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dashco

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I would like to install a service rated (200amp) Manual Transfer switch at my residence. The switch has a manual lockout so that the utility power cannot
interconnect with the generator power. The generator is a portable with
50 amp overcurrent protection. I would roll it out of my garage(10') and connect it to the generator and MTS. The overcurrent at the MTS is 50 amps. In Article 702.5 It states the user can select the load connected to the system. It also uses the phrase intended to be operated at one time.
It is my intention to connect the load as needed.
I would like to leave my main panel in the house connected to the MTS.
The generator is rated at 17.5 and states that it can start up a 5 ton AC.
I have overcurrent protection at the generator.
I have overcurrent protection at the MTS.
I maintain my branch circuit overcurrent protection.
I want to submit this to permitting. Do you forsee any issues
 
Looks ok to me at first reading, but I am not certain I have the complete picture in mind.

Just to make sure I understand your proposal, where will this MTS be installed, with respect to the utility meter and the building's main disconnecting means? It is the utility's wire, or your property's wire, that you will have to disconnect, in order to insert the MTS? Also, will the MTS switch the neutral?
 
As a follow-on to Charlie's question re: does the MTS switch the neutral ...

1) Can the GENSET's neutral conductor be isolated from the GENSET's frame/ground? (which is what you'll need to do if your MTS doesn't switch the neutral)

2) Are you running 4 conductors from the GENSET to the MTS? (L1, L2, N, EGC)

3) Where is -- or rather where will -- your main bonding jumper be located?

Here's Mike Holt's "generic" non-SDS GENSET system diagram:

image1.PNG


Jim
 
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