PV 2 Flashcards

1
Q

A static structural load due to the weight of accumulated snow

A

Snow load

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2
Q

The estimated temperature of a module operating in a specific mounting system design

A

Installed nominal operating cell temperature

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3
Q

The maximum value of a 3 sec gust at 33’ (10m) elevation, which is used in wind loads calculations

A

Basic wind speed

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4
Q

A dynamic structural load due to the weight of temporary items and people using or occupying the structure

A

Live load

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5
Q

A dynamic structural load due to periodic motion

A

Vibration load

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6
Q

The addition of lumber under a roof surface and across trusses or rafters as supplemental structural support

A

Spanning

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7
Q

A type of fixed tilt array mounting system where modules are affixed directly to an existing finished rooftop or other building surface with little or no space between a module and the surface

A

Direct mount

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8
Q

An array mounting system that uses no electrical means to automatically direct an array mounting towards the sun

A

Passive tracking mount

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9
Q

A static structural load due to the weight of permanent building members, supported structure, and attachments

A

Dead load

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10
Q

The condition when a vibration frequency matches the fundamental frequency of the structure

A

Resonance

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11
Q

An attachment method that relies on the weight of the array, support structure, and ballasting material to hold the array in position

A

Self ballasting

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12
Q

An array mounting system that uses electric motors and gear drives to automatically direct the array towards the sun

A

Active tracking mount

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13
Q

An array mounting system that permanently secured modules in a non-movable position at a specific tilt angle

A

Fixed tilt mounting system

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14
Q

a type of fixed tilt array mounting system where modules are supported by a structural parallel to and slightly above the roof surface

A

Stand-off mount

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15
Q

A type of array mounting system where modules are installed at an elevation on a pedestal

A

Pole mount

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16
Q

A device that prevents conductors or devices from reaching excessively high temperatures under high current loads by opening the circuit

A

Over current protection device

17
Q

A diode used to pass current around, rather than through, a group of PV cells

A

Bypass diode

18
Q

A conductor connecting exposed metallic equipment, which might inadvertently become energized, to the grounding electrode conductor

A

Equipment grounding conductor (EGC)

19
Q

The current that a conductor can carry continuously under the conditions of use without exceeding its temperature ratings

A

Ampacity

20
Q

A circuit breaker that allows current flow in either direction

A

Back fed breaker

21
Q

The automatic opening of conductors involved in a ground fault

A

Ground fault protection

22
Q

The maximum over current that an over current protection device is able to stop without being destroyed or causing an electrical arc

A

Interrupting rating

23
Q

The circuit connecting the PV source to the rest of the system

A

PV output circuit

24
Q

A conductive rod, plate, or wire buried in the ground to provide a low resistance connection to the earth

A

Grounding electrode

25
Q

The circuit connecting a group of modules together and to the common connection point of the DC system

A

PV source circuit