Amp Up Your Skills: Conquer the 2025 New York Master Electrician Exam!

Image Description

Question: 1 / 400

What is the permitted use for a knife switch rated for more than 1200 Amps at 250 Volts or less?

Can be used for load switching

Can be used as an isolate switch only

A knife switch rated for more than 1200 Amps at 250 Volts or less is specifically designed for isolating electrical circuits. This is due to its ability to provide a secure, visible means of disconnecting power. An isolating switch operates by physically interrupting the current flow, ensuring that maintenance and service work can be performed safely on the connected equipment.

In this context, the switch is not intended for load switching or managing fluctuating electrical loads, as its primary function is to serve as a disconnecting means. Unlike circuit protection devices, which are designed to protect circuits from overload or short circuit conditions, the knife switch does not offer this protection inherently. Moreover, while it may be involved in emergency shut-off scenarios, its primary designation in this rated capacity is for isolation, making it crucial for safety protocols in electrical installations.

Get further explanation with Examzify DeepDiveBeta

Can be used for emergency shut-off

Can be used for circuit protection

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy