In a three wire PV system, the neutral or center tap of the dc system shall be grounded

Proper grounding of PV system will:

Bare, green insulation or green with yellow stripes insulation is generally used for which type of conductors

Grounded Conductors are conductors which does not carry current normally and is connected to exposed metal portions of the equipment and ground

If the conductor between the dc battery and inverter is 4/0 AWG, then the ground electrode conductor connecting the negative conductor to ground electrode will be ____

The dc system-grounding electrode conductor shall not be smaller than 4 AWG or the largest conductor supplied by the system

Ground mounted arrays are not required to have ground fault detection devices

GFID devices can perform which of the following functions

The output voltage may be made zero by short circuiting the PV module or array terminals

In a PV system, Grounding conductors which normally remain connected all the times may be provided with ____ disconnecting means

Each piece of equipment in the PV system shall have disconnecting switches to disconnect it from all the sources of power’

Ungrounded Conductors carrying current from PV power source shall be provided with which type of disconnecting means

PV System shall not be remain connected the load when the battery is taken out in a stand alone system either manually or through action of fuse or circuit breaker operation

In order to shut down the entire system with minimum number of switching actions, circuit breakers and switches shall be of ganged mutlipole units

Fuse or circuit breakers shall be ganged or paralleled to increase the current carrying capacity of the devices

High short circuit current of PV array are less significant as they are inherently current limited

Short circuit condition is less severe for stand alone systems with storage batteries as batteries are inherently current limited

For dc systems, especially for stand alone systems with storage batteries, the interrupting capacity of each over current device is specified as:

High short circuit currents will generate excessive ______ that can cause devices to blow apart or burn