I am up-grading my 100A service with a 200A one. My main panel is not
near the meter so I have a Siemens 200A service disconnect where the
power enters the basement. There are 4 "blades"(right name?) in the
disconnect box, two for each hot line. What troubles me is that the 200A
Siemens breaker that was sold with the disconnect (looks like four
regular breakers tied together so they all switch off at once) makes
contact with only two of the four blades, so that all the current must
go through only two blades when it seems a better design would be to
have all the current go through all four blades, less current per blade.
Do I have any real concerns here, is this a bad design, is this a
Thank you for any help.
Did your power company upgrade your service from 100A to 200A and was
inside wiring upgraded, or did you just get 200A disconnect and breaker
installed on 100A service, in which case using half of it makes sense.
You certainly cannot expect to draw 200A from a 100A supply or output 200A
into 100A inside wiring.
David Efflandt - All spam ignored http://www.de-srv.com /
I think I've seen the breakers you refer to at my local hardware store. Seems
funky to me too, but I
think it is cheaper to gang two 100A breakers together than to make a single
200A one. So in a 200A
house service you'd have 4 100A breakers divided into two groups of two paralled
this is a factory assembly, it may be that the paralleled breakers have an
internal connecting means
and just give the appearance of a single bus connection.
If you bought a 200A rated disconnect and it came with this type of breaker, it
However, I won't buy equipment using this approach when there are alternatives
at similar cost that
have a normal looking 200A double pole breaker.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.