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Exam 14: Branch Circuit Installation

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Question 21

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Electric water heaters must be wired with a three-wire cable because the white conductor in a two-wire cable is not permitted to be used as an ungrounded conductor in this type of installation.

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Question 22

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While there is no limit to the number of receptacles that can be connected to a general lighting branch circuit, a good rule of thumb is to assign each receptacle outlet a value of ____________________ amperes.

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Question 23

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A(n) __________-colored switch cover is used to identify an oil burner safety switch.

The NEC requires at least one 15 or 20 amp, 125 volt receptacle in a bathroom and it must be located no more than __________ inches from the edge of the basin.

The NEC requires that small appliance branch circuits be protected with ____________________-ampere overcurrent protection devices.

In an electric motor circuit the size of the circuit breaker and the circuit conductors is determined by the __________ of the motor.

The NEC requires a laundry circuit to be rated at ____________________ amperes.

Smoke detectors in homes must be hardwired to the electrical system but may have battery backup.

When an installation technique is used that brings the circuit conductors directly to an electrical appliance and then terminates them at the appliance, the appliance is said to be ____________________.

Who decides whether 15 or 20 amp rated general lighting circuits will be installed in a residential electrical system?

A general lighting branch circuit installed in a house and protected by a 15-ampere circuit breaker may be wired with a __________ AWG copper conductor.

In older smoke detectors the interconnect wire was colored yellow but newer smoke detectors are using a red interconnect wire.

Which NEC Table will tell you the full load current for a single-phase electric motor?

Instead of installing the required bathroom receptacle on a wall or partition adjacent to the basin, it may be installed on the side or face of the basin cabinet, as long as it is located no more than __________ inches below the countertop.

Where should carbon monoxide (CO) alarms be mounted?

The NEC requires most motor applications to be protected by overload devices sized not more than __________ of the motor's nameplate current rating.

There is no maximum number of receptacles allowed on 15, or 20 amp branch circuits in a house but it is suggested that the maximum number of receptacles permitted on a 15-amp rated circuit be no more than 10 and the maximum number of receptacles permitted on a 20-amp rated circuit be no more than __________.

The receptacle installed for a clothes washing machine located in a laundry area of an unfinished basement or a bathroom must be GFCI protected.

If an electric water heater is connected to water piping with connections that are designed so the water heater can be quickly and easily removed, a flexible cord and plug connection is allowed.

HACR is an acronym found on some circuit breakers and stands for 'heating, air conditioning, and ventilation'.