Electrical Theory Chapter 3 Unit 13

TRUE

If the current in each ungrounded conductor of a multiwire circuit is the same, the grounded conductor carries 0A.

TRUE

If the ungrounded conductors of a multiwire circuit are not terminated to different phases, this can cause the neutral current to exceed the grounded conductor rating.

a grounded conductor and ungrounded conductors

A 2-wire, 120/240V circuit, from a 2-wire 120V system contains ______________________.

0

A balanced 3-wire 120/240V, single-phase circuit is connected so that the ungrounded conductors are from different transformer phases ( Line 1 and Line 2). The current on the neutral condeuctor is ________________ percent of the ungrounded conductor current.

TRUE

A multi wire circuit has two or more ungrounded conductors having a potential difference between them, and having an equal difference of potential between each ungrounded conductor and the neutral conductor.

2-Wire or 4 Wire

According the the IEEE Dictionary, a neutral conductor has the same potential between it and all ungrounded conductors of a ________________ system.

100%

The current on the grounded of a 2-wire circuit is _____________ of the current on the ungrounded conductor.

TRUE

The grounded conductor is a conductor that is intentionally grounded to the earth.

TRUE

The grounded conductor of a 3-wire, 120/240, single phase circuit only carries the unbalanced current when the circuit is not balanced.

FALSE

The neutral conductor of a 3-wire, 120/240 or 277/480V circuit supplied form a 4-wire, three-phase system never carries neutral current.

Unbalanced Current

the current flowing on the neutral conductor of a multi-wire circuit

Neutral Conductor

the______________________, according to the NEC, is a conductor that is intentionally grounded to the earth. In the case of a single phase home wiring (120/240), the grounded conductor is often called the neutral conductor