Code Question of The Day

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Friday, February 26, 2021

Question:

1 day 9 hours ago

Greetings Thomas,

Section 450.3 and Table 450.3(B) with Notes are used to determine the overcurrent protection size. This question presumes the OCPD is installed on the primary side of the transformer. Based on the Standard Ampere Rating Table in 240.6(A), 125 amperes would generally be required (112 amperes round up to the next higher size).  

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Thursday, February 25, 2021

Question:

2 days 9 hours ago

Greetings Friends,

My question is related to the figures that appear occasionally in the NEC. Are they mandatory? Thanks for your opinion on this.

Patrick Sutherland

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Friday, February 26, 2021

Question:

1 day 9 hours ago

Greetings Thomas,

Section 450.3 and Table 450.3(B) with Notes are used to determine the overcurrent protection size. This question presumes the OCPD is installed on the primary side of the transformer. Based on the Standard Ampere Rating Table in 240.6(A), 125 amperes would generally be required (112 amperes round up to the next higher size).  

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