Adam De Lay
Solar Wizard
Leave the black where it's at and test the top of the Nader breaker.
EG4 6500EX Problem
- Thread starter vitalssigns
- Start date
EG4_Jarrett
Online Support Manager for EG4 Electronics
Are the breakers in the same position as they are in this photo? One off and one on? If they are both on and voltage is not being red at the top, but it's being read at the bottom, it could be a bad breaker or the breaker is installed upside down.
I bought a brand new breaker from the Electric Supply store in the town that I live in, and it was bad straight out of the box. It happens.
But it sounds like it was working at one point. So may not be the case.
vitalssigns
New Member
vitalssigns
New Member
Got to go back to work, I’m a driver for the USPS, time to pick up bulk mail
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Adam De Lay
Solar Wizard
vitalssigns
New Member
Both t class are both blown, on one side of rack only
EG4_Jarrett
Online Support Manager for EG4 Electronics
How did you power on the inverter after the initial start-up?
Gavin Stone
Solar Addict
He mentioned that he didn’t use the precharge resistors.
42OhmsPA
What's in a title?
That's what it looks like but you said you had voltage in the area circled in yellow?
What do mean "on one side of the rack only"?
Hopefully it's only the fuses, the inrush current when you turned things back on could have caused it but we want to be certain before you replace them and try again..
You also said you isolated the inverters and fed them AC power but they wouldn't power on, correct?
Thanks for keeping the mail flowing, I bet it can be a fun job most days and miserable a few times a year...
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vitalssigns
New Member
vitalssigns
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Did not fed ac power from the grid. Class t fuse is dead on one side and hot on the other. Tomorrow I will make sure I have a better connection, and retest.
42OhmsPA
What's in a title?
That means the fuse is blown. Do you have replacements? Do you know what model the fuse block is?
These may fit and would deliver quick but I can't guarantee they will fit your fuse block.
Blue Sea Systems Fuse JJN (Class T) 250 Amp 5118 - The Home Depot
Fast short circuit response makes this the best choice to protect high amperage electronics equipment such as inverters. 20,000 Amp Interrupt Capacity (AIC) UL rated for DC applications under UL189L. Product quality is managed in a manner consistent with international standards. Quality products...
www.homedepot.com
vitalssigns
New Member
200-300A T-Class Fuse (1X required for each 6500EX. The amazon listing stats that these T-class fuses are rated for 12V only. They are actually rated for 125VDC if you read the data sheet. By design, they could handle more than that. These are high quality fuses that will handle nearly any size LiFePO4 battery. This is what Will Posted YouTube channel.That means the fuse is blown. Do you have replacements? Do you know what model the fuse block is?
These may fit and would deliver quick but I can't guarantee they will fit your fuse block.
Again, we need to ensure the inrush current is what caused them to blow in the first place to rule out a potentially bigger issue.Blue Sea Systems Fuse JJN (Class T) 250 Amp 5118 - The Home Depot
Fast short circuit response makes this the best choice to protect high amperage electronics equipment such as inverters. 20,000 Amp Interrupt Capacity (AIC) UL rated for DC applications under UL189L. Product quality is managed in a manner consistent with international standards. Quality products...www.homedepot.com
Looking at one on Amazon-
Blue Sea Systems 5119 FUSE A3T (CLASS T) 300-AMP
They do go up to 400-AMP, I need to do more reading to see if it will fit the block. When I have my lay over today I’m going to bypass the fuse to the breaker to see if that was the issue, the fuse blowing. If not the fuse to continue the current from the batteries, if it doesn’t, the breaker is next in line as default.vitalssigns
New Member
vitalssigns
New Member
| Item model number | FBL-200 |
|---|
OffGridForGood
Catch, make or grow everything you can.
If I remember correctly, the 200's and lower are one size, but the 225's and larger (300, 350, 400) are bigger and fit a different fuse holder.
From Blue Sea - 200's and smaller are 1.67" centres, while the 225's up to 400 are 1.84" centre to centre (bolt space).
edit: I agree with 42Ohms PA comment:
From Blue Sea - 200's and smaller are 1.67" centres, while the 225's up to 400 are 1.84" centre to centre (bolt space).
edit: I agree with 42Ohms PA comment:
Last edited:
vitalssigns
New Member
Since I don’t have no “class T fuses” on hand this is what I did. I ran from the buss bar directly into the fuse box, on both sides so I could see if I could get current. When I went to the batteries to turn them on, the top one breaker on the battery flipped off, and I could smell smoke. So I turned the battery off and turned on the 2 blow it and the alarm red light comes on, on both of them .That means the fuse is blown. Do you have replacements? Do you know what model the fuse block is?
These may fit and would deliver quick but I can't guarantee they will fit your fuse block.
Again, we need to ensure the inrush current is what caused them to blow in the first place to rule out a potentially bigger issue.Blue Sea Systems Fuse JJN (Class T) 250 Amp 5118 - The Home Depot
Fast short circuit response makes this the best choice to protect high amperage electronics equipment such as inverters. 20,000 Amp Interrupt Capacity (AIC) UL rated for DC applications under UL189L. Product quality is managed in a manner consistent with international standards. Quality products...www.homedepot.com
I then turned the breaker box off and turned the batteries back on, all green lights, putting out current. I think the issue is with the breaker within the breaker box.
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Quattrohead
Solar Wizard
The problem is with one or both of your inverters not the breaker, the breaker is doing exactly what it is supposed to do.
Disconnect absolutely everything from both inverters except for the battery connections and then try each inverter on its own, make sure you have the displays plugged in so you can see if there is any life.
Also you should probably be using a precharge resistor, a regular 60 or 100 watt domestic light bulb is perfect for this as it will glow maybe half brightness at 48 volts and should slowly dim as the capacitors charge if there is no short circuit in the inverter.
Disconnect absolutely everything from both inverters except for the battery connections and then try each inverter on its own, make sure you have the displays plugged in so you can see if there is any life.
Also you should probably be using a precharge resistor, a regular 60 or 100 watt domestic light bulb is perfect for this as it will glow maybe half brightness at 48 volts and should slowly dim as the capacitors charge if there is no short circuit in the inverter.
vitalssigns
New Member
Ok, back to work. Tomorrow I work half day .
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