turtlepokerman
Member
- Location
- Omaha
Greetings,
Is it acceptable to have secondary only protection for a 480V-24Vac (2-Wire) 300VA transformer? The transformer has a built-in circuit breaker wired to the secondary (24V) side of the transformer. It feeds control circuits. I believe that 450.3 applies, but I'm not sure if there is something out there that would give an exception to this rule. I thought possibly Article 725, but can't find anything on the topic.
The transformer is fed from the primary of a fused disconnect switch (Tap-Rule).
All help is appreciated.
Is it acceptable to have secondary only protection for a 480V-24Vac (2-Wire) 300VA transformer? The transformer has a built-in circuit breaker wired to the secondary (24V) side of the transformer. It feeds control circuits. I believe that 450.3 applies, but I'm not sure if there is something out there that would give an exception to this rule. I thought possibly Article 725, but can't find anything on the topic.
The transformer is fed from the primary of a fused disconnect switch (Tap-Rule).
All help is appreciated.