La Marche ULTRA SERIES, Инструкция по установке и эксплуатации, Страница: 8 / 16

8
3.3 Power Cabling Guide
Use the following formulas and tables to determine proper wire size for minimal voltage drop.
Table of Conventions
CMA = Cross section of wire in circular MIL area
A = Ultimate drain in amperes
LF = Conductor loop feet
MaxAmp = Maximum allowable amperes for given voltage drop
AVD
= Allowable voltage drop
K = 11.1 for commercial (TW) copper wire (KS5482-01)
= 7.4 for aluminum (KS20189)
Calculating Wire Size Requirements Calculating Current Carrying Capacity of Wire
AVD
K LF A
CMA
 

K LF
AVD CMA
MaxAmp



Note: AC wiring terminals can accept wire up to 12 AWG;
DC wiring terminals can accept wire up to 10 AWG;
Alarm wiring terminals can accept wire up to 16 AWG.
SIZE
(AWG)
AREA
CIR.MILS
SIZE
(AWG)
AREA
CIR.MILS
18 1620 6 26240
16 2580 4 41740
14 4110 3 52620
12 6530 2 66360
10 10380 1 83690
8 16510 0 105600
Table 2 – Recommended wire size Table
Table 3 - Wire Size/Area Table
DC Wire size requirements
Output
Current Rating
Recommended
wire size (AWG)
10A #14
20A #12
30A #10
40A #8