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Old 05-17-2014, 09:59 PM   #1
Wise Elder
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2010 30' Classic
Vintage Kin Owner
South of the river , Minnesota
Join Date: Dec 2009
Posts: 4,020
New volt/amp meter for 120v

So I got one of these volt/amp meters from Amazon. Very inexpensive, under $20.

DROK 110V/220V 80V-300V/100A Digital AC Current Meter Volt Ammeter Gauge+Sense Transformer LED Dual Displayr Voltmeter Gauge+Current Sense transformer - Voltage Testers -

The trick is how to install it.

The photos tell most of the story. I have 50a service, and I put the current transformer around the neutral wire. It will read accurately when plugged into a 30a supply, which is really the only time I care about how many amps we're drawing.

I soldered longer leads onto the very short lead wires that came with the device.

It is important to realize that the current transformer leads must always be connected to the meter, or shorted together, if there is current flowing through the conductor that passes through the transformer. Dangerously high voltages will develop if this isn't done.

I'm not very good at metalworking but managed to cut a rectangular hole for the meter.
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Old 05-18-2014, 10:00 AM   #2
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2004 16' International CCD
Chicagoland , Illinois
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That's electrifying - A great mod. that I'm already planning to copy.
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