MOCP 10A?

[Rock86]

Anyone installing a 10A circuit breaker? I have a manufacturer's cutsheet calling for an MOCP of 10A. I have been seeing this more and more.

 

[augie47]

I note the 2023 NEC now lists 10 amps as one of the :Standard Ratings" in Table 240.6(A)
I've seen a few SqD QO10 in the past

 

[jim dungar]

I note the 2023 NEC now lists 10 amps as one of the :Standard Ratings" in Table 240.6(A)
I've seen a few SqD QO10 in the past

10A breakers have been around for decades as supplemental protection. It is only recently that the NEC has allowed them for branch circuit protection.

 

[don_resqcapt19]

Even though 10 amp became a standard OCPD rating only in the 2023 code, manufacturers have had them available for a long time...I installed some 30+ years ago.

 

[Frank DuVal]

It is only recently that the NEC has allowed them for branch circuit protection.

They have been a Square D QO product for years. Certainly this is not supplemental, as they fit Load Centers. Unless you mean supplemental to the main breaker.

I''ve not used one in a residential panel yet, but have in industrial panels.

 

[zbang]

Does this need it's own/dedicated 10 amp circuit or can you grab a nearby 20 amp circuit and put a fuse in-line to this device? (What is this thing, anyway?)

 

[Rock86]

Does this need it's own/dedicated 10 amp circuit or can you grab a nearby 20 amp circuit and put a fuse in-line to this device? (What is this thing, anyway?)

Its an ERV. I assume that could be done. By what everyone is saying though, I will call for the 10A breaker and see what happens.

 

[zbang]

ERV? ("Energy recovery ventilation"?)

Does it need a dedicated circuit? Tapping/fusing from an existing one will be a lot less expensive. (Also depends on the install location and maintenance regime.)

 

[Tulsa Electrician]

Looking at the data sheet.
I would say no it would not require a deducted circuit.
We usually use a fused switch at the unit.
Install a 10 amp fuse.
The switch will serve as disconnecting means at unit.
Handy box or single gang box SSU, four square box SSY.

 

[qcroanoke]

Years ago Kidde required a 10 amp breaker on the FACP we installed for Halon suppression systems