What precautions should you take before servicing a HID lamp?
What will be an ideal response?
1. Never probe the output connector of the ballast.
2. Never probe either power or ground between the arc and tube assembly.
3. Each headlamp assembly has a high-voltage generator. Be sure to disconnect the battery before attempting to service HID lights, and follow the manufacturer's service instructions.
4. While the headlamps are on, do not touch the red or amber insulation on the wiring harness to the lamps.
5. Never turn on the headlamps when the bulb is out of the socket.
6. Never service an HID system while your hands are wet.
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Refer to Figure 1. What is the total load a feeder serving four 2hp motors, three 5hp motors, one 15hp motor, and one 25hp motor? All motors are 208V.
a. 50A
b. 145.2A
c. 201.1A
d. 219.8A
Electronic control circuits generally are direct current circuits with their own power supply, usually an AC to AC diode rectifier.
Answer the following statement true (T) or false (F)
Is the key to successful transplanting rapid root growth?
Indicate by YES (Y) or NO (N).
Which of the following phrases is not true regarding the primary purpose of increasing the size of equipment grounding conductors?
A. When the phase conductors are increased in size to adjust for voltage drop. B. When the phase conductors are increased in size to adjust for high ambient Temperatures. C. When the phase conductors are increased in size to adjust for more than three current- carrying conductors in a raceway or cable. D. When the phase conductors are increased in size for high harmonic currents