4.A. If a bonding jumper is installed from a grounded metal box to a grounding-type receptacle, the length of the bonding jumper will be between A. 2 and 4 feet. B. 2 and 4 inches. C. 6 and 10 feet. D. 6 and 10 inches.
4.A. If a bonding jumper is installed from a grounded metal box to a grounding-type receptacle, the length of
the bonding jumper will be between
A. 2 and 4 feet.
B. 2 and 4 inches.
C. 6 and 10 feet.
D. 6 and 10 inches.
4.B. Why isn't solder permitted to be relied on for grounding electrode connections?
A. The solder increases the chances of a ground-fault event occurring.
B. The heat from the solder weakens the connection and exposes it to physical damage.
C. The use of solder doesn't meet the requirements for corrosive influences.
D. The connection's integrity can be negatively affected by heat during a ground-fault event.
4>c. Which of the following statements about bonding is true?
A. The strike terminals of a lightning protection system must be bonded to the building or structure grounding electrode system.
B. Bonding requirements on the supply side of the service disconnect are less restrictive.
C. Wire-type supply-side bonding jumpers are usually short in length and installed from the service-entrance conductor to a
single raceway.
D. Metal water piping systems have one set of rules in the National Electrical Code.
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