Variable used in the calculation

DC

DC value — Variable used in the calculation

Οδηγός βήμα προς βήμα

1. 1Look up ampacity from tables at operating temperature
2. 2Calculate voltage drop: VD = (2×K×I×L) / (1000×A) for DC or single-phase
3. 3Select wire where VD <3% feeder, <5% combined

Worked Examples

Common Mistakes to Avoid

• ✕Using listed ampacity without derating for temperature or bundling
• ✕Neglecting voltage drop in long feeder runs

Frequently Asked Questions