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Old 04-04-2016, 10:06 PM   #1
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Default Are conduit bodies a fire hazard?

A co worker of mine told me that LB conduit bodies are the number one cause of electrical fires on photovoltaic systems. Primarily on the dc conductors. Has anyone else heard of this? I can't find any information regarding this potential fire hazard.
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Old 04-04-2016, 10:25 PM   #2
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What was his logic??

Interestingly, I heard driving a car is the number one cause of gall stones.
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Old 04-04-2016, 10:39 PM   #3
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Sounds like nonsense. I have seen 600 volts DC feeding lights in some train stations and they are in 1 rigid conduit and have LB, LL,LR and C fittings and they have never created fires.

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Old 04-04-2016, 10:40 PM   #4
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Originally Posted by Kedgren View Post
A co worker of mine told me that LB conduit bodies are the number one cause of electrical fires on photovoltaic systems. Primarily on the dc conductors. Has anyone else heard of this? I can't find any information regarding this potential fire hazard.
only if they forgot to ream the conduit or install bushings,

the primary cause of fires in pv systems is using undersized or incorrect wire.
wire needs to be rated for dc
although the voltage is lower, the current is much higher than higher voltage ac circuits
many tend to forget the conduit fill rules and use conduit too small
conduits should never be painted as it can cause heat retention and insulation breakdown.
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Old 04-04-2016, 10:49 PM   #5
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I've noticed, over the years, some "co-workers" are full of fertilizer.
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Old 06-15-2016, 11:19 AM   #6
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A co worker of mine told me that LB conduit bodies are the number one cause of electrical fires on photovoltaic systems. Primarily on the dc conductors. Has anyone else heard of this? I can't find any information regarding this potential fire hazard.
The only reason there would be a hazard is using rigid wire and making square bends go to stranded wire that is in manufacturing. Heat will not go around square bends and will cause a premature breakdown of insulation.
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Old 06-15-2016, 11:36 AM   #7
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I think the number one cause of fire on photovoltaic systems is photovoltaic panels. ................. .. . ... It's deep.
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Old 06-15-2016, 11:51 AM   #8
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I thought it was 1/2 conduit?
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Old 06-15-2016, 03:02 PM   #9
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I thought it was 1/2 conduit?
Yes poor installation but rocks and bullets baseball size hail don't help either. Not to mention rodents.
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