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Calculating the System Current Draw
Table 7.3 contains three columns for calculating current draws. For maximum output current availability per circuit and per panel, refer
to Section 1.2, "Specifications", on page 13. For each column, calculate the current and enter the total (in amperes) in the bottom row.
When finished, copy the totals from Calculation Column 2 and Calculation Column 3 to Table 7.4 on page 102.
Device Type
Main Circuit
Board
GF505
or
GF510
CAC-5X
4XTMF
ANN-SEC card
GFANN-80
GFANN-RLY
GFANN-(R)LED
2-wire Detector
Heads
4-wire Detector
Heads
Power
Supervision
5
Relays
NAC #1
NAC #2
NAC #3
NAC #4
Current Draw
from TB9
(nonalarm)
Sum each
6
column
for
totals
1
If using the Reverse Polarity Alarm output, add 0.005 amps; if using the Reverse Polarity Trouble output, add another 0.005 amps.
2
The current draw shown represents one zone (IDC) on the main circuit board in alarm. One zone consumes 0.040 amps.
3
Refer to the Device Compatibility Document for standby current.
4
Enter the number of IDCs used minus one.
5
Must use compatible listed Power Supervision Relay.
6
Total current draw listed above cannot exceed 7.25 for the GF505 and 7.28 for the GF510.
GF505 & GF510 Manual — P/N 53164:B5 6/12/2018
Calculation Column 1
Primary, Non-Fire Alarm Current
(amps)
X[current
Qty
draw]=
1
X[0.110]=
[
]
X[0.001]=
[
]
X[0.005]=
1 max.
[
]
X[0.003]=
1 max.
[
]
X[0.037]=
[
]
X[0.015]=
[
]
X[0.028]=
3
[
]
X[
]
=
3
[
]
X[
]
=
[
]
X[0.025]=
[
]=
Primary Non-Alarm =
Table 7.3 System Current Draw Calculations
Calculation Column 2
Secondary, Fire Alarm Current
(amps)
X [current draw]
Total
Qty
=
1, 2
1
X[0.214]
[
]
X[0.001]=
1
[
]
X[0.011]
1 max.
[
]
X[0.003]=
1 max.
[
]
X[0.040]=
[
]
X[0.075]=
[
]
X[0.068]=
4
[
]
X[0.040]=
4
[
]
X[0.040]=
[
]
X[0.025]=
[
]
X[
]=
[
]
X[
]=
[
]=
Secondary Alarm =
Power Supply Calculations
Calculation Column 3
Secondary, Non-Fire Alarm
Current
(amps)
X[current
Total
Qty
draw]=
=
1
X[0.110]=
[
]
X[0.001]=
=
[
]
X[0.005]=
1 max.
[
]
X[0.003]=
1 max.
[
]
X[0.015]=
[
]
X[0.015]=
[
]
X[0.028]=
[
]
X[
[
]
X[
[
]
X[0.025]=
[
Secondary Non-Alarm =
Total
3
]
=
3
]
=
]=
101
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