emergency lighting Flashcards

0
Q

emergency light has what six components

A

rechargeable battery, battery trickle charger, battery voltage indicating light, test switch, transfer relay, and one or more lamps

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1
Q

emergency lighting takes the form of

A

unit equipment

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2
Q

batteries in emergency lighting are what volatages

A

6v 12v 24v

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3
Q

besides complete ac power failure supply, what other conditions may bring on the emergency lights?

A

brown outs, and low voltage battery disconnect

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4
Q

what advantages do led have over other bulbs

A

long life and low energy consumption

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5
Q

what are two kinds of storage batteries are used in unit lighting

A

lead acid and nickel cadium

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6
Q

whats the standard minimum emergency lamp operational time on a battery and what percent of the battery must be remaining after the standard time

A

must run for 30 mins with 91% of its voltage remaining after the 30 mins

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