The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
230 or 345 kV transmission lines?
by Vlado
09/24/16 09:33 AM
breaker meltdown
by crselectric
09/24/16 12:42 AM
Electrical mast flashing product
by ThomasWinfrey
09/22/16 12:14 AM
What estimating software do you recommend?
by sparky
09/21/16 07:20 PM
"Dry Run" Inspection goes awry
by HotLine1
09/20/16 07:39 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
HotLine1 18
sparky 9
gfretwell 9
sparky66wv 8
Vlado 6
Who's Online
0 registered (), 253 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Page 1 of 3 1 2 3 >
Topic Options
Rate This Topic
#196906 - 11/01/10 10:26 AM Re: New water heater
harold endean Offline
Member

Registered: 02/16/02
Posts: 2248
Loc: Boonton, NJ
Has anyone seen those brand new water heaters that are instantaneous and they need 3-40 amp feeds? What do you do about a disconnect within 50' and/or within eyesight?

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#196909 - 11/01/10 12:04 PM Re: New water heater [Re: harold endean]
KJay Offline
Member

Registered: 11/27/07
Posts: 763
Loc: MA, USA
I suppose they could pull a properly sized feeder and install a small subpanel to an area within sight of the equipment, then run the needed branch circuits to the water heater from there.
One thing though… I know that the SQD QO 6/12 circuit panels I have are only rated at 100A, so not sure if they are available with a higher ampere rating.
If not, then one possible problem might be if the feeder were sized only as needed for the water heater loads but, a larger panel was install installed because of the needed higher ampere rating. Someone else could come along later and run additional circuits out of it to feed other loads.

Top
#196915 - 11/01/10 03:24 PM Re: New water heater [Re: KJay]
crselectric Offline
Member

Registered: 09/24/06
Posts: 134
Loc: albany, ca
I'm working on the same thing, in richmond ca, trying to find a small robust panel on opposite side of wall in 1100 sq. ft house, and not have to put in a 20 space panel for 6 slots?

Top
#196916 - 11/01/10 04:01 PM Re: New water heater [Re: crselectric]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9012
Loc: Estero,Fl,usa
I saw some 6/12s on the SqD site but they are more expensive than a 20/40.
_________________________
Greg Fretwell

Top
#196925 - 11/01/10 05:56 PM Re: New water heater [Re: gfretwell]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6785
Loc: Brick, NJ USA
The OCP for the subpanel will prevent the feeder from OL. I seem to remember a GE panel that was 125 amp rated buss.
_________________________
John

Top
#196948 - 11/02/10 08:33 AM Re: New water heater [Re: HotLine1]
harold endean Offline
Member

Registered: 02/16/02
Posts: 2248
Loc: Boonton, NJ
How about a contactor in a small panel with a push button/switch by the heater?

How about a lock out on the service panel?

Top
#196954 - 11/02/10 10:57 AM Re: New water heater [Re: harold endean]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9012
Loc: Estero,Fl,usa
If you have a sub panel within sight of the water heater that can be your disconnect.
_________________________
Greg Fretwell

Top
#196965 - 11/02/10 09:26 PM Re: New water heater [Re: gfretwell]
Niko Offline
Member

Registered: 08/17/06
Posts: 358
Loc: Campbell, CA
Is that 3 separate heaters turning ON separate times, or all three turn ON at the same time?

I bet that will dim the lights every time it turns ON. Wouldn't that be annoying? Have you informed the customer on the possibility of the lights dimming?
_________________________
Be kind to your neighbor, he knows where you live


Top
#196969 - 11/03/10 06:35 AM Re: New water heater [Re: Niko]
harold endean Offline
Member

Registered: 02/16/02
Posts: 2248
Loc: Boonton, NJ
Greg,

I agree that if there is a sub panel or service panel within 50/eyesight, then we would meet the code. However the service is in the basement and the house is finished, and they install a new water heater in the laundry room, Now what? Could you accept a lockable breaker(s) for the disconnect? Install a sign on water heater stating that the heater has multiple feeds?

Top
#196972 - 11/03/10 11:44 AM Re: New water heater [Re: harold endean]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9012
Loc: Estero,Fl,usa
This might be the compelling reason to put the sub panel near the water heater.
I know the code allows lockable breakers, how many homeowners actually understand LOTO procedures or have the proper equipment?
_________________________
Greg Fretwell

Top
Page 1 of 3 1 2 3 >



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals