Cabling And Wiring; Electrical Safety; Cable Considerations For Fixed Installations; Impedance Graph - Void Nexus Q User Manual

4 Cable and Wiring

4.1 Electrical safety

To avoid electrical hazards please note the following:
• Do not access the inside of any electrical equipment. Refer servicing to
Void-approved service agents.

4.2 Cable considerations for fixed installations

We recommend specifying installation-grade Low Smoke Zero Halogen (LSZH) cables for
permanent installations. The cables should use Oxygen Free Copper (OFC) of grade C11000
or above. Cables for permanent installations should be compliant with the following standards:
• IEC 60332.1 Fire retardancy of a single cable
• IEC 60332.3C Fire retardancy of bunched cables
• IEC 60754.1 Amount of Halogen Gas Emissions
• IEC 60754.2 Degree of acidity of released gases
• IEC 61034.2 Measurement of smoke density.
We suggest using the following maximum copper cable lengths to keep level losses below 0.6 dB.
Metric mm
2
2.50 mm
2
4.00 mm 2

4.3 Impedance graph

25
20
15
10
5
10 20
UG10576-2.0 - Nexus Q User Guide V2.0
Imperial AWG
13 AWG
11 AWG
50 100 200
Frequency (Hz)
Figure 4.1: Impedance graph
4 Ω load
18 m
30 m
500 1k 2k 5k
2 Ω load
9 m
15 m
10k 20k
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