Question about ABB S272-k16 2-pole Miniature Circuit Breaker
I am installing photovoltaic systems. However, there are some households with cramped panelboards. I need to know if it is possible to backfeed power with miniature circuit breakers.
If so, which breakers can I use? Any double pole that doesn't specify line or load?
Some help would be great.
I'm not up to date on PV systems so i will answer what i can about your question. The NEC applies to these installations so i hope you are familiar.
If the dc-ac inverter puts out 2 phase power then yes any two pole breaker rated for the amperage you are putting out would be fine. If the inverter puts out 120 then any single pole breaker will work.
That i know of, there are no 2 pole miniature or two handle breakers. There are breakers with two handles on them but they are tied to the same phase. the only thing i can think you may do would be to put a two handle single pole breaker in place of a regular breaker and then the one below it also. Then hook one leg off your inverter to one of the handles on the top breaker and the other leg to the bottom breaker.
Breakers do not have a line and load per say. The screw where wires are hoooked to is the load side of the automatic trip in the breaker however. The line would be where the breaker hooks to the bus bar but you can't really hook to that anyhow.
I would ensure what you do is up to code. There are safety issues involved. i assume you know your job though so i will leave it at that :) Hope this helped, write back if you feel i misunderstood.
Posted on Apr 05, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 04, 2017 | Green Living
Oct 30, 2016 | Water Water Heaters
Aug 18, 2015 | Miscellaneous
Mar 18, 2013 | Square D Electrical Supplies
Dec 03, 2012 | Computers & Internet
Mar 20, 2011 | Eaton Corporation GFCB120 GFI Circuit...
Jun 19, 2009 | ABB S272-k16 2-pole Miniature Circuit...
Jun 27, 2017 | Electrical Supplies
430 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: