need some advice

Status
Not open for further replies.
S

southernboys

Senior Member
hey guys buddy of mine just bought an instant water heater. the questions I have are its rated for 55 amps so Im going to pull 6-2 to the unit put it on a 60a breaker. Do they make a 60a plug that I can use as my within sight disconect. his water heater is located in his kitchen so trying not to put a subpanel in. also the previous owner built a roof on top of the existing roof so no attic space. I plan on running uf or nm through the rafter outside that are hidden by vinyl siding however I have to turn down the side of his house to get to where his water heater is located. Im wondering does this by code have to be ran in conduit or can it free wire if I follow the contour of his house. If I have to run it in conduit can you guys sugest a way to pull it through 20 ft of conduit with 2 90s and a saddle in it thinking pvc conduit here. also what size conduit would you guys use or would you mount 2 jboxes one abovbe the vinyl siding and one in the wall and pull thwn between those 2 boxes and flex back out with nm or uf thanks
 
Re: need some advice

george scary thing thats me in a calm mood hate for you to see me on a ruff wide *** open 8 hours a day. He reakky doesnt want a disconect and also if I hardwire the water heater it would void the warranty its unreal
 
Re: need some advice

allen please enlighten me I thought se cable was used solely as the service wire. How can I legally use this to feed a water heater?
 
Re: need some advice

I wouldn't use a 60 amp plug for the disconnet with out a switch. 10 amps is the max to disconnect under load.
Section 338.10 (2) Grounded Conductor Not Insulated. Type SE service-entrance cable shall be permitted for use where the insulated conductors are used for circuit wiring and the uninsulated conductor is used only for equipment grounding purposes.
For copper:
6/2 NM is rated 55 amps - 60 deg
6/2 SE is rated 65 amps - 75 deg
See 334.80
 
Re: need some advice

jw its one of those instaheat type. it comes with a 6/2 coming out of the unit and my buddy doesnt want to put a subpanel or disconect at the unit since it is in his kitchen heck he wants to hide the unit itself
 
Re: need some advice

i inspected one the other day that had 4 60 amp circuit going to it.
why not hard wire it and add a breaker lock off at the panel.
 
Re: need some advice

allen please enlighten me I thought se cable was used solely as the service wire. How can I legally use this to feed a water heater?

i hope you was just kidding.
 
Re: need some advice

Originally posted by tom baker:

For copper:
6/2 NM is rated 55 amps - 60 deg
Click to expand...
240.4(B) The next higher standard overcurrent device rating (Above the ampacity of the conductors being protected) shall be permitted to be used, providing all of the following conditions are met:

It lists 3 conditions, and none of them would apply to this situation.

240.6 lists standard breaker sizes .....40, 45,50,60...

The next higher breaker is a 60.

:)
Dave
 
Re: need some advice

Yes, SE is permitted, but not required since 240.4(B) allows a 60 amp breaker on the 6/2 nm.

Dave
 
Re: need some advice

that is the reason you would use a lock off if it was over 50 feet or out of site.
otherwise if it is within 50 feet and in site then you arent requied to have a lock off.

[ June 03, 2005, 11:43 AM: Message edited by: hess ]
 
Status
Not open for further replies.
Top