OCPD, next size up (next two size up)

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de2

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You got two loads next ti each other 10 amp and 5 amp, manufacturer spect for current usage, not a MOCP, and you want to use single ocpd for both

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de2

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Newark, NJ
I was not clear relying to your question.
10 amp and 5 amp are load currents.
So 15 amp total non continous load. Is 20 amp OCPD is ok as per NEC now?

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Jraef

Jraef

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infinity said:
It's a 10 amp load, no MaxOCPD rating, 20 amp circuit is code compliant.
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That's how I see it. MOCP is a term used when a SINGLE UNIT has multiple load devices inside of it, where the manufacturer calculates the value of the largest OCP device you can use. If you have single devices, each will just have a FLA or FLC or maybe a maximum wattage rating, not an MOCP.

So yes, it comes back to the earlier point raised; can you plug in 2 x 100W lamps to a 20A receptacle? Of course you can! The OCPD is there to protect the conductors, not the load device. It's incumbent on the device mfr to determine if the load device's internal wiring needs lower levels of protection or the inherent dangers of any failure mode, which is part of their UL listing process.
 
jumper

jumper

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infinity said:
It's a 10 amp load, no MaxOCPD rating, 20 amp circuit is code compliant.
Click to expand...

Jraef said:
That's how I see it. MOCP is a term used when a SINGLE UNIT has multiple load devices inside of it, where the manufacturer calculates the value of the largest OCP device you can use. If you have single devices, each will just have a FLA or FLC or maybe a maximum wattage rating, not an MOCP.

So yes, it comes back to the earlier point raised; can you plug in 2 x 100W lamps to a 20A receptacle? Of course you can! The OCPD is there to protect the conductors, not the load device. It's incumbent on the device mfr to determine if the load device's internal wiring needs lower levels of protection or the inherent dangers of any failure mode, which is part of their UL listing process.
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I agree, but the OP was answering me incorrectly. As long as he has his specs correct, no problem.
 
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de2

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Jraef said:
Yeah, I think when he responded that the MOCP was 10A, he was not understanding the nuance of what that meant, that MOCP is a defined term used as I described.
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I was texting on my phone I misunderstood. Yes, 10Amp is the spec that indicated FLA rating.

My question erected, there are multiple equipments in the restaurant project that I am working, that FLA's 3A, 5A, 6A, 10A. Loads are display case light or heating element.

I want to combine loads up to 12-13Amp on each branch circuit so I can put them together (20A OCPD to Junction Box and from Junction Box to each load) using #12 wire all the tap circuits.

But I know that when you have (3+3+4) 10 amp continuous load, 10*1.25=12.5A, next size up OCPD is 15A and I dont like 15A breaker in the distribution panels for commercial customers.

If my loads are (3+3+4+4) 14Amp non continous load than next size up still 15A breaker.

I want to go two next size up, and wire the loads.
 
infinity

infinity

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Unless specifically prohibited by the equipment all of these things can be combined and put on a 20 amp circuit.
 
jumper

jumper

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de2 said:
My question erected, there are multiple equipments in the restaurant project that I am working, that FLA's 3A, 5A, 6A, 10A. Loads are display case light or heating element.

I want to combine loads up to 12-13Amp on each branch circuit so I can put them together (20A OCPD to Junction Box and from Junction Box to each load) using #12 wire all the tap circuits.
Click to expand...

Multiple loads of that type can be combined and put on either a 15A or 20A, your choice.

Would have been a lot easier if you would’ve stated that info earlier when I asked......
 
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