I work in a Computer Center where each cabinet has 2- 20A circuits in each cabinet fed from diverse power sources fed from static switched Power distribution units so that in the event of a power failure to either source the load will be automatically switched to the opposite power source. My question is what is the maximum amperage available to the total circuit ( if one power source failed ) since the load could switch at any time due to a utility outage and therby carry the full load on one circuit. Each piece of equipment is dual power corded for redundancy in the event of a failure. Since this is computer gear does inrush current or steady state load have any bearing on the load since code says 16A for a 20A circuit ( combined ). Head office ( suits ) say we should load up to 10A on each side since it is not truely 20A until switched in an emergency. I disagree due to inrush current and over 16A for a short or possibly longer periods of time. but this is fairly vague in the code ( 96 ). Any help would be appreciated.