busman
Senior Member
- Location
- Northern Virginia
- Occupation
- Master Electrician / Electrical Engineer
All,
Without going into the weeds. Need to serve a single 400A load at 480V 3-phase. Customer wants some future capacity so I've specified a 600A MCB panelboard. But, this is being constructed in a Conex box and needs one of those wall mounted HVAC units (think Bard, Marvair, etc.). They usually need about a 30A OCPD. Can you think of any creative ways to feed this. Most panelboards what are 600A have about a 100A minimum OCPD that can be installed. I guess I could use 100A conductors for a short distance to a fused disconnect with 30A fuses. Any better ideas. Last resort is to install a second 480V panelboard at about 125A MLO that would take molded case circuit breakers.
As always, thanks for any help.
Mark
Without going into the weeds. Need to serve a single 400A load at 480V 3-phase. Customer wants some future capacity so I've specified a 600A MCB panelboard. But, this is being constructed in a Conex box and needs one of those wall mounted HVAC units (think Bard, Marvair, etc.). They usually need about a 30A OCPD. Can you think of any creative ways to feed this. Most panelboards what are 600A have about a 100A minimum OCPD that can be installed. I guess I could use 100A conductors for a short distance to a fused disconnect with 30A fuses. Any better ideas. Last resort is to install a second 480V panelboard at about 125A MLO that would take molded case circuit breakers.
As always, thanks for any help.
Mark