learn.howToCalculate
learn.whatIsHeading
Wire sizing selects conductor diameter to limit voltage drop and prevent overheating. Code requires ampacity matching and voltage drop limits.
ସୂତ୍ର
Calculate voltage drop: VD = (2×K×I×L) / (1000×A) for DC or single-phase
- 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
ଷ୍ଟେପ୍-ଷ୍ଟେପ୍ ଗାଇଡ୍ |
- 1Look up ampacity from tables at operating temperature
- 2Calculate voltage drop: VD = (2×K×I×L) / (1000×A) for DC or single-phase
- 3Select wire where VD <3% feeder, <5% combined
ସମାଧାନ ହୋଇଥିବା ଉଦାହରଣ
ଇନପୁଟ୍
I = 100 A, L = 50 m, copper wire, assume 60°C ampacity table
ଫଳ
AWG 6 (106 A) with ~3.1% drop, marginal
AWG 4 better choice
ଏଡ଼ାଇବା ଯୋଗ୍ୟ ସାଧାରଣ ଭୁଲ
- ✕Using listed ampacity without derating for temperature or bundling
- ✕Neglecting voltage drop in long feeder runs
ବାରମ୍ବାର ଜିଜ୍ଞାସା
Why limit voltage drop?
Excessive drop reduces equipment performance, efficiency, and motor starting capability.
How does temperature affect wire sizing?
Higher temperature reduces ampacity; must derate if ambient >30°C.
learn.ctaText
ଏହାକୁ ନିଜେ ଚେଷ୍ଟା କରନ୍ତୁ →