Which of the following MUST be referenced for determining a site's design wind speed?

• A.The ASHRAE Handbook_fundamentals in effect
• B.The NEC version in effect
• C.The jurisdiction's local building code in effect
• D.The module manufacture's design wind speed

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An installer is hired to troubleshoot a 10-year-old roottop system with open-circuitvoltage of 300V. The ground-fault detection (GFD) device has tripped. The insulation on the exposed source circuit cables has deterlorated with multiple cracks and has no flexibility. Which concern is the MOST likely safely issue when servicing this array?

• A.Short-circuit current is present at the PV source-circuit terminals of the disconnect device because of electrical leakage.
• B.Cracked insulation has allowed water intrusion that resulted in oxidation of the copper conductors.
• C.Ungrounded conductors are conducing current event the ground-fault device has activated.
• D.Insulation has become an electrical conductor since it has changed its composition.

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A bank of batteries with capability of supplying 250A and a maximum voltage of 325V is housed in a concrete structure in a very humid location. There is service access alsie between rows of batteries. What is the REQUIRED safety distance between the rows of batteries.

• A.4 ftWhether or not the building is equipped with a dehumidifier or the batteries are insulting surfaces
• B.6 ft.When the floor is insulated and no dehumidifier is installed.
• C.3 ft. when insulted conducted conductors are used between terminals.
• D.3-1/2If the building is equipped with a dehumidifier and the batteries are on insulting surfaces

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A PV system was installed in July 2017 under the 2017 NEC. The system has a string inverter located inside a garage on a wall 10 ft, from the outside wall and 1oft, from the ac load center at the point of utility connection.
The PV system has a PV array on the roof. Which of the following represents the PV rapid shutdown system requirement for the controlled PV system conductors associated with this PV array?

• A.Within the array boundary and more than 3.ft from the point of entry of the building.
• B.More than 1 ft, from the VP array and more than 5 ft. In length the building.
• C.More than 10ft, from the PV array or more than 5 ft. in length inside the building
• D.More than 1 ft, from the PV array or more than 3 ft, from the point of entry of the building.

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An 8 AWG bare copper equipment ground conductor (EGC) is wire tied to the module mounting structure of a commercial rooftop solararray. After a few years of operation, some spots on the EGC begin to turn a green color and appear to be corroding more significantly that other places. What would the MOST likely cause of the problem?

• A.Bypass dlode failures inducing current on the EGC
• B.Array racking touching the EGC at multiple points
• C.A break in the EGC, leaving the array ungrounded
• D.Nyton wire ties in contact with the copper wire

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