Question 31
While reviewing a lighting plan, a journeyperson sees a note indicating 'switch leg' between a wall switch and a fixture. What does this typically mean?
Question 32
On a residential electrical plan, which symbol typically represents a recessed ceiling luminaire?
Question 33
A continuous load of 32 A will be supplied from a 240 V single-phase source. Using the common 125 percent sizing for continuous loads, what minimum standard circuit breaker rating should be selected?
Question 34
On a basic residential floor plan, which symbol typically represents a duplex receptacle outlet?
Question 35
A 15 A, 120 V general-purpose branch circuit in a dwelling is intended to supply receptacle loads only. Approximately what is the maximum continuous load (in amperes) that should be connected to this circuit?
Question 36
On a set of electrical drawings, several keynote references point to a panel schedule that does not match actual installed breaker sizes. As the supervising electrician, what is your best course of action?
Question 37
In a lighting circuit, several fixtures on the same switch are all off. The breaker is not tripped, and voltage from hot to ground at the first fixture reads about 120 V, but the lamp does not light. What is the most likely fault?
Question 38
On a residential lighting plan, which symbol commonly represents a ceiling-mounted light fixture?
Question 39
On a typical architectural electrical plan, which symbol usually represents a standard duplex receptacle?
Question 40
What is the purpose of the 'Inverse Square Law' in lighting design?
Question 41
What unit is used to measure the light output (brightness) of a lamp?