sliderule
Member
- Location
- Langley, BC
RVs are covered under art. 551 and the required allowance per 30 amp RV site is 3600 VA (and then there's the allowed derating for multiple sites on a feeder or for a service). I take this to mean that a 30 amp 120 volt RV can draw up to 30 amps continuously without having to derate anything to 80%?
A standard molded case breaker is designed to operate at up to it's rating for an indefinite period. But I believe there is a temp. limitation for breakers in an enclosure per UL 489 that may reduce it's continuous rating?
So the question is, is there anything that means that a 30 amp RV cannot or should not draw 30 amp continuously from an RV pedestal?
The thing is, there really is no way for an RV owner to monitor/control/limit their loads to 80% of the pedestal breaker rating anyway. Many 30 amp RV owners are operating 2 AC units plus other loads that are taxing a 30 amp breaker to the max for long periods of time.
The panels in RVs also have a 30 amp (1-pole) main breaker (or 2-pole 50 amps for a 50 amp RV) so I guess the same question would apply there too.
Thanks!
A standard molded case breaker is designed to operate at up to it's rating for an indefinite period. But I believe there is a temp. limitation for breakers in an enclosure per UL 489 that may reduce it's continuous rating?
So the question is, is there anything that means that a 30 amp RV cannot or should not draw 30 amp continuously from an RV pedestal?
The thing is, there really is no way for an RV owner to monitor/control/limit their loads to 80% of the pedestal breaker rating anyway. Many 30 amp RV owners are operating 2 AC units plus other loads that are taxing a 30 amp breaker to the max for long periods of time.
The panels in RVs also have a 30 amp (1-pole) main breaker (or 2-pole 50 amps for a 50 amp RV) so I guess the same question would apply there too.
Thanks!