Honeywell generator T1 terminal

B

Brownetown

Member
Location
Va
Occupation
Electrican
Recently ran across an older Eaton ATS/load center. Had the 240v sensing wires and 2 low voltage transfer terminal blocks. Long story short it didn’t have the normal T1 terminal for battery charger. Genartor is a honey well older model as well. My question is to get a 120v to the battery charger, I should jumper of normal power load side correct this way there is always 120v going to battery charger?
 
Brownetown said:
Recently ran across an older Eaton ATS/load center. Had the 240v sensing wires and 2 low voltage transfer terminal blocks. Long story short it didn’t have the normal T1 terminal for battery charger. Genartor is a honey well older model as well. My question is to get a 120v to the battery charger, I should jumper of normal power load side correct this way there is always 120v going to battery charger?
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Have you verified that it does not in fact have battery charging currently?

You can’t tap the utility feed for a battery charger, because as soon as you have utility power loss, you lose battery charging. After about a day or half day, the generator quits. I’ve revamped a few of these, mostly Kohlers, where the installer didn’t understand that.
 
Seven-Delta-FortyOne said:
Have you verified that it does not in fact have battery charging currently?

You can’t tap the utility feed for a battery charger, because as soon as you have utility power loss, you lose battery charging. After about a day or half day, the generator quits. I’ve revamped a few of these, mostly Kohlers, where the installer didn’t understand that.
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Yes, if the generator is not running, the battery will discharge. Loss of utility sense automatically starts the generator. If the generator does not start, the battery will eventually die.
 
hillbilly1 said:
Like most generators, there is an onboard alternator that keeps the battery charged when the generator is running.
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I know new Generac/Honeywell and Kohler don’t have alternators. All battery charging is from the AC side.

How long ago were they putting alternators in generators? I don’t have a ton of experience with older units.
 
IMG_7269.jpeg

This is how I had to do a Kohler the other day. No good place to pull a charge circuit, so I had to install a 125 amp panel for a single 20A charge circuit. 😡
 
The water cooled (residential) Kohlers I put in have breakers built into the transferswitch for the charger and block heater. The Cummins/Onan air cooled I have to get a circuit from the panel or mount a fuse block in the transfer switch if that’s not an option.
 
I think there is a breaker kit available for that ATS but we just put one of those black Bussman cigar fuse holders and a 15 amp cigar fuse in the ATS somewhere convenient.

You definitely picked hard mode there.

Seven-Delta-FortyOne said:
View attachment 2578083

This is how I had to do a Kohler the other day. No good place to pull a charge circuit, so I had to install a 125 amp panel for a single 20A charge circuit. 😡
Click to expand...
 
Seven-Delta-FortyOne said:
I know new Generac/Honeywell and Kohler don’t have alternators. All battery charging is from the AC side.

How long ago were they putting alternators in generators? I don’t have a ton of experience with older units.
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The old boxy tan ones had an additional winding on the generator that put out about 19 volts AC and powered the on board battery charger via a relay when it was running.

When it was not running, the battery charger 19 volts AC came off a transformer from N1/N2.

When the ones with a display appeared, they had a black brick battery charger. The Nexus had a battery charger built in the controller.
 
Birken Vogt said:
I think there is a breaker kit available for that ATS but we just put one of those black Bussman cigar fuse holders and a 15 amp cigar fuse in the ATS somewhere convenient.

You definitely picked hard mode there.
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Yeah I know. 😂

I tried to find an online fuse and fuse holder, and no one had it locally. Also, I’m not sure if those lugs are approved for two wires. I’ve seen a lot where the installer just added a #12 solid under the customer feed lug with an inline fuse. It works fine, just not sure if it’s approved.

I install for a local Kohler and Generac dealer here, and many times they call me after they have already sold a unit and ATS to a customer. If they had called me earlier, I could have spec’d different products and made it easier on myself. Oh well.

I know some of the Kohler ATS have breakers for the charger and heater, and I asked them to start selling those ones. We’ll see how it goes. 👍
 
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