3/2 Code Review
The circuits found in article 725 are listed in three ways. Name them.
1,2,3; Article 725.2
What is the maximum number of 20 amp receptacles permitted to be installed in a 120 volt circuit which supplies only receptacle loads in a commercial occupancy?
13; Article 220.14(I)
What table is used to determine the maximum number of conductors permitted in a square or octagonal box or device?
314.16(A)
What tables are needed to determine the minimum THW, copper branch circuit conductors needed to supply a 30hp, 480v, 3-phase induction motor?
430.250 & 310.15(B)(16)
What is the lighting load for a one-story single-family dwelling unit that is 1950 square feet?
5850VA; Article 220.12 & 220.82
What is the minimum size, individual service-entrance conductors to a building which requires a 2400/4160 volt primary server?
6 AWG; Article 230.202(A)
Enclosures housing electrical apparatus that are controlled by lock and key shall be considered accessible to QUALIFIED PERSON.
Article 110.26(F)
Where more than one building or structure on the same property and under SINGLE MANAGEMENT each additional building or other structures served shall be supplied by one feeder or branch circuit.
Article 225.30(E)
Additional services shall be permitted for the following: (1) fire pumps (2) emergency systems (3) legally required standby systems (4) optional standby systems (5) parallel power production systems (6) systems design for connection to multiple sources of supply for the purpose of enhanced reliability
Article 230.2(A)(B)(C)(D)
The minimum clearance from ground to service entrance conductors rated at 277/480, which pass over commercial areas, not subjected to truck traffic is 12 feet
Article 230.24(B)(2)
On a 4-wire Delta connected service where the midpoint of one phase is grounded, the service conductor having in a higher phase voltage to ground shall be durably and permanently marked by the outer finish that is ORANGE in color or by other affective means.
Article 230.56 or 110.15
Vertical clearance of final spans of service conductors located above, or within 3 feet measured horizontally of, platforms, projectors, or surfaces from which they might be reached shall be maintained in accordance with section 230.24 (B)
Article 230.9(B)
A single equipment grounding conductor run with multiple circuits in the same raceway; shall be sized for the largest overcurrent device protecting conductors in the same raceway
Article 250.122(c)
At least 6 inches of free conductor measured from the point of the box shall be left for splicing
Article 300.14
Direct buried conductors for over 600v installation shall be enclosed in LISTED raceways at the point at which they emerge from the ground.
Article 300.50(c)
For the purposes of article 490, high voltage shall be defined as more than 1000 volts, nominal
Article 490.2
The service equipment for a mobile home shall be located in sight from and not more than 30 feet from the exterior wall of the mobile home service
Article 550.32(A)
When a permanently installed pool has at least one 125 volt 15 or 20 amp receptacle on that general-purpose branch circuit it shall be located a minimum of 6 feet from and not more than 20 feet from the inside wall of the pool.
Article 680.22(A)(1)
Ceiling fans should not be installed over a pool or over an area exceeding 5 feet horizontally from the inside walls of a pool unless no part of the ceiling fan is less than 12 feet above the maximum water level. The installation is new in outdoors.
Article 680.22(B)(1)
A clearly labeled emergency shut off or control switch for the purpose of stopping the motors that provide power to the recirculation system in jet system shall be installed readily accessible to the users and at least 5 ft away, adjacent to, or within sight of the spa or hot tub.
Article 680.41
List of packaged hot tubs of spas located outdoors shall be permitted to be cord and plug connected with a cord no longer than 15 ft if protected by a ground fault circuit interrupter.
Article 680.42(A)(c)
Wall switches shall be located at least 5 feet measured horizontally from the inside walls of a spa or a hot tub
Article 680.43(c)
All metal piping systems associated with the fountain shall be bonded to the EQUIPMENT GROUNDING CONDUCTOR of a branch circuit supplying the fountain.
Article 680.83
In general, current supply, in the advent of a power interruption shall be available within 10 seconds.
Article 700.12
For branch circuits that supply equipment classified as emergency, there shall be an emergency supply source to which the load will be transferred AUTOMATICALLY upon the failure of the normal supply.
Article 700.18
In places of assembly, such as theaters, a SWITCH for controlling emergency lighting systems shall be located in the lobby or at a place conveniently assessible theirto.
Article 700.21
The branch circuit overcurrent devices in emergency circuit shall be accessible to AUTHORIZED persons only.
Article 700.26
the alternate source of power for legally required standby systems SHALL NOT be required to have ground fault protection of equipment.
Article 701.26
The optional standby system wiring SHALL be permitted to occupy the same raceways, cables, boxes and cabinets with other general wiring.
Article 702.10
What words shall be posted in plain view where the voltage exceeds 600v nominal?
DANGER HIGH VOLTAGE KEEP OUT; Article 110.34(c)
Are the provisions of part VIII of article 230 intended to apply to the load or supply side of the service point?
Load; Article 230.200
An article 725 Class 1 circuits are listed in two ways. Name them.
Power limited and remote control signaling; 725.41
In article 725 Class 1 circuits are listed in two ways. Name them.
Power limited and remote control signaling; 725.41
