# Age of this panel(square D) HELP **URL:** \ **Category:** Electrical Inspections\ **Created:** [July 6, 2011, 3:28pm UTC](https://forum.nachi.org/t/age-of-this-panel-square-d-help/60682 "2011-07-06T15:28:20Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![ebehrens](https://avatars.discourse-cdn.com/v4/letter/e/ed8c4c/32.png) [@ebehrens](https://forum.nachi.org/u/ebehrens)\ **Post date:** [July 6, 2011, 3:28pm UTC](https://forum.nachi.org/t/age-of-this-panel-square-d-help/60682/1 "2011-07-06T15:28:20Z")
Im doing a 4 point inspection and citizens in florida requires for a panel to be upgrade within the last 35 years. This panel was in the house when the moved in in 84. In order for it to be considered upgraded within 35 years it has to be a panel installed after 1976. I took a photo of the tag on the inside. It looks like it has a serial number inprinted( J09N1412) i think this is a serial(see photo) box cat no. q0b 4cm150RB. Series E-8 issue no B.2015 can any of this info tell me the date. Was it installed in the late 70’s. When did they start to use main breakers in panels? Thanks a bunch if anyone can help. Dating Panels is my weakest ability. Drives me crazy when its for a 4 point and I need to know if its 35 years or less PHOTOS ![IMAG0157.jpg](https://global.discourse-cdn.com/internachi/original/2X/f/ffe94161dc099434943744b5db5ca3111dec722b.jpeg) ![IMG_5816.JPG](https://global.discourse-cdn.com/internachi/original/2X/e/e45049b0bea6152870ad054670351a58821e58f5.jpeg) ![IMG_5829.JPG](https://global.discourse-cdn.com/internachi/original/2X/6/65391193e4dc4b25c4e71c56489b8a7d7c135d42.jpeg) ![IMAG0157.jpg](https://global.discourse-cdn.com/internachi/original/2X/f/ffe94161dc099434943744b5db5ca3111dec722b.jpeg) ![IMAG0157.jpg](https://global.discourse-cdn.com/internachi/original/2X/f/ffe94161dc099434943744b5db5ca3111dec722b.jpeg) ---
**Author:** ![jpope](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jpope/32/59425_2.png) [@jpope](https://forum.nachi.org/u/jpope)\ **Post date:** [July 6, 2011, 3:35pm UTC](https://forum.nachi.org/t/age-of-this-panel-square-d-help/60682/2 "2011-07-06T15:35:20Z")
Pick a forum and stick to it. There’s no need for multiple posts of the same question. > [@ebehrens](#): > > Dating Panels is my weakest ability. Drives me crazy when its for a 4 point and I need to know if its 35 years or less > [@On another topic](https://forum.nachi.org/t/60681/2): > > “Dating” panels based on serial numbers is nearly impossible, and woefully inaccurate. A “20 year old” panel can be installed in new construction. > > You will need to learn (through experience) how to tell whether the panel has been upgraded, based on its condition and other contributing factors. > > The panel you have pictured dates back to the early 60’s, but could have been installed in the early 70’s. What year was the house built? Based on my experience, I would guess this is an original panel. ---
**Author:** ![ebehrens](https://avatars.discourse-cdn.com/v4/letter/e/ed8c4c/32.png) [@ebehrens](https://forum.nachi.org/u/ebehrens)\ **Post date:** [July 6, 2011, 3:42pm UTC](https://forum.nachi.org/t/age-of-this-panel-square-d-help/60682/3 "2011-07-06T15:42:07Z")
sorry about that, I’m new to the forum and was not aware of who can view the members only portion so I thought I would post it outside of it incase a non-member can help. Wont do again ---
**Author:** ![rmeier2](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rmeier2/32/59909_2.png) [@rmeier2](https://forum.nachi.org/u/rmeier2)\ **Post date:** [July 6, 2011, 7:12pm UTC](https://forum.nachi.org/t/age-of-this-panel-square-d-help/60682/4 "2011-07-06T19:12:36Z")
Take a look here: [http://static.schneider-electric.us/docs/Electrical%20Distribution/Combination%20Service%20Entrance%20Devices/0110PD9201.pdf](http://static.schneider-electric.us/docs/Electrical%20Distribution/Combination%20Service%20Entrance%20Devices/0110PD9201.pdf) Looks like Sept 9,1983 ---
**Author:** ![jpope](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jpope/32/59425_2.png) [@jpope](https://forum.nachi.org/u/jpope)\ **Post date:** [July 6, 2011, 7:43pm UTC](https://forum.nachi.org/t/age-of-this-panel-square-d-help/60682/5 "2011-07-06T19:43:02Z")
> [@ebehrens](#): > > sorry about that, I’m new to the forum and was not aware of who can view the members only portion so I thought I would post it outside of it incase a non-member can help. Wont do again Posting in the appropriate technical forum (such as here in the electrical forum) will give you the most exposure. The Members Only sections have a limited number of viewers. ---
**Author:** ![jjonas](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/jjonas/32/301755_2.png) [@jjonas](https://forum.nachi.org/u/jjonas)\ **Post date:** [July 7, 2011, 4:41am UTC](https://forum.nachi.org/t/age-of-this-panel-square-d-help/60682/6 "2011-07-07T04:41:38Z")
> [@ebehrens](#): > > sorry about that, I’m new to the forum and was not aware of who can view the members only portion so I thought I would post it outside of it incase a non-member can help. Wont do again As Jeff said. If you post in the appropriate section, the people that are knowledgeable in those categories will respond, and you usually will get better responses. Example: non-member sparkies don’t usually hang out in the plumbing section.