I am working for a company where the owner has me installing a 600 amp service to a laundrymat. My question is he wants me to come from the supply side of severice to a fused disconnect, then a CT Cabinet, then the MDP. IS this even legal? I have always gone to the CT, Disconnect, MDP.
600am 3ph service
- Thread starter billq
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- Massachusetts
The NEC does not care what order it is but the power company will. Depending on the power company rules the CT can be before or after the service disconnect.
CT before the disconnect is called hot sequence metering
CT after the disconnect is called cold sequence metering.
CT before the disconnect is called hot sequence metering
CT after the disconnect is called cold sequence metering.
ty for your prompt reply. I have done quite a few of these, and with this particular Utility, and I have not seen this before, I have seen it when the Ct cabinet was inside the building. This is in Reading,PA and the local utility is MET-ED. I have been trying to find their specs online but I am having trouble
Finding it.
Finding it.
I believe the info you are after can be found here:https://www.firstenergycorp.com/Builders_and_Contractors/files/Form 115 (Rev 11 08).pdf. It is a 79 page document and, I'll be honest, since I live and work in colorado I did NOT bother reading the entire thing. It does appear to be the correct standards book for the area you are working in though. I found this by googling "MET-ED Reading PA".
Good Luck and be safe,
Good Luck and be safe,
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