) $"''! %" $ )& 1 5.3 Calculating the System Current Draw5.3.1 Overview % ' " ( ( ') ; &% %""!" - , % + %%" , !') "''! ) ' ! ') '' 9 " %" " ( + '- + % ' " "'' - %" " - , % + %%" , ') "''!9 " %" " ( + '- + % ! ') " % 4( 6 " ( ( ') ! " - ' ! ') + %%" , % !') " % 9 " %" " ( + '- +8 %%"- %" ) ( ! . 9 ,)-O G !I , ') " % , % ' O G$ % !I , % ' I (%*"' ( O %" -& ' 4 6+ ( + ) ) %& ' % ' ," ' +5.3.2 How to Use Table 5.3 on page 129 to Calculate SystemCurrent DrawUse Table 5.3 on page 129 to calculate current draws as follows:1. Enter the quantity of devices in all three columns2. Enter the current draw where required. Refer to the ADT Device CompatibilityDocument for compatible devices and their current draw3. Calculate the current draws for each in all columns4. Sum the total current for each column5. Copy the totals from Column 2 and Column 3 to Table 5.4 on page 130Following are the types of current that can be entered into Table 5.3 on page 129:✓ Calculation Column 1 - The primary supply current load that the control panelmust support during a non-fire alarm condition, with AC power applied.✓ Calculation Column 2 - The primary supply current load that the control panelmust support during a fire alarm condition, with AC power applied.✓ Calculation Column 3 - The standby current drawn from the batteries in a non-fire alarm condition during a loss of AC power.Table 5.2 Converting to Full Amperes!+111 #" 2#5 ' 4 6 ' 4 6 ; + ; + L + 5% ' 4P 6 ' 4 6 P ; + P ; + L +
