128

a.3

Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps and Ckt. 9 is drawing 16 amps, how much current is flowing in the neutral? a.3 b.13 c.16 d.29

a.240

Refer to Figure 128.202. ___ volts are applied across the water heater element. Select one: a.240 b.480 c.120 d.0

e.120

Refer to Figure 128.203. The voltage across Lamp 1 is ___ volts. .0 30 240 60. 120

a. The grounded (neutral) conductor will be overloaded.

Two 20-amp circuits with a shared neutral are fed from a 120/240-volt, 1Ø panel. If the ungrounded circuit conductors are connected to breakers 1 and 2, which of the following will happen when a 16-amp load is connected to Circuit 1 and a 14-amp load is connected to Circuit 2? Select one: a.The grounded (neutral) conductor will be overloaded. b.120-volt equipment could be destroyed because a higher voltage will be applied. c.One of the ungrounded conductors will be overloaded. d.Any of these e.None of these

c. The load of higher resistance would overheat and probably be damaged.

What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? a.No effect until one load is turned off or opens. b.No effect. c.The load of higher resistance would overheat and probably be damaged. d.The load of lesser resistance would overheat and probably be damaged.

a.parallel

When loads such as lamps, motors, and heaters are connected to one circuit of a multiwire branch circuit, these loads are connected in ___. Select one: a.parallel b.series