i want to intercept a subpanel with a transfer switch for a generator. the sub panel has a main in it for the branch circuits only. the disconnect for the subpanel is not within sight and more than 50 feet away. i do not want to put another disconnect switch in for the normal power of the transfer switch. can i do this?
2007-09-05 13:08:55 · 5 answers · asked by wife and the hubby 1 in Home & Garden ➔ Maintenance & Repairs
there is no disconnect sight rule for a sub-panel.that rule is for equipment such as HVAC units,water heater to name just a few.
also a sub-panel does not require a main breaker
Local code my differ but must be as good as or better than the NEC
Now to answer your question . YES
The transfer switch is also a disconnect.
House power.to sub-panel
Generator to sub-panel
Off or open no power to sub-panel
http://www.smps.us/transferswitch.html
Hope this helps
2007-09-08 04:03:11 · answer #1 · answered by greg w 3 · 0⤊ 0⤋
Sorry, I'd like to help you but your question is too confusing.
The way I read it is, the sub panel main disconnect is near or at the service entrance, which is 50 feet away. That's fine.
You want to put in a transfer switch so you can transfer the power from the service to a generator to feed the panel. Nothing wrong with that, so long as you put the transfer switch between the panel disconnect and the panel. Distance does not enter the picture.
I hope that helps.
2007-09-05 20:36:02 · answer #2 · answered by billy brite 6 · 0⤊ 0⤋
Get a transfer switch that detects normal power/emergency power automatically and that's all you need.
If you have a manual over ride transfer switch that will be fine too.
A disconnect box is pointless and is basically just a big on/off switch. It would just cut power off from everything.
Illustration:
[ Power from Street ] --->[existing disconnect] ---> [transfer switch] --> [ generator ] ---> [Panel / subpanel]
The above illustration if for a whole house example.
This second illustration is for applying to a subpanel with limited about of breakers which sounds like your scenario:
[Main Panel] ---> [Transfer Switch] --->[Generator] ---> [subpanel]
2007-09-05 20:29:53 · answer #3 · answered by Kris_B 3 · 0⤊ 0⤋
I can't really determine what your question is. What is intercepted? Why would you need a disconnect within sight of the transfer switch? That is a motor circuit rule in the USA. Where are you located? I think you should contact an electrician to come and help you.
2007-09-05 23:51:06 · answer #4 · answered by John himself 6 · 0⤊ 1⤋
The best thing is to contact your building code enforcement department.
2007-09-05 20:19:10 · answer #5 · answered by Stephen P 4 · 0⤊ 0⤋