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ZC1-8B Connections and Ratings
Electrical connections:
All wiring must be in accordance with
Article 760 of NEC or the local building
codes.
Some signal is lost in the zone wires
due to line resistance. Refer to the
tables below to determine the decibel
loss for various wire gauges and
lengths. A reduction in load reduces
the loss. Use the largest wire size
possible for the smallest loss.
SPEAKER ZONE DECIBEL LOSS
for 70.7V RMS, 25W load
Length
Gauge
16 AWG 18 AWG
(feet) (loss in decibels)
200 0.04 0.06
400 0.07 0.11
600 0.11 0.17
800 0.14 0.22
1000 0.18 0.27
SPEAKER ZONE DECIBEL LOSS
for 25.2V RMS, 35W load
Length
Gauge
14 AWG 16 AWG 18 AWG
(feet) (loss in decibels)
200 0.2 0.3 0.6
400 0.5 0.7 1.1
600 0.7 1.1 1.6
800 0.9 1.5 2.2
1000 1.2 1.8 2.7
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