So...how much load does an EMS unit pull when NOT passing current through? I would think plugging in using an EMS, that won't let power pass to the rig until it's done it checks and A/C delay, could serve the same as having a circuit breaker off, since there would be minimal load applied at the beginning. Thoughts??? Scott
The EMS unit gives that protection when you plug it in, as there's a short delay while it analyzes the shore power before it activates its relay/contactor to connect the shore power to your RV load. But when you unplug it, the EMS has no advance warning that you're about to unplug it, so if your A/C is running or something else is drawing a large load, you'll still get that arcing when you unplug it. But if our goal is to reduce wear & tear on the pedestal hardware, sure, you can rely on your EMS protecting the plug & receptacle from arcing when you plug it in, and only shut off the breaker when you unplug it.
Actually, most 15/20-amp outlets in your house that are located near any grounded metal like a kitchen faucet are GFCI protected. But it’s certainly possible to get a shock while plugging an Edison plug into a non-GFCI outlet.
So...how much load does an EMS unit pull when NOT passing current through? I would think plugging in using an EMS, that won't let power pass to the rig until it's done it checks and A/C delay, could serve the same as having a circuit breaker off, since there would be minimal load applied at the beginning. Thoughts??? Scott
The EMS unit gives that protection when you plug it in, as there's a short delay while it analyzes the shore power before it activates its relay/contactor to connect the shore power to your RV load. But when you unplug it, the EMS has no advance warning that you're about to unplug it, so if your A/C is running or something else is drawing a large load, you'll still get that arcing when you unplug it. But if our goal is to reduce wear & tear on the pedestal hardware, sure, you can rely on your EMS protecting the plug & receptacle from arcing when you plug it in, and only shut off the breaker when you unplug it.
That’s also a good way to do it for hooking up. But remember, you’ll want to shut off internal RV loads before pulling the plug.
waiting on the answer to this as I have the same thoughts as Scott.
820707
I understand about turning breakers off for rv connections, but but every outlet in your house is always hot when plugging in. Is this safe?
Harry
Actually, most 15/20-amp outlets in your house that are located near any grounded metal like a kitchen faucet are GFCI protected. But it’s certainly possible to get a shock while plugging an Edison plug into a non-GFCI outlet.