Is it okay to add a t class fuse after a 60v 200amp breaker from battery to inverter

tbaleno · Aug 20, 2022

I was planning to go from battery to bus bar with 4/0 then from bus bar to to the breaker using 2/0 then 2/0 from the breaker to fuse. then 2/0 from fuse to inverter.

As the title says, I'm wondering if I can put a t class fuse GFL fuse

Rated voltage: DC 80V / AC 100V
Two sizes currently available – 200A
Interrupting current capacity: DC 50,000 A / AC 100,000 A

And the breaker is the Nader DC circuit breaker 60v 200amp from signature solar.

time2roll · Aug 20, 2022

Yes the additional fuse can be added.

SolaroSsaurius · Nov 7, 2022

Sorry for the ignorance, but shouldn't fuses be placed as near as possible to the source / battery?
The way you described, the circuit from the battery to the fuse is not protected , right?

Mariner62 · Nov 12, 2022

SolaroSsaurius said:
Sorry for the ignorance, but shouldn't fuses be placed as near as possible to the source / battery?
The way you described, the circuit from the battery to the fuse is not protected , right?

I agree with this statement. The risk is probably low, but why not put the fuse adjacent to the battery and remove the risk.

MisterSandals · Nov 12, 2022

Mariner62 said:
I agree with this statement. The risk is probably low, but why not put the fuse adjacent to the battery and remove the risk.

I also agree. I would then re-evaluate the fuse and breaker sizes. Having a 100A fuse next to the battery and a 200A downstream does not make sense.

What inverter and what kind of loads are you planning to handle?

Mariner62 · Nov 12, 2022

MisterSandals said:
I also agree. I would then re-evaluate the fuse and breaker sizes. Having a 100A fuse next to the battery and a 200A downstream does not make sense.

200A ClassT makes sense. The breaker will pop before the fuse in minor over-current situations, which is better than melting the fuse.

Is it okay to add a t class fuse after a 60v 200amp breaker from battery to inverter

tbaleno

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time2roll

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MisterSandals

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