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#94848 08/15/05 09:39 PM
Joined: Mar 2003
Posts: 48
G
GTE Offline OP
Member
Inspector says that article 680.21(4) only applies to pool motors. If a pool heater is connected to this circuit it can not be fed with NM cable within the interior of a one fanily dwelling, it would have to be in conduit. Why would a heater make a difference?

2017 / 2014 NEC & Related Books and Study Guides
#94849 08/15/05 10:07 PM
Joined: Jul 2004
Posts: 9,654
Likes: 2
G
Member
The inspector is right. 680.21 does just apply to "motors". If you really want to argue with him, ask him to point out the section that specifically describes the wiring method to a "pool" heater.
The pipe rules are in 680.21 "motors", 680.23 "underwater luminaires" and 680.27(A)(2)"underwater speakers".

Heaters show in in 680.26 "bonding" but not in the branch circuit wiring articles as far as I can tell.


Greg Fretwell
#94850 08/15/05 11:46 PM
Joined: Jan 2004
Posts: 1,507
G
Member
Greg- Just a point of interest, the heater for a pool if located more that 5' from the pool is not required to be bonded unless it's an electric heater.


George Little
#94851 08/16/05 12:03 AM
Joined: Jul 2004
Posts: 9,654
Likes: 2
G
Member
If you had a pure gas heater or a solar heater I agree but most gas heaters have electrical loads and I think that makes them "electrical equipment".

680.26(B)(4) Electrical Equipment. Metal parts of electrical equipment associated with the pool water circulating system, ... shall be bonded


Greg Fretwell
#94852 08/16/05 08:04 AM
Joined: May 2005
Posts: 706
T
Member
The gas pool heaters I've seen have no electrical connection, just as a home gas water heater has no connection (unless there's a vent fan).

Dave

#94853 08/16/05 12:28 PM
Joined: Jul 2004
Posts: 9,654
Likes: 2
G
Member
Mine (Sta-Rite Max E Therm) has an electrical igniter, a blower and an electrical gas valve that is interlockled with the pool motor along with an interface to the pool control computer, if installed.
The instructions say it should be bonded.
A lug is provided for the purpose.


Greg Fretwell
#94854 08/16/05 06:03 PM
Joined: Jan 2004
Posts: 1,507
G
Member
Greg- 90% of the guys around here bond the heaters too, but if they don't I don't say anything unles they have electricity associated with them.

Question? Is a power pile system considered to be electric? I think I've become the inspector I used to dread when I was a contractor.


George Little
#94855 08/17/05 01:54 AM
Joined: Jun 2004
Posts: 24
R
Member
George
It speaks well of you that you're remembering your days of contracting and i'm sure that you're able to focus on true safety issues rather than the letter of the book and its most stringent interpretation.

#94856 08/17/05 01:57 AM
Joined: Jul 2004
Posts: 9,654
Likes: 2
G
Member
"Power pile system"?


Greg Fretwell
#94857 08/17/05 07:27 AM
Joined: Jan 2004
Posts: 1,507
G
Member
Greg a Power Pile system is a system that involves a gas valve and a millivolt operated pilot light safety. Hold the spring loaded button down and allow gas to flow to the pilot light and once the bimetal sensor probe (in the flame) is heated up it generates enough voltage (millivolts) to keep the pilot light solenoid energized and thus the main gas valve and associated thermostat will operate. Standing pilot goes out-and this would prevent the main valve from operating and no gas escapes or creates any hazard. Around these parts, this is refered to as a Power Pile system. Might be a slang expression.

I would not see this as an electric pool heater needing bonding but they bond it anyway.


George Little
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