junction box near heating oil tank

w0lley32May 2, 2011

Hi! My parents just had their heating oil tank replaced in their basement, but while removing the old tank, the heating company knicked a 14-2 cable that runs in the wall, just above the tank. Can I just cut the cable and install a junction box wherever I find convenient and make it accessible, or because it would be over a tank of combustible do I need to make my juction box some distance away from the tank?

I would prefer replacing the entire length of cable, but the other end is not easily accessible without damaging the walls. Thanks.

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bus_driver

Proximity to the tank is not a concern.

    Bookmark   May 2, 2011 at 6:50PM
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brickeyee

"Can I just cut the cable and install a junction box..."

It is not that simple.

You will not have the required wire length unless you replace a section of the cable, or use two boxes with additional cable added between them.

    Bookmark   May 2, 2011 at 8:54PM
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w0lley32

Thanks for your replies. Fortunately for me, the cable was kind of bundled up in that corner, so I have about two feet of slack to work with, more than enough to ensure that 8 inches of cable enter the box on each side. My only concern was the proximity to the oil tank.

    Bookmark   May 3, 2011 at 5:44PM
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brickeyee

If the tank is creating vapors that are flammable proximity to a JB is the least of your worries.

Having some slack is handy, if not always attractive.

    Bookmark   May 3, 2011 at 5:58PM
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ken_mce

If it's fuel oil, the fumes are not that flammable.

    Bookmark   May 3, 2011 at 10:38PM
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brickeyee

"If it's fuel oil, the fumes are not that flammable."

Harder to ignite, but still flammable.

The spark in the injector gun has no problem.

    Bookmark   May 4, 2011 at 9:31AM
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bus_driver

So we do not become distracted, an indoor tank must be vented to the outside. Any fuel oil fumes inside would be intolerable to the occupants. A junction box does not create any spark or release any spark energy unless there is a problem with the contained splices.

    Bookmark   May 4, 2011 at 4:46PM
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brickeyee

Like I initially said, "If the tank is creating vapors that are flammable proximity to a JB is the least of your worries."

The system is set up to prevent actual vapors from being present inside the house, and correctly installed connections do not produce sparks.

    Bookmark   May 4, 2011 at 4:52PM
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petey_racer

Fuel oil is flammable, NOT combustible.

    Bookmark   August 6, 2012 at 10:30PM
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