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VT taps from MSP

VT taps from MSP

VT taps from MSP

In a new residence being planned, we'll have a:

"MSP Meter/Main Service Panel 200A 277/480V 3PH 4W"

that will feed a 200A 3ph/4W transfer switch; choosing between the grid above and a backup source. We have no need for any loads on the PG&E side of the transfer switch, save one: VT's & a loss-of-phase detector.

The licensed electrician has indicated 200A 480V MSPs are not available with distribution, so a panelboard will have to be added between the MSP and ATS 1.

...just to tap off a few VA for the VT's.

My question is: is there an alternative? A 3-fuse fuseholder or such that's approved for this kind of application? I was thinking such would be fed with ~18G Teflon wire, so that worst case, you get a suddenly-hollow piece of Teflon tubing, and copper vapor deposited on the MSP's walls. [Been there, seen that....]


RE: VT taps from MSP


Suggest you move post to the Electric Power, Transmission, Distribution forum.  It's not really an IEEE question, more of NEC.

Click here:


Good on ya,

Goober Dave

RE: VT taps from MSP

Thanks; have wondered why there's not a NEC forum....

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