Recent content by anbm

7.2.2 old version allows EPSS equipment to be located in same room with normal power service equipment as long as double clearance is provided in front of EPSS equipment. I think this exception has been deleted per latest version of code.

I saw several details for parking lot light pole base, where they run #10 ground wire and tie to rod inside the pole base. Why do we need this ground wire and rod inside pole base? For lightning protection? If the circuit feeds this parking lot light has equipment ground wire, do we still need...

I like your last sentence, Don. Thanks!

Alehman and DonPhilips, thanks for quick reply. My boss told me that he will gives me a new project involving dada center, It rooms design to try. This is my first time to involve in this kind of building. I may have several questions later for you guys, i.e. any specific rules, NEC, building...

Any folks out there involved in Data center, IT room designs - power distribution and branch circuiting aspect?

I found it, digest book #174 page 9-20, HCM panel D option for door and F for flush mounted. Thanks all.

Even for distribution panel?

We plan to install I-line square D distribution panel (208/120V,3-Ph, 400A MCB) in a storage. The owner wants this panel to be flush mounted. My understand...if the distribution panel flush mounted, the breakers in panels shall be exposed. Is there a way we can protect people from accidentally...

If we have (2) separate 15kV feeders come into MV switchgear and (1) feeder comes out of this switchgear to feed a MV transfomer. Two comning feeders, each terminates in a 200A fused disconnect switch inside MV switchgear. Can these two fused disconnect switches be kirk-key interlock switches...

Morrand, You know any free online resource describing more details about ATO switch? Thanks!

ATO = auto transfer I think what I am looking for medium voltage interupter switch, is it rated at max. 1,200A for any medium voltage range?

Zogzog, I am from Dallas - Texas. can you point out which term is vague to you? (-:

I have little experience with medium voltage stuffs, I have these below questions hope you guys can clear my head. I appreciate that. We have a project where we run new 15kV feeder from existing manhole at site to new medium switch pad. From this switch pad, we come out with (2) separate feeds...

We have a physician office with has en emergency generator sering only fire pump, the owner wants to have other load from other building to be also fed out of this generator (if generator size can handle). Will this violate any code issues? Since the generator will serves two different buidlding...

Does anyone have any problem to comply wih these sections from NFPA-110? Thanks! 5.6.7.5 Power for fans and pumps on remote radiators and heat exchangers shall be supplied from a tap at the EPS output terminals or ahead of the first load circuit overcurrent protective device. 7.2.2* Level 1...