Patient Care Areas #1
An essential electrical system in a health care facility must contain at least _____?
A vital branch
24-302
What type of branch of an essential electrical system within a health care facility must power be restored to within 1 minute of a power failure?
Delayed vital branch
24-002
What equipment shall the emergency supply system consist of?
Onsite generator(s)
24-306
Where a branch circuit supplies two or more capacitors, the overcurrent device protecting the conductors of the branch circuit shall be considered as protecting the taps made to supply single capacitors provided the taps are not more than ____m long.
7.5m
26-208
The maximum rating or setting of the overcurrent device for a capacitor branch circuit conductor shall not exceed _____% of the rated current of the capacitor.
250%
26-210
What is an isolated system?
One in which no circuit conductor is connected directly to ground
24-002
What type of system shall branch circuits in basic care areas be supplied from?
Grounded distribution system
24-104
What insulation colors shall be used in isolated circuits?
Orange and brown
24-204 2)
What is the required conductor ampacity of a capacitor rated at 150 A?
202.5A
135% x 150A
26-208 1)
What is the minimum calculated ampacity for a capacitor tap conductor when the branch circuit conductor supplying it has a rated ampacity of 36A?
12A
36/3 = 12A
26-208 2) b)
How shall all receptacles supplied from circuits in an essential electrical system be colored?
Red
24-108
Receptacles located in basic care areas that are routinely cleaned using liquids that normally splash against walls shall be installed not less than _____mm above the floor.
300
24-108
To which screw of the receptacle shall the orange-insulated conductor be connected in an isolated circuit?
24-204 2)
What is the maximum rated current of a capacitor that may be connected to a branch circuit that uses a No. 8 AWG copper RW90 conductor? All equipment and terminations are rated at 75 °C.
Table 2 -> 50A
50/1.35 = 37.037A
26-208
A 600 V capacitor uses a permanently connected resistor to drain the stored charge on the capacitor to 50 V when disconnected. What is the maximum time period in which this must be accomplished? And what rule states this?
1 minute
26-222
Who is responsible for designating patient care areas within a health care facility?
Health care facility administration
What is the designation of an area within a health care facility that is an anesthetizing location, or in which cardiac contact between a patient and medical equipment is normal and frequent?
Critical care area
24-002
At the time of installation the total impedance between ground and each energized conductor of a single-phase isolated system shall exceed _____ Ω without utilization equipment or the line isolation monitor connected.
200,000
24-204
An open contactor rated for 70 A is to be used as the disconnect for a capacitor bank.
What is the maximum rated current the capacitor bank can have?
70/1.35 = 51.85A
26-216
What is the maximum rating of overcurrent device for a single-phase, 3 kVAR capacitor rated at 240 V?
3000VAR/240V = 12.5A
250% x 12.5A = 31.25A (26-210)
Table 13 -> Select 30A since we are asked for the MAXIMUM rating
The patient care environment includes the space within _____m beyond the perimeter of the bed, table or other supporting mechanism and the space within _____m of the floor.
1.5m, 2.3m
24-002
What visual marker indicates that a receptacle is hospital grade?
Green dot
What is the purpose of a line isolation monitor?
Monitors impedance-to-ground of the system and together with any loads connected to it.
24-204 5)
In what connection scenario does a capacitor NOT require a discharge circuit or a separate disconnect?
Between the motor starter and the motor
In what connection scenario does a capacitor require a discharge circuit but NOT a separate disconnect?
Between the motor disconnect and the motor starter
26-218, 26-222