I’m trying to connect three motors (under 1 HP, 3 amps each) on a single branch circuit but need help with the wording of 430.53 “Several Motors or Loads on One Branch Circuit”.
My first concern is that this sections says you can follow 430.53(A), (B), or (C). So if all of the motors are under 1 HP, it seems like I can simply follow (A) “Not Over 1 Horsepower” and not be concerned with (B) or (C). But following (A) alone gives no information on branch circuit sizing requirements. Devils advocate: can I connect 10, 20, 30, or 50, motors one branch circuit? Also, how do I size the branch circuit OCPD for multiple motors (in my case 3 motors)?
Section (B) “If Smallest Rated Motor Protected” is a little bit more descriptive and gives more insight into branch circuit sizing. But is this section only followed if one motor or more motors are over 1 HP?
Section (C) sounds like it’s only used for factory assembled installations, is this correct? Section (D) sounds like it only applies to section (C).
My first concern is that this sections says you can follow 430.53(A), (B), or (C). So if all of the motors are under 1 HP, it seems like I can simply follow (A) “Not Over 1 Horsepower” and not be concerned with (B) or (C). But following (A) alone gives no information on branch circuit sizing requirements. Devils advocate: can I connect 10, 20, 30, or 50, motors one branch circuit? Also, how do I size the branch circuit OCPD for multiple motors (in my case 3 motors)?
Section (B) “If Smallest Rated Motor Protected” is a little bit more descriptive and gives more insight into branch circuit sizing. But is this section only followed if one motor or more motors are over 1 HP?
Section (C) sounds like it’s only used for factory assembled installations, is this correct? Section (D) sounds like it only applies to section (C).