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I read you loud and clear and will keep that present in my mind during discussions. That said, if the electrician did not run load calculations at time of service upgrade and sized the conductors for 180A, is that permitted?

Thanks, Wayne. You've really been great to me - and I appreciate your support. Your explanation of 310.12(C)'s existence is excellent and crystal clear to me. I couldn't agree with you more about needing to read (and think) more carefully. I'll let you know what progress I can make with the...

I am actually trying to get the electrician to upsize the 4/0 Al conductors to be what we believe would be compliant, as I don't think I should go hire a second electrician to do it. But... if I have a licensed electrician as well as the county electrical inspector telling me they are in...

The issue is that the county is saying there is no need to ever go beyond 4/0, regardless of my load calculation or measured loads. So, I don't know if I just let that liability sit on the county and assume I'm fine up to 200A on the existing conductors, or if I try to convince the inspector...

@wwhitney Last week I was finally able to have a conversation with the electrician who performed the service upgrade, and he was pretty adamant that the feeder conductors between meter socket and main disconnect should be 4/0 Al. His rational was that the last sentence of 310.12(B) reads "If no...

Thanks. Definitely noted on the corrosiveness of the water with copper.

Thanks, guys. Sounds like a drain is highly unlikely, and that was the part that would be a hassle, but need to happen now. She's working on picking out a couple options now, and looking like plumbing is nil and electrical isn’t anything special. Some of the ones I had looked at myself...

That is true - I have it in writing, and all I need. Though I'm thinking more about how broader humanity is impacted. I'm only mentioning the below rant, as I'd value your below input if you think there is a valid NEC PI submittal, coupled with a reach out to Xcel senior management. I awoke...

I think I've now dealt with 5 people at Xcel or their contractors that are not clear about it. You can hear it in their voice when talking to them. It seems that NEC and POCOs need to do something to add clarity. I awoke this morning thinking about that more... it seems like NEC should include a...

I realize that is an odd number for a single EVSE. I don’t actually have any EVSE yet :) but, as a condition of the permit I have to pre-wire or put in conduit. Since EVSEs seem to be going through their own evolution now (single breaker pool, load sharing, energy mgmt, etc) and we are a year...

Hoping you all can shed some very high level info on the topic of plumbed coffee makers for me. Admittedly, I'm not a coffee drinker, but my wife is. She doesn't have a plumbed coffee maker now, but as part of the remodel wants to be able to accommodate one in the future. She doesn't have one...

Yes, have definitely seen p. 45, and at the same time have people at Xcel who are unclear on that or stating to the contrary. My load calc didn't include any additional VA for the continuous element of the EVSEs, and when I looked at the service entrance conductor capacity, it was also not...

Hey Wayne (@wwhitney)! My POCO request has finally made it to a designer. They did some calcs and determined that the 25kVA is underspec'd for the 4 good size residences it feeds, and they are going to upgrade it to a 50kVA at their cost. I'm hopeful they are not undersizing that. They seem...

How fast do those cycle? I think the heater has to cycle off and on rapidly to adjust for the needed BTUs. I think the standard SCR control is up to 30 cycles per second. In this case, think about 750-1000 CFM of 5degreeF air inbound, and needing to modulate the heater to raise the temp by 50F...

I'm with Wayne. Looks like the insulation may even be damaged where it arced. If you know the breaker to kill to de-energize it, that might be a good idea. I'm not an electrician, but to my untrained eyes, looks like there may be a few things that are not compliant with current NEC (electrical...

Thanks, and good point. When I spoke with Stelpro and asked about some options to manage the current (versus single 50 Amp draw), they did tell me that they can build the heater with multiple stages. However, I'd have to provide controls. So, I'm assuming (and should verify), they cannot install...

First off, I'm not an electrician. PVC electrical conduit can be warmed with a torch (be careful... watch videos) and formed (many electricians have resistance based heaters that are purpose made), though I've the fumes can be strong - so think outdoors, possibly respirator. Flex conduit won't...

I see what you are saying. My gut says what will have the least overall impact, and what will have additional innovative solutions coming out will be shedding the 60+A for the EVSEs, and that would cover just about everything. Now, if I add more to that main later, potentially adding welder...

Yes, agreed, that the EMS would be monitoring the main feeders, and for purposes of this discussion I am assuming those have been upgraded to support 200A. I believe you on that. My intent right now is to make sure there is an EMS solution (provided load-monitoring-on-existing-dwelling doesn't...

The questions: 1) Given an instantaneous 50A load (makeup air heater), what is a reasonable tripping threshold to target for an energy management system overseeing a 200A OCPD? If it was set to 150A, then the EMS would not benefit me because it is not providing extra capacity. At 160%, it is...