Cyberbeast charging amperage changed to 48 amps

[cyberjeff25]

In the past I could only set the charging amp to 40. No issues. But it seems with the last update the charging amp max. Moved to 48 amps?

I have a RV panel with a 50,30 and 20 amp receptacle - with - breaker for each - never had a problem charging at 40 amps but usually at the charge level to 35 amps.

Last night it seems the charge rate was set to 48 amps- and the 50 amp breaker blew but the bus inside actually melted before the breaker blew.

This RV panel can’t handle a sustained 48 amp draw without the bus where the breakers are inserted actually melted.

This is using the Tesla charger received with the truck.

I guess an rv panel usually experiences a 48 amp draw to start the A/C units and once the compressor is running the amp draw pulls back a lot. But a Tesla charger draws 48 amps - maybe more- constantly.

I don’t recall a selection for 48 amp charging- I am using the plug in Tesla charger with a 50 amp plug on the unit.

Even most of the 50 amp receptacles are not rated for over than 50 amps - for real - guys replacing their dryer receptacles should beware as Home Depot does not even sell a 50 amp receptacle that is rated for any higher amp draw - requires going to a Amazon.

Make sure your receptacle is rated for a lot more than 50 amps.

Also if you are ever at a RV park and using your portable Tesla charger with the 50 amp plug you should set the amp charge rate way down below ;8 amps- maybe 30 amps is enough.

My installation uses number 4 wires which was large enough protect the wiring but the I assumed (wrongly) that a 48 amp draw from a 50 amp rv charge post - would have no issue charging at 48 amps. But the internal bus could not take a constant 48 amp draw

Solution was to buy the actual Wall mounted Tesla charger for $500 and have it installed directly to the number #4 220 volt and ground wires -

Moral of the story check what your charging amperage is set at in the truck and be careful not to set to 48 amps unless you have a true receptacle at 48 amps - which requires the correct breaker in your main panel - 60 amp breaker ideally- and #4 or larger wire and a receptacle rated for something more than 48 amps as the constant draw can create heat that a receptacle rated for only 48 amps cannot support- it will melt.

Best

Jeff

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[mongo]

In the past I could only set the charging amp to 40. No issues. But it seems with the last update the charging amp max. Moved to 48 amps?

I have a RV panel with a 50,30 and 20 amp receptacle - with - breaker for each - never had a problem charging at 40 amps but usually at the charge level to 35 amps.

Last night it seems the charge rate was set to 48 amps- and the 50 amp breaker blew but the bus inside actually melted before the breaker blew.

This RV panel can’t handle a sustained 48 amp draw without the bus where the breakers are inserted actually melted.

This is using the Tesla charger received with the truck.

I guess an rv panel usually experiences a 48 amp draw to start the A/C units and once the compressor is running the amp draw pulls back a lot. But a Tesla charger draws 48 amps - maybe more- constantly.

I don’t recall a selection for 48 amp charging- I am using the plug in Tesla charger with a 50 amp plug on the unit.

Even most of the 50 amp receptacles are not rated for over than 50 amps - for real - guys replacing their dryer receptacles should beware as Home Depot does not even sell a 50 amp receptacle that is rated for any higher amp draw - requires going to a Amazon.

Make sure your receptacle is rated for a lot more than 50 amps.

Also if you are ever at a RV park and using your portable Tesla charger with the 50 amp plug you should set the amp charge rate way down below ;8 amps- maybe 30 amps is enough.

My installation uses number 4 wires which was large enough protect the wiring but the I assumed (wrongly) that a 48 amp draw from a 50 amp rv charge post - would have no issue charging at 48 amps. But the internal bus could not take a constant 48 amp draw

Solution was to buy the actual Wall mounted Tesla charger for $500 and have it installed directly to the number #4 220 volt and ground wires -

Moral of the story check what your charging amperage is set at in the truck and be careful not to set to 48 amps unless you have a true receptacle at 48 amps - which requires the correct breaker in your main panel - 60 amp breaker ideally- and #4 or larger wire and a receptacle rated for something more than 48 amps as the constant draw can create heat that a receptacle rated for only 48 amps cannot support- it will melt.

Best

Jeff

The vehicle + Tesla mobile connector should never allow setting the current above 32A with the 14-50 adapter. 40A should not have been possible either. The mobile connector (or its 14-50 adapter) may be bad.

If that panel is the Connecticut Electric one, it is rated to 80A (I have the same one). It looks like a bad connection at the phase input.

 

[eswimm]

I still have one of the older mobile connectors that supports 40A charging (from my 2016 Model X). By the time I picked up a 2018 Model 3, the only mobile connector available were max 32A. No Tesla mobile connector released since supports anything greater than 32A regardless of the receptacle used.

What you described would represent a catastrophic failure of the mobile connector and would be something that needed to be investigated immediately and thoroughly. It is not something that could be contributed to user error.

I suspect the failure was in the panel.

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