14-50 y type splitter

[drotto25]

I know it would significantly slow charging time, but has anyone used one of these to charge 2 Tesla? Is it doable? What changes need to be done to do it safely?

I am thinking lowering the onboard charging to 16 amps would be enough, but is there anything else needed?

 

[silverstoned83]

I know it would significantly slow charging time, but has anyone used one of these to charge 2 Tesla? Is it doable? What changes need to be done to do it safely?

I am thinking lowering the onboard charging to 16 amps would be enough, but is there anything else needed?

Did you find a product that actually does this? I ask because that is a fire hazard based on what you described, even if you’re reducing the charge rate.

Unless you have two chargers that have built in power sharing capabilities, the only way to safely use two EV chargers simultaneously is by having them plugged into separate circuits.

 

[LNL_HUTZ]

I agree with @silverstoned83

I have zero expertise, but you might be better off scheduling the cars to charge consecutively and not concurrently (of course, you could just switch the plug over).

 

[Webeevdrivers]

Consider this device for sharing the 14-50.

NeoCharge 240V smart splitter allows extra EV charging without expensive wiring - Electrek

Or google dryer buddy.

 

[jcanoe]

Just the photograph of the NeoCharge 240V smart splitter is enough to make me cringe. You never want to have any EV charging station cord set, i.e. the Tesla Mobile Connector, hanging unsupported from just the power outlet via the power cord pigtail. Always install a hook or a bracket, something to take the weight of the electronics unit and the charging cord off of the power plug and the electrical outlet. The photo is doubly dubious as the weight of (2) mobile connectors and the NeoCharge device is all being loaded on the NEMA 14-50 receptacle. No! Don't ever do this.

Other viable options include:

Install 2 Wall Connectors (hard wired to a dedicated 230V circuit) then set them up to distribute the load. The wall connectors must be installed so that the 18ft charging cords can reach the charging port of both vehicle .

Install a third-party electric vehicle charging station designed to support dual charging; i.s. ClipperCreek Share2 enabled EVSE enables (2) charging cord sets to share a single 230V circuit. Also available as a single charging station with dual charging cords; plug or hard wired. Would require using the Tesla J1772 adapter; (2) adapters would be required.

 

[Gizmotoy]

Consider this device for sharing the 14-50.

NeoCharge 240V smart splitter allows extra EV charging without expensive wiring - Electrek

Or google dryer buddy.

I have a Neocharge to share a dryer with an EV, so can't comment on the 14-50 sharing specifically, but I've been impressed. It's UL rated, and seems well-constructed.

I've had two Dryer Buddies, and would not suggest anyone buy one. They're not UL rated and I don't think they're up to the task of even charging at 24A. My first one started to melt down (casing literally melted), so I sent it back for replacement under warranty. The replacement failed even more spectacularly, and it started smoking. The inside had severely overheated and looked likely to have caught on fire if I hadn't been right there. Fortunately I was dubious based on prior performance.

Just the photograph of the NeoCharge 240V smart splitter is enough to make me cringe. You never want to have any EV charging station cord set, i.e. the Tesla Mobile Connector, hanging unsupported from just the power outlet via the power cord pigtail. Always install a hook or a bracket, something to take the weight of the electronics unit and the charging cord off of the power plug and the electrical outlet. The photo is doubly dubious as the weight of (2) mobile connectors and the NeoCharge device is all being loaded on the NEMA 14-50 receptacle. No! Don't ever do this.

Was that Elektrek's photo, maybe? The official photos don't show anything like the one in that article. Yeah, you definitely want the UMCs supported. I gave mine a little shelf. Your (2) here is not accurate, though: NeoCharge has a bracket that anchors it to the receptacle housing. Once the bracket is installed it can't pull out of the receptacle and there shouldn't be any weight on blades. You should still support your UMC, though.

 

[captanzuelo]

I've had two Dryer Buddies, and would not suggest anyone buy one. They're not UL rated and I don't think they're up to the task of even charging at 24A. My first one started to melt down (casing literally melted), so I sent it back for replacement under warranty. The replacement failed even more spectacularly, and it started smoking. The inside had severely overheated and looked likely to have caught on fire if I hadn't been right there.

Keep in mind, you can always lower the amps via your tesla settings and the car will remember the setting for just that location. I plug into a 30 amp outlet but keep the max charging set to 20 amps. Just for my peace of mind.

 

[jcanoe]

I have a Neocharge to share a dryer with an EV, so can't comment on the 14-50 sharing specifically, but I've been impressed. It's UL rated, and seems well-constructed.

I've had two Dryer Buddies, and would not suggest anyone buy one. They're not UL rated and I don't think they're up to the task of even charging at 24A. My first one started to melt down (casing literally melted), so I sent it back for replacement under warranty. The replacement failed even more spectacularly, and it started smoking. The inside had severely overheated and looked likely to have caught on fire if I hadn't been right there. Fortunately I was dubious based on prior performance.


Was that Elektrek's photo, maybe? The official photos don't show anything like the one in that article. Yeah, you definitely want the UMCs supported. I gave mine a little shelf. Your (2) here is not accurate, though: NeoCharge has a bracket that anchors it to the receptacle housing. Once the bracket is installed it can't pull out of the receptacle and there shouldn't be any weight on blades. You should still support your UMC, though.

Good to know. The NeoCharge bracket is not visible in the photo so maybe it was not present for the photo shoot.

 

[user212_nr]

Lowering the onboard amps to 16 would be enough, actually 20 would be fine.

Getting an adapter that actually charges with 20a or less would be ideal, but somewhat expensive.

 

[TomServo]

NEMA 14-50 Y Splitter – EVSE Adapters

I bought this should I opt to use the UMC for my Tesla and the EVSE that came with the Volt it can be set for 8 or 12 amps). MAX amps = 40 so I'd have to reduce the charging rate on one of the cars to safely use this. But doable.

But for now I just us the Tesla J1772 adapter on our CC HCS-50P and charge one car at a time.

 

[frankvb]

NEMA 14-50 Y Splitter – EVSE Adapters

I bought this should I opt to use the UMC for my Tesla and the EVSE that came with the Volt it can be set for 8 or 12 amps). MAX amps = 40 so I'd have to reduce the charging rate on one of the cars to safely use this. But doable..

I briefly had one of those to hook up both the Tesla and Leaf chargers. It is good quality as far as I could tell.

However I decided against it as it's just not a good idea to add even more points to a 40A circuit that cause more resistive loss and even potentially cause a fire. I bought a Tesla to J1772 adapter, and use the Tesla charger for both vehicles now.