According to the National Electrical Code®, After a main power failure, the activation of an emergency system must take place within ________.
A. 10 seconds
B. 30 seconds
C. 45 seconds
D. 1 minute
A. 10 seconds
Trades & Technology
You might also like to view...
Which NEC table lists the running currents for single-phase AC motors?
A. 430.247 B. 430.248 C. 430.249 D. 430.250
Trades & Technology
What is one of the main disposal concerns in process facilities?
A. NOx B. CO2 C. Wastewater D. Excess materials
Trades & Technology
Pressing the ____ pushbutton will again disable the VFD, but bring the motor to a stop by the programmed stop parameters.
a. start b. jog c. reverse d. stop
Trades & Technology
The coefficient of friction is found by ________
A) Dividing weight force by tensile force B) Dividing tensile force by weight force C) Multiplying the weight force by the tensile force D) Multiplying the tensile force by the weight force
Trades & Technology