2009年6月6日 · T&B does not make these or any panels any more as I have said they have dumped the line making panels, meter, mains, and meter, panels. So finding replacement parts, will be a major problem, changing panel guts with something that is not UL listed to be in this panel is setting up a for a law suit. not only next to imposable to get it to line up.

2016年5月11日 · The home with the T&B panel was built 16 years ago, so I would not describe it as ancient. T&B apparently got into the panel business, then rather quickly dropped the line, and shortly later dropped all listed breakers. The house is on Cape Cod, and the T&B panels were used there extensively while they were still available.

2010年9月22日 · This is a 240v Grounded B Phase sub panel in an older manufacturing facility. I am not familiar with this type of service. Any comments are welcome There are only 2 pole QO breakers used in this panel for A & C phases. If a three phase 240V circuit is needed, a two pole breaker is used for the...

2009年11月9日 · Grounded the B phase and but a big LABEL the panel and hooked up the new equipment, no problem. Did another one where the customer need 3 phase 575 V but only had 120/208 V. Installed a transformer 120/208 Y 3 phase to 575 3 phase delta. grounded the B phase again and but a big LABEL on the disconnect.

2020年10月2日 · Down stream of the panel the grounded phase is treated the same as the other phase conductors. The bonding/equipment grounding is a separate conductor to any loads. This set-up treats the grounded phase conductor, of the three phase system, similar to the neutral of any other system. I hope that this clarifies this.

2011年9月9日 · What is a good replacement panel for Sqd NEHB? I need something with a small footprint. I Line would be too big for the space that its in. It has one usable breaker in it, but I need two more 3 pole 20s. At 285 apiece at Relectric and that its obsolete, I could probably find something less...

2024年12月6日 · In your described scenario: • If the 100A MLO panel is fed with a 6-foot tap of #3 wire, and the tap complies with the rules of 240.21(B), it may be acceptable. • However, per 408.36, if this panel does not have an integrated main breaker, the overcurrent protection (100A) should be provided upstream.

2024年10月17日 · At an older house. The meter base is back to back with the interior panel. They ran it on a 2 wire system. Usually, when that's done, there is an option in the panel itself to install a green ground screw to bond the panel. But, it's not there on this panel There's no extra machined hole for bonding near the ground lugs.

2016年4月7日 · The panel serves roof top HVAC equipment that all has local disconnect switches. The distribution panel also can be disabled from a breaker on Tenant A's main switch board. Tenant B's electrician is claiming it is a code violation to have Tenant A's distribution panel in …

2011年8月10日 · Whats been done all ready is replacing the w/h. It needed changed anyways, was about 20 years old. Then making sure both wires going into the main breaker are secured. My next guess would be the main c/b itself (which is also probably about 20 years old). Another guy seems to think its the wiring going from the water heater to the inside c/b panel.