On Sun, 12 Nov 2017 18:49:46 -0500, wrote:

On Sun, 12 Nov 2017 17:32:38 -0500, Clare Snyder
wrote:

On Sun, 12 Nov 2017 11:57:41 -0800 (PST), whit3rd
wrote:

On Sunday, November 12, 2017 at 10:55:53 AM UTC-8, Clare Snyder wrote:

[about breaker tripping]

If the high-mag 15 doesn't solve the issue a high-mag 20 will take
it's place.

According to the NEC (US electrical safety code) a 20A breaker is not compatible with
a 14 ga branch circuit.






Overcurrent protection for motors is different than protection for
other types of electrical loads, and the values you come up with might
not seem right based on your experience with other types of
applications. Protecting a 14 AWG conductor with a 30A circuit
breaker, for example, just looks wrong. But keep in mind that motor
branch circuit conductors are protected against overloads by the
overload device. That device is sized between 115% and 125% of the
motor nameplate current rating [430.32].

The small conductor rule contained in 240.4(D), which limits 15A
protection for 14 AWG, doesn’t apply to motor circuit protection. See
240.4(D) and 240.4(G).

But the OCD's purpose isn't to protect the motor, rather the wiring.

Just answering questions about code with code.