2016年4月27日 · It was brought to my attention that UL508A had a wire color code change in the 2013 edition. I have been told that the new edition states some drastic changes from the …

2008年2月26日 · So to your 10ft tap rule, UL would apply in the construction of the panel at your shop, not the NEC. But there is the same requirement in UL 508A to address that and …

2014年1月23日 · The UL 508A certification is given through inspection by a Nationally Recognized Testing Laboratory (NRTL). This UL label, classified as UL-508A, when applied to …

2013年3月7日 · Hello Guys, Im new to this forum and looking for some help. We are not a UL shop. We recently got a contract to build a UL 508a control panel. All of my components are …

2024年11月25日 · UL 508a does not provide any requirements for sizing transformers. Just like the NEC does not. There is no further clarification in UL 508a about what the simultaneous …

2021年4月15日 · Just when you think UL 508 is making sense to you, it's not. Hoping to use a Heyco flex NM liquidtight 1/2 conduit connector (#8402) on enclosure . Piece is UL Listed , but …

2016年2月2日 · UL used the same nomenclature, and essentially the same requirements as NEMA did, effectively replacing them. As far as I know, a UL type enclosure meets all the …

2021年7月2日 · I wanted to make sure i had this correct. what is the maximum branch circuit protection allowed for both the primary and secondary sides of a 1500 VA 480/120 volt single …

2009年1月25日 · They are evaluated under two separate UL Standards; 845 and 508A respectively. ... Well at least get a ...

2018年12月13日 · You can use a UL 489 breaker anywhere, but you cannot substitute a UL 489 breaker with a UL 1077 breaker. The UL 508 listing will be required for an assembly of …