[RE-wrenches] Supply Side Tap Overcurrent Protection

[Dave Palumbo]

Wrenches,

 

I am tasked with reviewing an installation by a licensed electrician in
Vermont and would like help with the following:

 

Grid-tied PV system with battery back-up. AC point of connection is a supply
side tap (done on customer side of utility meter ) then traveling 5 feet of
#2 THHWN in 1" EMT to the 60 Amp 240vac Lockable Utility Disconnect
(unfused) and continuing 15 feet #2 THHWN 1" EMT to Xantrex XW 60 Amp
breaker. 

 

I had said that the 60amp 240vac lockable disconnect needed to be fused, and
received the following reply from the installing electrician.

 

<< "The Xantrex XW Power Distribution Panel contains the required over
current protection (60 amp

double pole circuit breaker) negating the need for a redundant fuse at the
Utility Disconnect switch." >>

 

I am on a short trip in Florida and away from my code books. Can someone
provide guidance and code reference please? I am concerned about the 20 foot
distance of the un-protected circuit from the supply side tap and also the
interrupt rating of the 60 Amp breaker in the Xantrex distribution panel.

 

David Palumbo

Independent Power LLC

Offices in Lamoille and the Champlain Valley

802.888.7194 

www.independentpowerllc.com 

 

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