120% rule for busbar rating for a meter socket load center

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wwhitney said:
So approximately what does a Siemens 3VA61105HL262AA0 go for? That's 2 pole, 100A, 100% rated; or change to HL3 if they are only made in 3 pole, or change HL to a different trip unit if that's cheaper.

Along with the enclosure 3VAE250N3R? Which is almost 32" x 10" x 6", as the 250A frame size use the same enclosure.

Cheers, Wayne
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Yeah who knows, probably would need to get a price from siemens. This stuff can be incredibly expensive when you buy breakers from the manufacturer without a panelboard. Enclosed circuit breakers too. 22 months ago i got a quote for a siemens 600A LXD frame with NEMA 1 enclosure: E1SLXD63B600 - $8300.00/ea
 
electrofelon said:
Underground and overhead service conductors do not have the 125% requirement, but service entrance conductors do. See 230.42.
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Is there a difference between a service conductor and a service entrance conductor?
 
ggunn said:
Is there a difference between a service conductor and a service entrance conductor?
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Yes, see the definitions in Chapter 1. Roughly, the service entrance conductors are only in the immediate vicinity of the building. So if the service point is remote from the building, then you have service conductors (overhead or underground) that are not service entrance conductors.

Cheers, Wayne
 
Carultch said:
Few (if any) fuses are 100% rated. Most are standard (80%) rated. I've seen breaker equipment and unfused disconnects listed for continuous duty, but not fuses.
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Many Class L fusible switches (800A and larger) are often available with 100% ratings.
 
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