Delta MCS-1800 Specifications Page 62

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NEW!
POWER MONITORING & PROTECTION
972
NEW!
POWER MONITORING & PROTECTION
16
WHEN YOU NEED IT RIGHT, RIGHT NOW, CALL KELE.
kele.com888-397-5353 USA
POWER EQUATIONS
A
C
B
120(240)(480)
120(240)(480)
120(240)(480)
Three-phase Three-wire
POLYPHASE (VAC)
SINGLE-PHASE (VAC)
A
C
B
208(416)
240(480)
120(240)
Three-phase Four-wire Delta
120(240)
240(480)
120(277)
120(277)
120(277)
208(480)
208(480)
208(480)
Three-phase Four-wire Wye
C
B
A
N
N
A
120(240)(480)
Two-wire
N
Ground
Line
A
120(240)
Three-wire
N
Ground
Line
120(240)
B
240(480)
Line
= amps x (length of circuit in ft) x 2* x (ohms per 1000 ft)
1000
= I x L x 2* x R
* Change to 1.73 for three-phase
SINGLE-PHASE VOLTAGE DROP
ΔV
Δ
V
Wire Size AWG ohms/1000 ft (@ 77°F)
(Stranded)
24 25.67
22 16.46
20 10.35
18 6.512
16 4.095
14 2.576
12 1.620
March 2014
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