Electrician Red Seal · Question
A renovation project requires adding several receptacle outlets to an existing drywalled room using armoured cable (AC90). Which of the following is the most appropriate method for connecting the new AC90 cable to an existing steel junction box?
Armoured cable requires an approved connector, such as an AC90 connector, to securely terminate it into a junction box and protect the conductors from the sharp
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Question: A renovation project requires adding several receptacle outlets to an existing drywalled room using armoured cable (AC90). Which of the following is the most appropriate method for connecting the new AC90 cable to an existing steel junction box?
Answer options:
- Wrap the conductors around the knockout and secure with electrical tape.
- Use a plastic bushing and secure with a locknut.
- Insert the cable directly into the knockout and crimp it with pliers. ✅ Use an armoured cable connector designed for AC90, secured with a locknut.
Correct answer: Use an armoured cable connector designed for AC90, secured with a locknut.
Explanation: Armoured cable requires an approved connector, such as an AC90 connector, to securely terminate it into a junction box and protect the conductors from the sharp edges of the armour. Other methods are unsafe and non-compliant.
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