Wheelock NS-1215W, Installation Instructions Manual, Page: 4 / 10

P84030 D
Sheet 4 of 10
Table 3A: Rated Average Current (AMPS) with Low dBA Setting
Rated Average Current (Low) *
Voltage NS-2415W NS-2430W NS-2475W NS-24110W
MEAN RMS MEAN RMS MEAN RMS MEAN RMS
16.0VDC 0.098 0.098 0.136 0.136 0.226 0.226 0.336 0.345
24.0VDC 0.072 0.072 0.095 0.097 0.156 0.176 0.209 0.282
33.0VDC 0.069 0.070 0.086 0.086 0.129 0.149 0.162 0.239
16.0VRMS ------ 0.126 ------ 0.169 ------ 0.284 ------ 0.414
24.0VRMS ------ 0.110 ------ 0.148 ------ 0.246 ------ 0.332
33.0VRMS ------ 0.113 ------ 0.135 ------ 0.218 ------ 0.307
Voltage NS-1215W ------ ------ ------
MEAN RMS ------ ------ ------
8.0VDC 0.233 0.304 ------ ------ ------
12.0VDC 0.132 0.224 ------ ------ ------
17.5VDC 0.097 0.166 ------ ------ ------
8.0VRMS ------ 0.280 ------ ------ ------
12.0VRMS ------ 0.225 ------ ------ ------
17.5VRMS ------ 0.190 ------ ------ ------
* Rated average current is measured using mean value.
WARNING: MAKE SURE THAT THE TOTAL AVERAGE CURRENT, TOTAL PEAK CURRENT AND TOTAL
INRUSH CURRENT REQUIRED BY ALL APPLIANCES THAT ARE CONNECTED TO THE SYSTEM’S PRIMARY
AND SECONDARY POWER SOURCES, NAC CIRCUITS, SM, DSM SYNC MODULES OR PS-12/24-8 POWER SUPPLY
DO NOT EXCEED THE POWER SOURCES’ RATED CAPACITY OR THE CURRENT RATINGS OF ANY FUSES ON
THE CIRCUITS TO WHICH THESE APPLIANCES ARE WIRED. OVERLOADING POWER SOURCES OR
EXCEEDING FUSE RATINGS COULD RESULT IN LOSS OF POWER AND FAILURE TO ALERT OCCUPANTS
DURING AN EMERGENCY, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH
TO YOU AND/OR OTHERS.
When calculating the total average, peak or inrush currents: Use Table 3 and 3A to determine the highest value of “Rated Average
Current” for an individual strobe (across the expected operating voltage range of the strobe), and use Table 3 to determine the highest
value of “Rated Inrush Current” or “Rated Peak Current” (whichever is higher) of an individual strobe (across the expected voltage
range of the strobe), then multiply these values by the total number of strobes; be sure to add the currents for any other appliances,
including audible signaling appliances, powered by the same source and include any required safety factors.
If the inrush current or peak current exceeds the power supplies’ inrush capacity, the output voltage provided by the power supplies
may drop below the listed voltage range of the appliances connected to the supply and the voltage may not recover in some types of
power supplies. For example, an auxiliary power supply that lacks filtering at its output stage (either via lack of capacitance and/or
lack of battery backup across the output) may exhibit this characteristic.
CAUTION: Series NS are not designed to be used on coded systems in which the applied voltage is cycled on and off.