My company has one work site that has outgrown its existing service.
Right now, the POCO has 3 phase, 200 amp, 250 volt service running down a utility pole, thru their Kw-hr meter, into our 400 amp TB. From the TB, the underground service wires run to 4 different buildings.
The manager wants to add a disconnect between the POCO meter & our TB; both for emergency isolation & because it just makes sense.
I asked the POCO Eng if he wanted to increase his service drop or CT the meter, but as of now, all that they will do is kill the power & lift the service mast off for me to install my new disconnect.
I could not find anywhere in the Code where it would require fuses, but I ordered a fused Disco anyway. I would rather blow a 400 amp fuse than ruin a 200' run of USE if there ever was a fault.
Is there any requirement to fuse that Disco?
ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!
The topics covered on this site include activities in which there exists the potential for serious injury
or death. ElectricianTalk.com DOES NOT guarantee the accuracy or completeness of any information contained
on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling