You’re right, the JP cannot be supplied from or downstream of the controller, I didn’t mean to imply you can as that’s all spelled out in Article 695.3. But you can definitely supply it with the same dedicated circuit as the main pump if you tap ahead of the controller. The question on the table is whether a separate circuit of a different current is appropriate or necessary since Brian included a JP rated for the same current as the FP. So the electrician’s response that he “can’t” provide a conforming power supply that matches the JP is gibberish, assuming there’s a 460/3 ph in the pump room.
Steve L. From: AKS-Gmail-IMAP <[email protected]> Sent: Friday, January 19, 2024 2:18 PM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: Phase Converter The way I understood it, the NEC does not permit using the fire pump control panel as a junction box. Any tap to the electrical power conductors leading into the fire pump control panel used for powering the jockey pump is using the control panel as a junction box. On Jan 19, 2024, at 11:42 AM, Steve Leyton <[email protected]<mailto:[email protected]>> wrote: This industry can be a roller coaster of challenges and rewards, and also brings those occasional scenarios that can (perhaps should) render you speechless. For me, some of the most entertaining moments have been when someone stridently insists that we “can’t” do something that’s been a common, even standard practice for years… Steve L. From: Brian Harris <[email protected]<mailto:[email protected]>> Sent: Friday, January 19, 2024 5:06 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]<mailto:[email protected]>> Subject: [Sprinklerforum] Re: Phase Converter Matt- We’ve asked that same question and the electrician insist he can’t do that. Thank you, Brian Harris, CET BVS Systems Inc. From: [email protected]<mailto:[email protected]> <[email protected]<mailto:[email protected]>> Sent: Friday, January 19, 2024 8:03 AM To: [email protected]<mailto:[email protected]> Subject: [Sprinklerforum] Re: Phase Converter Can they not just piggy-back from the Main Fire Pump panel? I had always thought with the Fire Pump power being SUSE rated, that that is what they have always done. Hence the reason the Jockey Pump ratings always matched the Fire Pumps. R/ Matt Please rate our customer service<https://survey.medallia.com/?emailsignature&fc=3539&bg=Fire%20and%20Fabrication> Matthew J. Willis, CWBSP, CET Engineering Manager – Southwest Region FERGUSON FIRE DESIGN, LLC A Wholly Owned Subsidiary of Ferguson Fire & Fabrication, LLC 3508 Hwy. 557 West Monroe, LA. 71292 C: 307-236-8249 [email protected]<mailto:[email protected]> www.FergusonFire.com<http://www.fergusonfire.com/> From: Brian Harris <[email protected]<mailto:[email protected]>> Sent: Friday, January 19, 2024 6:59 AM To: [email protected]<mailto:[email protected]> Subject: [Sprinklerforum] Phase Converter Caution: This email originated from outside of the organization. DO NOT click links or open attachments unless you recognize and trust the sender. ________________________________ We have a job with a fire pump. Electrician ran 3-phase/460v for the main pump but not for the jockey pump. They’re asking if using a phase converter is an option instead of ordering a single-phase jockey pump. Anyone have experience with this? Thank you, Brian Harris, CET BVS Systems Inc. bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935 _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]<mailto:[email protected]>
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