SPIN-UP Practice Test 1 Problem 32 (1-32)

[power62]

Problem based on 2011 NEC : What is the maximum non-time delay fuse rating for 1 phase motor used for a branch circuits?

Answer provided is 300 amps (D).

Based on Table 430.52 Max. rating/setting is provided in terms of % of FLA. In this case it should be 300% of FLA. Since we do not know the FLA of motor the answer cannot be in terms of amps.

Please provide any help, maybe I am missing something.

 

[Judowolf PE]

Power, you can ask Joan from Spin-up, but I'm pretty sure that was just a typo. There are several for the first Spin-up exams. They are a good place to start and they sharpen your skills. If you go to their website there is errata, but I'm not sure how up to date it is. Good Luck!

 

[spinup]

Problem based on 2011 NEC : What is the maximum non-time delay fuse rating for 1 phase motor used for a branch circuits?

Answer provided is 300 amps (D).

Based on Table 430.52 Max. rating/setting is provided in terms of % of FLA. In this case it should be 300% of FLA. Since we do not know the FLA of motor the answer cannot be in terms of amps.

Please provide any help, maybe I am missing something.

Power62,

It appears you are using the first edition which is retired and out of print. Spin-Up is currently in its second edition.

The errata for the first edition is located at www.spinupexams.com under the "Support" tab.

From the errata for this problem:

Item#4 - Page 19 - Problem 1-32 - Reported 1/29/12

Change answer units from "amps" to "%"

Sorry for the inconvenience.

Good luck on your studies!

Joan

 

[power62]

Thanks Joan and Judowolf.