Where a main bonding jumper is required by the NEC®, the jumper cannot be less than what percentage of the area of the largest phase conductor?
a. 12.50%
b. 14%
c. 17.50%
d. 20%
a. 12.50%
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____________________ overload relays are used when the control is located in a varying ambient temperature and the motor that it protects is in a constant ambient temperature.
Fill in the blank(s) with the appropriate word(s).
The founding of the American colonies by the British was
A. accomplished in a well-planned fashion. B. based on the high-minded aspirations of groups such as the Puritans and the Quakers. C. undertaken by the government in every case. D. undertaken in a haphazard manner. E. rarely undertaken by trading companies or religious groups.
Figure 25-1
The accompanying figure shows transformers connected in open-____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is LEAST-Likely true?
A. Modern head gaskets are called permanent torque or non-retorque. B. The greatest torque gain will occur during the first hour a rebuilt engine is operated. C. A gasket must be able to maintain a good seal over its lifetime. D. Small changes in a gasket's thickness can result in a substantial loss of clamping force.