Hukseflux VU01, User Manual, Page: 16 / 25

VU01 manual v1614 16/25
The table below shows the voltage drop for several cable lengths and AWG (American
wire gauge). Different AWG wires differ in wire diameter and electrical resistance. The
table may be used to estimate the right type of wiring for installations using up to 50
metres of cable; i.e. 100 m of internal wire. Check your cable distributor for actual
resistance values. Acceptable voltage drops, when using a 12 VDC power supply, are
indicated by grey shading.
Table 5.5.2 Voltage drop for different cable lengths and AWG wires. Wires length is 2
times cable length. Resistance values are retrieved from ASTM B258-14.
AWG 26 AWG24 AWG 22 AWG 20 AWG 18 AWG 16 AWG 14
Cable
length
U
drop
U
drop
U
drop
U
drop
U
drop
U
drop
U
drop
[m] [V] [V] [V] [V] [V] [V] [V]
1 0.2 0.1 0.1 0.0 0.0 0.0 0.0
5 1 0.5 0.3 0.2 0.1 0.1 0.1
10 1.1 0.7 0.4 0.3 0.2 0.1
15 1.0 0.6 0.4 0.3 0.2
20 0.9 0.5 0.3 0.2
30 0.8 0.5 0.3
40 0.7 0.4
50 0.9 0.5
Examples: For a cable length of 50 metres, the resistance of AWG16 is low enough to
deliver 11.1 V to VU01 when using a 12 VDC power supply. For a cable length of 15
metres, AWG 26 and AWG 24 cabling should not be used because the voltage drop
prohibits VU01 from receiving a sufficient amount of power.
Warning: Voltage supply to VU01 must be between 10.8 and 13.2 VDC, higher voltages
may cause damage to the fan. The voltage supplied to VU01 should be measured when
VU01 is connected.
Combinations of different cable lengths, AWG sizes and voltage supply are also possible,
but have to be calculated for each case.
Standard VU01 is delivered with a cable length of 5 m. Longer cable lengths, in multiples
of 5 metres, are offered by Hukseflux. Please consult Hukseflux.