A 20-ampere branch circuit cannot be used to power 20-ampere outlets, only 15-ampere outlets. Either 15- or 20-amp receptacles can be powered by a 20-amp circuit. Receptacles connected to a branch circuit with a 30 amp rating must have a 30 amp rating.
On a 20-ampere, 120-volt breaker, a maximum of 13 outlets are permitted. These outlets can be 15-ampere, 20-ampere, or any combination of the two in accordance with Tables 210.21(B)(3) and 210.24.
Therefore, Either 40- or 50-amp receptacles can be powered by a 40-amp branch circuit.
Learn more about circuit here:
https://brainly.com/question/24059031
#SPJ1