#Shelly EM For Dryer Usage

1 messages · Page 1 of 1 (latest)

broken palm
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It seems hard as hell to find reliable info for anyone in the U.S. for this. Nearly every video or article i read is for U.K. Electric Boxes.

Basically i am thinking of getting a shelly em or em gen3 to monitor dryer usage and from the one video i saw it said if you wire it at the breaker panel you have to install a seperate 220V breaker just for the shelly???? Then another video i see someone powering via 110volts.. The documentation by shelly is never clear and their U.S. documentation is even worse for this. Installing a separate breaker seems a bit overkill to monitor one 220volt circuit. And would i need 2 clamps for this or just one since it's only 120v per wire? Only intention is for the dryer so i can automate it, nothing more really.

Has anyone done anything close to this for a 220v appliance and can offer some reasoning for this insanity lol.

crisp swift
broken palm
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So i can do this at the breaker or at the appliance you mean? And it powers via 110 volt?

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was almost leaning to the breaker so it would be more secluded

crisp swift
broken palm
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So it seems to me it would make more sense installing one at a breaker box if it needs 220v

crisp swift
broken palm
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would you suggest installing a separate breaker for that though? i would think this thing would be fine piggy backing an existing one

crisp swift
broken palm
crisp swift
broken palm
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The EM gen 3 with the plug in CT that hooks on to the wire for the dryer

crisp swift
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ok so i think i am right in saying that what the US calls neutral is not what the rest of the world calls neutral

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the 2 wires that carry 220 to your dryer should be where you tap off the power

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for your setup. you should not be using the "I" and "O" connections they are for an optional relay which you are not using

crisp swift
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a little crude of a diagram but should give you an idea

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the L/N doesnt really matter which way around its connected because. the red is the clamp

broken palm
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You sure about the N lol? Being in the u.s. that's a mind fk not having that as neutral. So your saying this thing doesn't need grounded?

crisp swift
broken palm
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Lol "most of the world" sorry laughed at that

crisp swift
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most of the world dont have the centre tapped thing and just have what you would call leg 1 and leg 2

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and we call thoses legs live/neutral

broken palm
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Could only imagine an electrician from the u.s. moving to Europe..

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Fires etc

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Wish Shelly was more clear about this on their u.s. based site. The vid they show has a normal breaker box then running the Shelly in to one of their European boxes

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So L to one 120leg N to other 120leg and then the clamp.

crisp swift
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shelly do have a us based subsitiaery but most of the stuff comes out of Bulgeria

crisp swift
broken palm
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Well I tried checking their site but actually couldn't find a wiring diagram on the US version at all. But this simplifies it. Thanks for the info!

crisp swift
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if you were measuring 110 stuff then you would want to power it from 110 with a leg (same leg as the device being powered so its in phase) and the neutral but as your tracking 220 you want to power it from the same

broken palm
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In the US the dryer has 2 legs then Neutral ground "depending the age of the wire" tie together

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Makes sense

crisp swift
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US electrical systems are so strange to everyone else 😛

broken palm
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Just wanted to make sure before I burned the house down lol. Ironically I w rewired almost everything but the euro to u.s. always gets me

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Hey at least we have neutrals in the switch boxes :p

crisp swift
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for the most part, we do now too

broken palm
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Makes it so much easier

crisp swift
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in the UK its technically still optional but for the most part its done now because people want it. exceptions for when its a remote secondary switch and stuff

broken palm
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Luckily haven't had to run any neutral to the switches here. Biggest pain was running Ethernet. Which I need to redo. I should have run it in conduit down the walls like most suggest. My house has pearl lines in the walls so you can't straigh shoot a wire down. Good thing I do sheetrock

tall forum
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meaning if anything more than 2A goes to the EM it will fry, so behind a 16A breaker (i guess that's what the dryer breaker is) it's not secure

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i've installed mine behind its own breaker

crisp swift
# tall forum should not, spec says 2A breaker

the "2A" in the spec is for the optional output relay. some people use it for switching contactors or running a light or something.
the device will only pull what it needs. it doesn't magically pull more power because it can.

tall forum
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you're right, i was considering OP was using the relay

crisp swift