Grounding and Bonding
2023 NEC (A)
2023 NEC (B)
NCCER Control Systems
Trade Knowledge
100

EGCs must be connected in a manner where the disconnection or removal of a receptacle, device, or luminaire will not interrupt its electrical _______

What is continuity 250.148(B) 

100

Name a location where HDPE conduit is NOT permitted to be installed 

What is exposed, within a building, hazardous location, subject to ambient temps above 122F   353.12 

100

A receptacle outlet shall be installed in dwelling units for every kitchen and dining area countertop space ____ inches or wider. 

What is 12"   210.52(C)(1) 

100

Contacts that are open when the coil is de-energized are referred to as 

What is normally open

100

When working above a drywall ceiling it is best to support yourself by _____

What is standing on trusses (Something structural) 

200

An underground metal ____ piping system shall NOT be used as a grounding electrode 

What is gas 

200

An outlet is a point on the wiring system at which ____ is taken to supply utilization equipment 

What is current    DEF 100 

200

Where exposed to sunlight, nonmetallic equipment shall be _____ as sunlight resistant or shall be identified as sunlight resistant 

Hint: General Requirements 

What is listed   300.6(C)(1)

200

Due to high levels of ______, lighting contactors are often used to switch multiple lighting branch circuits with one single switch 

What is inrush currents 

200

In an inductive AC circuit, the ____ leads the ____

 

What is voltage & current 

ELI 

300

If rock bottom is encountered while driving a ground rod, the rod can be driven at an angle not to exceed ______ degrees or placed in a trench that is at least _____ inches deep 

What is 45 degrees and 30

300

An explanatory note in the NEC recommends a voltage drop for both feeders and branch circuits to the farthest outlet to not exceed _____ %  

What is 5     215.2 IN

300

Class III locations are those that are hazardous because of the presence of ______

What is easily ignitable fibers or materials producing combustible flyings   500.5(D)

300

To protect a motor, it should be equipped with automatic protective devices that will ___ the circuit 

What is open 

300

Before digging or performing any underground work it is best practice to _______

What is call diggers hotline 

811

400

What size copper single supply-side bonding jumper is required for a raceway containing 3/0 AWG copper service conductors 

What is #4 AWG T250.102(C)(1) 

400

All energized equipment in fire pump rooms shall be located at least ____ inches above floor level

What is 12      695.12(D) 

400

Outdoor mobile home disconnecting means shall be installed so the bottom of the enclosure containing the disconnecting means in not less than _____ above grade 

What is 2 feet    550.32(F) 

400

Overload relays can be classified as being either _____ or ______

What is thermal or magnetic 

400

DAILY DOUBLE

What is the name of the test used to determine if metering equipment is functioning properly 

What is live-dead-live 

500

What size equipment bonding jumper is required for each metal raceway where the circuit conductors are protected by a 1,200A overcurrent protective device? 

What is 3/0 AWG 250.102(D)    T250.122

500

Aluminum, copper-clad aluminum, or copper conductors _____ and larger shall be permitted to be connected in parallel 

What is 1/0 310.10(G)(1) 

500

A single phase 2400 watt baseboard heater rated at 240 volts is connected to a 208 volt circuit. The expected current of the baseboard heater at 208 volts is _____

What is 8.6 amps 

R=E^2/P    240^2/2400= 24 Ohms 

I= E/R        208/24= 8.6 amps 

500

If low-voltage and line-voltage cables must be placed in parallel runs, they should be separated by at least ____

What is 6 inches 

500

The best way to avoid electrical shock is to ______ a circuit before working on it 

What is de-energize