ECS Series Manual —
P/N LS10262-001FK-E:A 3/3/2021
51
Installing the FIK-DUAL50W
Device Installation
Wiring Lengths
Class B Speaker Configuration for FIK-DUAL50W
Figure 4.46 illustrates how to wire speakers to the control panel using Class B supervision.
Figure 4.46 Class B Speaker Configuration
Number Of Speakers
Total Load
Wire Distance in Feet
@1/2 W
@1 W
Vrms
Watts
18 AWG
16 AWG
14 AWG
12 AWG
10
5
25Vrms
5W
3900
6200
9860
15680
70Vrms
25000
39700
63200
100520
20
10
25Vrms
10W
2125
3380
5375
8540
70Vrms
15200
24150
38400
61100
30
15
25Vrms
15W
1460
2320
3690
5870
70Vrms
11000
17500
27800
44200
40
20
25Vrms
20W
1100
1750
2780
4420
70Vrms
8500
13510
21500
34175
52
26
25Vrms
26W
760
1200
1920
3050
70Vrms
6100
9700
15400
24520
80
40
25Vrms
40W
550
875
1390
2200
70Vrms
4100
6500
10360
16480
100
50
25Vrms
50W
450
715
1130
1800
70Vrms
3500
5560
8850
14070
Table 4.5 Wire Lengths
NOTE:
The above table assumes a uniform distribution of the speakers, and that a max of 20% voltage drop on the last speaker is allowed
15k
Ω
EOL
Supervised
power limited