Do tables 310.16, 310.17, ... regarding current/wire size apply to AC and DC current? Is it permissable to use standard 20 amp AC circuit breakers for DC as well?
Do tables 310.16, 310.17, ... regarding current/wire size apply to AC and DC current? Is it permissable to use standard 20 amp AC circuit breakers for DC as well?
You have to look at the manufactures ratings as far as using a standard breaker on DC. For example most Square D QO breakers can be used on 48 vdc systems.